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Chemical reaction	Alkan
Alkene	Aromatic compounds
Organic compound	Catalysis
Amine	Chromatography
Organic synthesis	Alkyne
Functional groups	Stereochemistry
Elimination reaction	Haloalkane
Free-radical reaction	Organic acid anhydride
Aromaticity	Acyl halide
Enamine	Conjugated system
Enolate anion	Electrophilic aromatic substitution
Hydrocarbons	Aldehydes and ketones

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Recently Asked Organic Chemistry Questions

Expert help when you need it

Q1:INSTRUCTIONS NEED TO DO THE FOLLOWING: Identified functional groups with justification Mass (mass is 84 i think from the mass spectroscopy) Identified molecular ion Determined molecular formula just need these catergories and the calculation on how molecular formula was found./nRelative Intensity 100- 31 80- 20 0 10 20 30 40 50 m/z 60 70 80 Taklon/nAnalyst Date 102- 100 95 90 85- 80- 75- 70 65- 60 55 50 45 40 35 30+ 4000 3500 Administrator 483 Administrator Tuesday, February 06, 2024 2:45 PM 2883.98cm-1, 87.77% T 2964.99cm-1, 80.65% T 1741.98cm-1, 33.98%T 3000 2500 2000 cm-1 Sample 483 By Administrator Date Tuesday, February 06 2024 TI 1406.88cm-1, 75.98%T (=0 1500 PerkinElmer Spectrum Version 10.5.2 Tuesday, February 06, 2024 2:45 PM 1728.32cm-1, 31.97% T 958.77cm-1, 74.94%T 833.47cm-1, 78.99%T 1000 1151.04cm-1, 51.69% T 470.75cm-1, 65.42%T 450 PageSee Answer
Q2:7. For each of the following IR spectra determine if it is consistent with the structure of an alcohol, a ketone, an aldehyde, a carboxylic acid, a primary amine, a secondary amine, a primary amide, or a secondary amide. I. II. Transmittance F 100 90 80 70 4000 2-1870210 94 3000 MYCHRY Wavenumbers (cm) 10 2000 трот உங்கள் sopp 1-2-3 -1165 1000 ฟ seSee Answer
Q3:6. How can you distinguish between cyclohexanol and cyclohexanecarboxylic acid using IR spectroscopy? OH of OHSee Answer
Q4:5. Rank absorption of the indicated bonds in decreasing (highest to lowest) order of wavenumber. H₂ II A. B. C. D. E. < BUDE ||| > || > | | > || > ||| || > | > ||| ||| > | > || || > ||| > |See Answer
Q5:4. Which of the following wavenumber corresponds to the C-O double bond region on an IR spectrum? A. تب فن نے B. C. D. E. 1500-4000 cm-1 400-4000 cm-1 400-1500 cm-1 2100-2300 cm-1 1600-1850 cm-1See Answer
Q6:3. Which of the following information is primarily obtained from infrared spectroscopy? A. arrangement of carbon and hydrogen atoms in a compound molecular weight of a compound نيف نضع B. C. D. E. any conjugated π system present in a compound functional groups present in a compound all of theseSee Answer
Q7:1. Write mechanism of the reaction synthesis of Dibenzalacetone step by step.See Answer
Q8:6. Li₂ has electron. 02s 02s* ¹2p ¹2p о2р л р* П2р* 2p* Li₂+ () () 0 0 0 0 0 0 As a result of how the electrons fill the MO diagram, the bond order is meaning that the bond between Li and Li isbond. There is _unpaired electron.See Answer
Q9:1. The nitrosyl ion, NO+, has electrons. 02s 02s 2p 2p 02p 02p NO+ () () () () () () () () As a result of how the electrons fill the MO diagram, the bond order is meaning that the bond between the N and the O is a bond. There are unpaired electrons.See Answer
