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Preparation of [13C6]-ϵ-caprolactam and [13C6]-hexamethyleneimine

✍ Scribed by George J. Ellames; John M. Herbert

Publisher
John Wiley and Sons
Year
2001
Tongue
French
Weight
177 KB
Volume
44
Category
Article
ISSN
0022-2135

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✦ Synopsis

Abstract

An efficient route is described for the preparation of [^13^C~6~]‐ϵ‐caprolactam (1b), and thence to [^13^C~6~]‐hexamethyleneimine (2b) hydrochloride. The sequence, from [^13^C~6~]‐phenol, uses a rhodium‐catalysed hydrogenation to generate labelled cyclohexanol, and thence cyclohexanone, whose oxime was subjected to a Beckmann rearrangement to give 1a. Copyright © 2001 John Wiley & Sons, Ltd.

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