Chapter 21, Problem 21.51SP

(a)

Interpretation Introduction

Interpretation:

The products that are formed on the reaction of phosgene with excess of propan $\text{-2-}$ ol are to be predicted.

Concept introduction:

Phosgene is an acid chloride of carbonic acid. The reaction of phosgene with an excess amount of an alcohol leads to the conversion of phosgene into an ester (dialkyl carbonate).

(b)

Interpretation Introduction

Interpretation:

The products that are formed on the reaction of phosgene with $1$ equivalent of methanol followed by $1$ equivalent of aniline are to be predicted.

Concept introduction:

Phosgene is an acid chloride of carbonic acid. The reaction of phosgene with an $1$ equivalent amount of an alcohol leads to the conversion of phosgene into an ester (alkyl carbonochloridate). The further reaction of alkyl carbonochloridate with an aniline yields alkyl phenyl carbamate.

(c)

Interpretation Introduction

Interpretation:

The synthesis of $tert\text{-}$ Butoxycarbonyl chloride with the use of phosgene is to be stated.

Concept introduction:

Phosgene is an acid chloride of carbonic acid. The reaction of phosgene with an $1$ equivalent amount of tertiary alcohol leads to the conversion of phosgene into tertiary alkoxycarbonylchloride.