Q10:1. The nitrosyl ion, NO+, has electrons. 02s 02s 2p 2p 02p 02p NO+ () () () () () () () () As a result of how the electrons fill the MO diagram, the bond order is meaning that the bond between the N and the O is a bond. There are unpaired electrons.See Answer
Q11:14 12 10 8 6 4 20 pka1 pka2 V₁ + V₁ N -V₁ V₂ Volume of base added Figure 9.2: pH versus Volume of titrant plot for phosphoric acid pKa values, i.e. pka1, pKa2 and pKa3. The titration curve would be expected to show three corresponding steep rises. However, in practice only two sharp rises are detected. The shape of the expected pH versus Volume of titrant for the titration of phosphoric acid is shown in Figure 9.2. unpex This plot shows two endpoints V₁ and V₂. As before pKa values can be determined by reading the pH values at the volumes corresponding to half neutralisation. As shown in Figure 9.2, pkai is the pH of the solution at the volume and pKa2 is the pH of the solution at the volume V₁ + V2V₁(= V₁+V/₂). epede Calibra side of Take mark Swirl Rep NaO sults/nTable 2: Change in pH on addition of 0.1 M NaOH to 50 cm³ sample of 0.05 M H3PO4 pH Volume of NaOH PH added (cm³) Volume of NaOH added (cm³) 2.0 H-O 6.0 10-0 12.0 14 O 16-0 18-0 20.0 22.0 24-0 26.0 28-0 30-0 32.0 34.0 From graph: Equivalence point 1: Half-equivalence point 1: pka1: Kat (show calculation): 1.78 179 1.89 2.08 2.21 2.46 3.00 4.91 5.66 6.05 6.29 6.49 682 7.69 9.70 10.19 10.38 10-52 2.0 4.0 6.0 8.0 10.0 12-0 14.0 16.0 16.5 17.0 17.5 18.0 18.5 19.0 F1.5 20.0 20-5 21.0 1.79 2.39 2.25 pka2: Ka2 (show calculation): Equivalence point 2: Half-equivalence point 2: 2.32 2.5H 3.02 3.99 5.72 5.86 5.97 $6.04 6-11 6.18 6.22 6.29 6.35 6.39 6.46/nDATA SHEET Table 1: Change in pH on addition of 0.1 M NaOH to 50 cm³ sample of 0.1 M CH₂COOH Volume of NaOH pH added (cm3) e revoo oneloitt 501 Jor дел 2:0 за но 10.0 12.0 TH O льо en qmets PH 18.0 2010 22.0 26:0 30.0 32.0 From graph: Equivalence point: Half-equivalence point: рка: Ka (show calculation): 2 70 3 90 З'Но 3:66 383 3-98 bio наа h35 тва 483 5 io 5.36 10 31 10.59 10.H9 Volume of NaOH added (cm3) до во 10.0 10 IN.O JH.S 15.0 15:5 16.0 16.5 17.0 17:5 180 19.0 За 3:46 3.68 3:86 3.99 ня наб ная н:33 4.36 4-39 Н.Н3 Н.НЗ 4 50 H.SS 4.58 нь3See Answer
Q12: Test 4 – ORG II (Lecture 4 - ORGII / Module 4 - ORGII): 5 points 1. Please predict the products for each of the following SNAr reactions. (1 point = 0.1 points each reaction x 10): KI NH2NH2 SNa IZ 9 8 10 Cl 7 CH3ONa t 1 NO₂ 6 2 NO₂ 5 Okt 3 4 1. NaOH 2. H3O+ i-ProNa NH₂ 2. Predict all the theoretical products for the following reactions. If no products are expected, please say NO REACTION: (1 point): https://doi.org/10.1021/jo01087a005 (a) (0.2 points) CI CI 1. NaNH2, NH3 (liq.) 2. H3O+ (b) (0.2 points) CI 1. NaNH2, NH3 (liq.) 2. H3O+ (c) (0.2 points) CI .CI 1. NaNH2, NH3 (lig.) 2. H3O+ (d) (0.2 points) CI 1. NaNH2, NH3 (liq.) 2. H3O+ (e) (0.2 points) CI 1. NaNH2, NH3 (liq.) CI 2. H3O+ 3. Propose an efficient synthesis for the following transformation (1 point): Hint: the most efficient synthesis has 5 steps (each step 0.2 points) Answer: z NO₂ 4. For each compound below, predict the number of signals in the expected 13C NMR spectrum (1 point): (a) (0.25 points) NO₂ НО, (b) (0.5 points) HO (c) (0.25 points) 5. Predict all possible products for the following reactions: (1 point): (a) (0.2 points) F3C 0=6=0 (b) (0.2 points) NO₂ oro (c) (0.2 points) CI CI (d) (0.2 points) O₂N. NO₂ CN CI 1. NaOH, 350 °C (e) (0.2 points) Br 2. H3O+ 1. NaOH, 80 °C 2. H3O+ Br₂ (2 equivalents) FeBr3 NH3 NO₂ 1. NaNH2, NH3 (liq.) 2. H3O+See Answer
