PRE_LAB_8

13. In the reaction of an alkene with dichlorocarbene, the dichlorocarbene is the: Electrophile a. b. Lewis base c. Nucleophile d. Both, b and c

7. Enols react as a. Electrophiles.....alkenes b. Electrophiles....alkanes c. Nucleophiles...alkenes d. Nucleophiles...alkanes in the same way that 8. Acylation of enolate ions proceeds by a a. E1 b. E2 C. SN1 d. SN2 c. Anhydride d. Beta-ketoacid | 9. The following molecule would be classified as a a. Alpha-ketoamide b. Beta-aldobase do. mechanism. HO

All of the following can be classified as alkyl halides except; a. chloroform, an anesthetic b. methyl bromide, an insecticide c. styrene, the monomer used to make foam coffee cups d. CFC’s used as refrigerants

Draw and explain the reaction mechanism between: a. ethane and bromine water b. ethene and bromine water c. ethyne and bromine water

Can you help me answer this question that I found in my chem study guide?

include the IUPAC name and draw the structure of ALL organiccompounds present.

m-trifluoromethyltoluene 1. Draw the structure of organic compound. 2. Name and Draw the structures of all possible chemical (Electrophilic aromatic substitution) reactions of the compound namely; a. Halogenation (Chlorination or Bromination) b. Nitration c. Sulphonation d. Friedal Craft Alkylation e. Friedal Craft Acylation wwww

Confused on this organic chem question

14. Choose the reagents needed to create an alkene with a double bond between C3 and C4. a. Conc. H2SO4 OH b. 1) BH3 THF; 2) H2O2, NaOH c. HBr, ROOR d. HBr

Consider the structure of pent-2-ene, if it undergoes ozonolysis, which of the following final product is formed? a.Ethanal and Propanal  b.Ethanal and Propanone c.CO2 and Propanal d.Ethanal and CO2

1. Which carbonyl group of the given compound is most reactive for nucleophilic addition reaction? a. All have equal reactivity b. Carbonyl Group 1 c. Carbonyl Group 2 d. Carbonyl Group 2. An aldehyde commonly exhibits a nucleophilic addition type of reaction. When a nucleophile attacks a carbonyl carbon, what happens to the oxygen atom in the structure? Refer to the structure below. ~ a. Oxygen atom becomes more electronegative. b. Oxygen atom obtains a net negative charge. c. Oxygen atom transforms to an alkoxide group. d. Oxygen atom acts as the new electrophile. 3. Assign the trivial name of the structure below. a. Diphenylketone b. Benzyl phenylketone c. Diphenyl aldehyde d. Benzyl phenyl aldehyde

1) Give the major organic product of the following reaction. Don't forget stereochemistry in certain cases. 2) Assign the reaction as addition, elimination, substitution, or rearrangement. A. B. C. D. xx D D 1. H₂O/Hg(OAc)2 2. NaBH₂ Br₂ CCI (inert solvent) H₂/Pd/C HBr Type of Reaction: Type of Reaction: Type of Reaction: Type of Reaction:

4. Phenol can be prepared on industrial scale from which of the given starting material. A. Toluene B. Styrene C. Cumene D. Caprolactam

e) sec-butyl bromide • Question 2: Identify the nucleophile and leaving group and draw the products of each reaction. a. b. Br + + OCH₂CH3 NaOH d. Br + N3 + NaCN

multiple choice. explanation not needed.  1) The influencing nature of the substituent  in  electrophilic substitution reaction is a. Inductive effect b. thermodynamic effect c. resonance effect d. both a and c 2) Ethanol can be converted to chloroethane. What statement is correct a. Use HCl b. Use chloroform c. Use SOCl2 d. Use POCl3 3) A good protecting group should meet the following requirement (s) a. It should react with the reagent used in the reaction b. It should be cleaved during the reaction c. Both a and b d. It should be stable during the course of the reaction

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Consider the conversion of alkyl halide A to ether B. a.Classify the conversion of A to B as substitution, elimination, or addition. b.The reaction rate depends on the concentration of A only. Write the rate equation for the reaction, and explain why the reaction mechanism must involve more than one step. c.Heterolysis of the polar bond in A forms a resonance-stabilized intermediate. Draw all reasonable resonance structures for this intermediate.

17. Give IUPAC names for the following alkenes. a. XX b.

1. Cite some reactions in which formaldehyde behaves differently from other aldehydes. 2. Give some biological and medical applications of: a. formalin b. chloral c. urotropine

7) You want to synthesize 3-methyl-2-pentene from 2-chloro-3-methylpentane. Which reagent would you use? a. HCI, heat b. NH:(aq), 25°C c. CH:CO2NA, CH:CO2H, heat d. CH3CH2ONA, CH3CH2OH, heat e. CН:CH2ОН, heat

Identify the role/function of the indicated molecule in the reaction? 1. LIAIH, ether 2. Но NaN3 Br -NH2 a. Nucleophile b. Electrophile c. Base O d. Acid

Answer all questions please with as much detail as possible!

For each of the following alkenes, draw the structure of two different alkyl halides that yield the given alkene as the only product of dehydrohalogenation.

Which of the following molecules is antiaromatic? A. cyclopentadienyl anion B. cyclopentadiene C. cycloheptatrien D. Cyclopentadienyl cation E. cycloheptatrienyl cation

Which of the following reacts fastest in nucleophilic addition reaction? a. Acetic acid b. Ethanol c. Formaldehyde d. Benzaldehyde e. Acetone How can a water insoluble acid be converted into a water soluble compound? a. By reacting it with an alcohol. b. By reacting it with hydrochloric acid. c. By reacting it with nitric acid. d. None of the mentioned method. e. By reacting it with sodium bicarbonate

For alkylhalides, elimination reaction is much favored than substitution reaction when A. Temperature is relatively high. B. Temperature is relatively low. C. Base is relatively weak D. Pressure is relatively high.

1. An alkene reacts with water with an acid catalyst results into a formation of: A. Aldehyde B. Ketone C. Alcohol D. Ester   2. 3-Methylhexanal with K2Cr2O7 will yield: A. 3-Methyl-1-hexanol B. 3-Methylhexanoic acid C. 3-Methyl-1-hexanone D. 3-Methyl-1-hexanethiol   3. This is a reverse process of Hydration reaction: A. Oxidation reaction B. Reduction reaction C. Dehydration reaction D. Hydration reaction   4. Acetic acid reacts with a strong base forms: A. Salt B. Water C. Salt and Water D. No reaction   5. Ketones can be further oxidized with benedict's solution into: A. Alcohol B. Aldehyde C. Catalysts D. No reaction

What product results from the SN2 reaction between (R)-2-chloropentane and hydroxide? A. (R)-2-pentanol B. (S)-2-pentanol C. Both A and B D. 1-pentanol

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The reaction will produce which of the following results? A. Decolorization of a brown solution B. Production of a brown precipitate C. Acidification of a solution D. Production of fumes What property is expected in the organic product in the reaction? A.Solubility in alcohol is increased B.Polarity of the compound is decreased C.A cis-configuration is expected. D. The electrophile becomes a nucleophile. Which among the reactants is a reducing agent? A.Alkene B.MnO4, anion C.Water D. All of the Above

What is the expected product of the reaction scheme below?

4. Syn and anti addition can occur with alkenes. 1. Describe syn and anti addition. b. Give an example of syn addition to an alkene and explain why it is syn. c. Give an example of anti addition to an alkene and explain why it is anti. 5. The following reactions shows the dehydration of 2-methylcyclohexanol. Why is 1-methylcyclohexene the major product? X OH H3PO4 84% 16%