Question

Chemistry 2010 Practice Problems: 1. Name the following molecules: он ОН OH HO- HN HN NH2 Of 2. Draw the main organic product(s) for the following reactions.

please help with problems one through four

Answer 1

The names of the molecules are as follows: (a) OH 4-hydroxypentan-2-one The longest carbon chain is 5, so the name is pentane. One hydroxy group is present on carbon-4 and a ketone group is present on carbon-2 So the bnane of the molecule is 4-hydroxypentan-2-one (b) OH (E)-hex-4-ene-1,2-diol OH The longest carbon chain is 6, the name is hexane, but there is a double bond at carbon-4. Hence the prefix is hex-4-ene. There are two OH groups one at carbon-1 and the other at carbon-2. so the suffix is 1,2-diol. The name of the molecule is (E)-hex-4-ene-1,2-diol. (c) но 2,3-diamino-4-hydroxycyclohexanone H2N NH2 The longest carbon chain is 6 in cyclic, so the name is cyclohexane. A ketone group at carbon-1, so the suffix is cyclohexanone. One hydroxy group at carbon-4 and two amino groups at carbon-2 and carbon-3 So the name of the molecule is 2,3-diamino-4-hydroxycyclohexanone (d) HN 2-(methylamino)propanal The est carbon chain is 4, the Hence the suffix is proponal. propane.But there is greoup at carbon-1 methylamino group is present at carbon-2 Therefore, the name of the molecule is 2-(methylamino)propanal.