Q13:1) 40 points total with 8 points for each question: Sodium hydride has the same crystal structure as the table salt NaCl is shown in the figure with the positions of the ions in the cubic unit cell as the followings: Nat (0 0 0) (1/2 1/2 0) (1/2 0 1/2) (0 1/2 1/2) H- (0 1/2 0) (1/2 0 0) (0 0 1/2) (1/2 1/2 1/2). Chloride ion Sodium ion Approximate the Debye-Waller factor as 1, a) Calculate the squared structure factor |F(T)² at T =(hkl) in analytic form for neutron Bragg diffraction when common 'H is contained in the hydride. b) Repeat to get the analytic squared structure factor when ID is used to synthesize the hydride. c) Calculate the Bragg powder diffraction intensity mF(T)² at T =(111) and (200) for NaH and NaD. Pay attention to the multiplicity of the Bragg peaks. d) Take the diffraction patterns on page 10 of the Lecture 6, now take 30min to count each data point, what will be the peak counts at (111) and (200) for NaH and NaD and what will be their standard deviations? e) Similarly, estimate the background intensity with the error bar at (111) and (200), then give the peak intensity (peak value-background) of them with the error bar for NaH and NaD. Are the intensity ratio I(111)/(200) consistent with your theoretic values for the two materials?See Answer
Q14: 问题 12 分 HO What functional groups other than alkane/cycloalkane are present in the above molecule? (e.g. haloalkane, alcohol, alkene) Type the name of the functional group(s) in the given blanks, one group per blank. This molecule contains a(n) IUPAC name. 问题 25分 HO group, the The main chain will contain [选择] and the the suffix] The chain is numbered [] group gets priority in the carbons and the base alkane name will be ✓ will be added. 1/19 There is stereochemistry that must be included in the full IUPAC name. [选择] 问题 32 分 HO > What is the proper IUPAC name for the above compound. Please use proper spelling, formatting, spacing, and punctuation. Remember that the computer is very literal and incorrect formatting etc. will be marked as wrong. NO PARTIAL CREDIT. The IUPAC name is: [a1] 问题 43分 OCH 3 OH What functional groups other than alkane/cycloalkane are present in the above molecule? (e.g. haloalkane, alcohol, alkene) Type the name of the functional group(s) in the given blanks, one group per blank. This molecule contains group gets priority in the IUPAC name. 问题 55 分 and groups, the 2/19 OCH 3 OH The main chain will contain [] carbons and the base alkane name will be [选择] and the the suffix] will be added. The chain is numbered [] There is stereochemistry that must be included in the full IUPAC name. 问题62分 OCH 3 [选择] > OH What is the proper IUPAC name for the above compound. Please use proper spelling, formatting, spacing, and punctuation. Remember that the computer is very literal and incorrect formatting etc. will be marked as wrong. NO PARTIAL CREDIT. The IUPAC name is: [a1] 问题 73 分 OH 3/19 What functional groups other than alkane/cycloalkane are present in the above molecule? (e.g. haloalkane, alcohol, alkene) Type the name of the functional group(s) in the given blanks, one group per blank. This molecule contains group gets priority in the IUPAC name. 