Organic Chemistry Answers

Compound for 4-amino-3-methyl-5-hydroxyhex-2-ene

Compound for 4-amino-5-hydroxy-3-methylhex-2-ene

Compound for 4-amino-3-methyl-2-hexen-4-ol

Which of the following amines is most soluble in water?

(1) CH3CH2NH2
(2) (CH3)3N
(3) PhNH2
(4) (CH3CH2CH2)2NH

Which of the following molecules is the weakest base?

(1) CH3CH2CH2CH2NH2
(2) CH3CH2NH2
(3) BrCH2CH2NH2
(4) NO2CH2NH2

structure for 2-bromopent-3-yn-2-one

structure for 2-bromopent-3-ynal

structure for 4-bromopent-2-yn-1-al

Aldehydes are more reactive than ketones in nucleophilic addition reactions because:

(1) The carbonyl group is planar in ketones and not in aldehydes
(2) The carbonyl group in aldehydes is not reactive towards electrophiles
(3) Aldehydes are less sterically hindered than ketones
(4) The carbonyl group in aldehydes is a chiral centre

Which of the following synthesis steps can be used to prepare 2-hexanone using 1hexyne as starting material?

(1) Reaction with CH3MgBr, followed by reaction with CO2
(2) Ozonolysis, folloed by the reaction with (CH3)2S (3) Reaction with Hg2+, H2SO4, H2O
(4) Hydrogenation in the presence of Ni, follwoed by oxidation with Na2Cr2O7, H2SO4