作者:Paul Müller、Nicole Pautex
DOI:10.1002/hlca.19910740108
日期:1991.1.30
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.
在冠醚的存在下,2-烷氧基-1,1-二氯环丙烷优选通过开环与t - BuOK / THF反应成2-氯烷基-2-烯-1-酮和炔酮或成氯环丙烯。后者可能被1,3-二苯基异苯并呋喃所拦截,但是在没有捕集剂的情况下,不会发生向乙烯基碳烯的重排。