问题 85分 | | and groups, the OH The main chain will contain carbons and the base alkane name will be [选择] and the the suffix [] ▾ will be added. The chain is numbered [] There is stereochemistry that must be included in the full IUPAC name. [选择] 问题92分 OH What is the proper IUPAC name for the above compound. Please use proper spelling, formatting, spacing, and punctuation. Remember that the computer is very literal and incorrect formatting etc. will be marked as wrong. NO PARTIAL CREDIT. 4/19 The IUPAC name is: [a1] 问题 10 3 分 Br ОН ОН СІ What functional groups other than alkane/cycloalkane are present in the above molecule? (e.g. haloalkane, alcohol, alkene) Type the name of the functional group(s) in the given blanks, one group per blank. This molecule contains and group gets priority in the IUPAC name. 问题 115 分 Br groups, the OH OH CI carbons and the base alkane name will be and the the suffix] ▾ will be added. The main chain will contain ¥] [选择] The chain is numbered [] There is stereochemistry that must be included in the full IUPAC name. 问题 12 2 分 [选择] > 5/19See Answer
Q15: Test 5 - ORG II (Lecture 5 - ORGII / Module 5 - ORGII): 5 points 1. Please predict the products for each of the following reactions using benzophenone. (2 points = 0.1 points each reaction x 20): Hint: 8, 10, 14, 16 (Grignard); 9, 19 (Wittig); 12 (hydrazone then Wolf-Kishner); 15 (Baeyer- Villiger); 20 (Corey-Chaykovsky); 6, 17 (reduction); 4 (imine); 5, 11 (enamine); 1, 7 (ketal); 2 (thioketal); 13 (oxime); 18 (hydrazone); 3 (thioketal then reduction) Me2S- SCH₂ Ph3P-CH2 NH,NH, [H+], Dean-Stark NaBH4 HOCH2CH2OH [H+], Dean-Stark 19 20 20 1 HSCH2CH2CH2SH له 2 [H+] 1. HSCH2CH2SH, [H*]¸ 3 4 2. H2, Raney Ni CH36 MeOH 18 1. MgBr 17 2. H₂O 16 МСРВА 15 14 1. i-PrMgBr 13 12 11 10 7 CH3NH2 [H+], Dean-Stark (CH3)2NH [H+], Dean-Stark 1. LiAlH4 2. H₂O CH3OH [H+], Dean-Stark 2. H₂O 1. CH3MgBr NH [H+], Dean-Stark 2. H₂O NH₂OH [H+], Dean-Stark 1. NH2NH2, H3O* 2. КОН-Н2О 150°C 1. PhMgCl 2. H₂O PPh3 COOEt 1 2. Name each chemical reaction below (Grignard Reaction; Friedel-Crafts Acylation; Baeyer-Villiger Reaction; Wittig Reaction; Corey- Chaykovsky Epoxidation; Clemmensen or Wolf-Kishner Reduction): (1 point): (a) (0.2 points) DOI: 10.1021/acs.orglett.5b02851 from https://www.organic-chemistry.org/ EDG EDG HFIP, r.t., 2 h n: 1, 2, 3 Answer: (b) (0.2 points) DOI: 10.1021/ol050337b Me .OMe 2 M Ph P=CH₂R': Ph.P=CH R' N HCI OMe R 'N' .R' 2.1 eq. Buli (2.5 M in hex.) .R' + THF Me -78°C r.t., 20 h 2.2 eq. Br Ph₂P-CH₂R' THF, -15°C, 30 min Answer: (c) (0.2 points) DOI: 10.1002/1521-3773(20020315)41:6<1057::AID-ANIE1057>3.0.CO;2-H R 1.3 eq. PhMgCl + (2 M in THF) 1.3 eq. (-)sparteine toluene, -78°C, 24 h 0 R Ph OH Answer: (d) (0.2 points) DOI: 10.5012/jkcs.2002.46.5.479 R H 0.1 eq. BF3⚫OEt₂ 1 eq. MCPBA benzene, r.t., 1-3h R' R" R OH "R" n: 0,1 Answer: (e) (0.2 points) DOI: 10.1021/j00479260 0.2 eq. S + 2 eq. BnBr Ar Answer: 0.2 eq. BuчNHS04 2 eq. NaOH, r.t., 1-2 d MeCN/H₂O (9:1) Ar Ph Ar Ph 2 3. Complete synthetic transformations (0.2 each reaction x 10 = 2 points): H3CO Na2Cr2O7, H2SO4, H2O H-N→ OH CrO3Cl Ph3P conditions? + Me2S-CH2 PCC MgBr 1. 