✦ LIBER ✦

Non-phosgene synthesis of benzyl chloroformate (CbzCl)

✍ Scribed by Takumi Mizuno; Junko Takahashi; Akiya Ogawa

Book ID: 104252085
Publisher: Elsevier Science
Year: 2002
Tongue: French
Weight: 170 KB
Volume: 43
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(02)01834-8

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✦ Synopsis

A novel synthetic method for benzyl chloroformate (CbzCl) using carbon monoxide or carbonyl sulfide as a carbonyl source was established. Benzyl chloroformate was successfully synthesized by the chlorination using sulfuryl chloride of S-methyl O-benzyl carbonothioate, which was prepared by the carbonylation of benzyl alcohol with carbon monoxide and sulfur (or carbonyl sulfide) in the presence of DBU (1,8-diazabicyclo[5.4.0]undec-7-ene) followed by esterification using methyl iodide.

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