作者:Ahmad Al-Dulayymi、Xiaoming Li、Markus Neuenschwander
DOI:10.1002/1522-2675(20000705)83:7<1633::aid-hlca1633>3.0.co;2-5
日期:2000.7.5
First synthetic attempts towards the so-far-unknown calicene (=5-(cycloprop-2-en-1-ylidene)cyclopenta-1,3-diene) precursors 3-(cyclopenta-2,4-dien-1-ylidene)tricyclo[3.2.2.22,4]nona-6,8-diene (4; Scheme 1), 1,4-di(cyclopenta-2,4-dien-1-ylidene)cyclohexa-2,5-diene (5; Scheme 2), and (2-bromocycloprop-1-en-1-yl)cyclopentadiene (6; X=Br; Scheme 5) are reported, which would represent very attractive compounds
对迄今为止未知的杯状烯 (=5-(cycloprop-2-en-1-ylidene)cyclopenta-1,3-diene) 前体 3-(cyclopenta-2,4-dien-1-ylidene) 的首次合成尝试三环[3.2.2.22,4]nona-6,8-diene (4; Scheme 1), 1,4-di(cyclopenta-2,4-dien-1-ylidene)cyclohexa-2,5-diene (5;方案 2) 和 (2-bromocycloprop-1-en-1-yl) 环戊二烯 (6; X=Br; 方案 5) 被报道,这将代表气相热解 (4)、基质光解 ( 5),以及溶液中的低温 HBr 消除 (5)。