2. H₂O [H+] Dean-Stark Hint: cyclohexyl migration rate is similar to t-Bu (3° alkyl) 1) LiAlH 4 (excess) 2) H₂O BONUS Na2Cr2O7, H2SO4, H2O CI 3 -0 H 4. BONUS QUESTION: Propose chemical structure for C10H12O (1 point): FTIR: TRANSMITTANCEI%! LOD D 4000 3000 1H NMR: Hint: Sextet at 1.8 ppm. 2000 1500 1000 500 HAVENUMBERI -11 11 10 9 8 7 6 5 4 3 HSP-01-476 ppm N 1 4 13C NMR: Hint: 4 aromatic 13C signals (140 - 120 ppm) 200 180 160 140 120 100 80 CDS-04-618 ppm Answer: 60 60 40 20 SDBSWeb: https://sdbs.db.aist.go.jp (National Institute of Advanced Industrial Science and Technology, 1/22/2022)See Answer
Q16:complete the following reaction. SH ①CH 3 CH CH3 + Conc. ZnCl2, A OH CH3 C-CH3 + CH3 Conc. H₂SO кон B ethanol Ha D ⑦CH3 CH=CH2 + H₂O H*> E + Biz Fe Biz H F+G NaOHSee Answer
Q17: Lab 5 Post-Lab - Properties of CO2 and the Determination of NaHCO3 (2pts) Determination of Carbon Dioxide How will you collect data for this experiment? virtually Mass of system before reaction (g) Mass of system after reaction (g) Temperature CO2(g) in °C Atmospheric pressure in lab (mmHg) Volume (mL) CO₂(g) Data 95-740 95.500 25.0 756 124.7 (7pts) Calculations Calculations Mass of CO2 gas (g) Volume of CO₂ (L) Density CO2 (g/L) Calculations (0/1pts) 1.State the theoretical density of CO2 (g/L) and then state the temperature and pressure of this value in the essay field below. Also, include the source of your value. 2.State the temperature and pressure of your theoretical density value, includind the source of your value 3.Calculate the percent error of your density. (8pts) Molar mass carbon dioxide Calculate the molar mass of CO2 using the ideal gas law and mass of CO2. Use the true gas constant, o.08206 L-atm/mol·K. To determine the vapor pressure of water, use this table. Molar mass of CO2 Calculations Vapor pressure of water in (mmHg) Partial pressure of CO2 (torr) Partial pressure of CO2 (atm) Temperature of CO2 (K) Moles of CO2 Experimental Molar mass CO2 (g/mol) Theoretical Molar mass CO2 (g/mol) Percent Error (6pts) Post-lab Questions (pending/2pts) 1. Describe how close your experimental values were to the actual values for density and molar mass. Saved (pending/2pts) 2. Explain two possible reasons for the differences between your values and the actual values. (pending/2pts) 3. If the percent errors were different for density and molar mass, give one possible reason for why one was closer than the other. Saved (10pts) Part 2 - Determination of the Purity of a Sodium Bicarbonate Sample Report (pending/10pts) Upload the group report here. It should include the following: Header information 1. 2. Problem being solved 3. Summary of the procedure 4. Detailed procedure 5. Data table for Part 2 (including units) 6. 7. 8. Statement of % Purity of the sample Discussion of your answer with evidence Answer to the neutralization reactionSee Answer
Q18: Instructions 1.I need mannich reaction from the article between (2020 to 2023) use in reaction chitosan as amine source + type of phenol + paraformaldehyde? 2. calculate how much ratio and mass i need? Article should be a strong article between (2020 to 2023)See Answer
