Triethylborane-Induced Radical Reaction of Alkynylgallium with<i>α</i>-Halo Carbonyl Compounds
作者:Shin-ichi Usugi、Hideki Yorimitsu、Hiroshi Shinokubo、Koichiro Oshima
DOI:10.1246/bcsj.75.2687
日期:2002.12
Treatment of terminal acetylenes with butyllithium, followed by an addition of gallium trichloride, afforded the corresponding alkynylgallium reagents. The reaction of the resulting alkynylgallium with α-halo carbonyl compounds in the presence of triethylborane as a radical initiator provided β,γ-acetylenic carbonyl compounds in good yields.
用丁基锂处理末端乙炔,然后加入三氯化镓,得到相应的炔基镓试剂。在作为自由基引发剂的三乙基硼烷存在下,所得炔基镓与α-卤代羰基化合物的反应以良好的产率提供了β,γ-炔羰基化合物。