作者:Rolf Gleiter、Martin Merger
DOI:10.1055/s-1995-4025
日期:1995.8
The reaction of alkynes with trichloromethane/butyllithium in tetrahydrofuran at -78°C followed by hydrolysis yields 2-ynones and cyclopropenones. This has been demonstrated for dec-5-yne, cyclooctyne, cyclodeca-1,6-diyne, cyclododeca-1,7-diyne, and cyclotetradeca-1,8-diyne. Cyclooctyne yields cyclonon-2-ynone for the first time, which proves the aptitude of this method even for the synthesis of strained cyclic 2-ynones. With the cycloalkadiynes almost only monofunctional transformation to diynes and bicycloalkenynones was observed.
炔烃与三氯甲烷/丁基锂在-78°C 的四氢呋喃中反应,然后水解,可生成 2-炔酮和环丙烯酮。癸-5-炔、环辛炔、环十二-1,6-二炔、环十二-1,7-二炔和环十四-1,8-二炔都是如此。环辛炔首次生成了环-2-炔酮,这证明这种方法甚至适用于合成受约束的环状 2-炔酮。环烷二炔几乎只能单官能团转化为二炔和双环炔酮。