Q19: Below is the chemical structure for a tuberculosis drug, Rifapentine. HO,, он OH OH J NH OH ° 3. RNA polymerase is a(n): a. Substrate b. Enzyme c. Product d. Mechanism 4. Describe the difference between bacteriostatic and bactericidal antibiotics. Below is national TB data from the CDC (https://www.cdc.gov/tb/statistics/reports/2022/state_local_data.htm): Washington 3.2 TB Incidence Rates* by Reporting Area, United States, 2022 1. Provide the total number of the following functional groups in this molecule: a. Alcohol b. Amine c. Ketone d. Carboxylic Acid e. Ether f. Ester The Campbell et al.¹ states, "Rifapentine is thought to inhibit bacterial DNA-dependent RNA polymerase, which appears to occur as a result of drug binding in the polymerase subunit deep within the DNA/RNA channel, facilitating direct blocking of the elongating RNA." 2. The excerpt above is an example of: a. Chemical Reaction Mechanism b. Bioavailability c. Mechanism of Action d. Metabolism California 4.7 Alaska 13.0 "Cases per 100,000 persons "Includes New York City Hawaii 7.0 Texas 3.7 New York 3.6' New Jersey 3.1 Maryland 2.5 Incidence rate <1.5 1.5-2.5 2.5-4.5 24.5 Campbell, Elizabeth A., et al. "Structural mechanism for rifampicin inhibition of bacterial RNA polymerase." Cell 104.6 (2001): 901-912. 5. What does incidence rate mean and why do we often use this metric as opposed to just number of cases? 6. The CDC also provides data for US territories (shown below). Explain how this data illustrates some of the TB inequities Dr. van de Water spoke about in her guest lecture: The TB incidence rates (cases per 100,000 persons) among the U.S. territories and freely associated states were: • Republic of the Marshall Islands, 252.1 • Federated States of Micronesia, 45.1 • Commonwealth of the Northern Mariana Islands, 44.7 • Republic of Palau, 38.8 • Guam, 34.9 Puerto Rico, 0.7 Data for American Samoa and the U.S. Virgin Islands are unavailable for 2022. One of the risks of taking isoniazid (TB antibiotic) is that it can act as a mild serotonin inhibitor, which has led isoniazid to be used as an antidepressant as well. If too much serotonin is inhibited, the patient may feel strong side effects (e.g., convulsions, fever, nausea, etc.). This inhibition is more likely if the patient eats food that trigger a histamine release. Thus, doctors usually tell patients on isoniazid to avoid foods like alcohol, bananas, tomatoes, chocolate, etc. 8. A reaction between isoniazid and histamine is shown in Q7 and below is the chemical structure of serotonin. Using this information, explain why the presence of histamine increases the likelihood of serotonin inhibition by isoniazid. NH2 N Isoniazid NH2 HN Histamine -NH2 -NH2 H₂N. NH₂ 7. Given the overall chemical reaction above, draw a plausible mechanism for this reaction. HO. Serotonin See Answer
Q20:3. Analyze the 1HNMR spectrum below. It is an ester obtained from the reaction between acetic acid and an alcohol. Draw the structure of the ester and alcohol (reactant) used in this reaction by investigating the signals as shown in the spectrum below. Explain which signal corresponds to specific hydrogens of the ester. 4. 2H, triplet 100- 3.37 3H, singlet 2H, sextet 7112 3.32 3H, tripletSee Answer

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