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Generation and Trapping of Cyclopropenes from 2-Alkoxy-1,1-dichlorocyclopropanes

✍ Scribed by Paul Müller; Nicole Pautex

Publisher
John Wiley and Sons
Year
1991
Tongue
German
Weight
597 KB
Volume
74
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

In presence of crown ether, 2‐alkoxy‐1,1‐dichlorocyclopropanes react with t‐BuOK/THF preferentially via ring opening to 2‐chloroalk‐2‐en‐1‐ones and alkynones or to chlorocyclopropenes. The latter may be intercepted with 1,3‐diphenylisobenzofuran, but in the absence of trapping agent, the rearrangement to vinylcarbenes does not occur.

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