A facile ring-opening reaction of cyclobutenes: application to a synthesis of vitamin D3
作者:Hideo Nemoto、Koji Suzuki、Masayoshi Tsubuki、Kayoko Minemura、Keiichiro Fukumoto、Tetsuji Kametani、Hiroko Furuyama
DOI:10.1016/s0040-4020(01)91875-7
日期:1983.1
The extraordinary accelerating effects of arylsulfinyl, arylsulfonyl, and diphenylphosphinoyl carbanion substituents for cyclobutene ring-opening reaction of bicyclo[4.2.0]-oct-l(6)-ene derivatives are described. The scope and limitation of this new type of reaction, and the application of the dienes so generated by this method for the synthesis of vitamin D3, are also discussed.
描述了芳基亚磺酰基,芳基磺酰基和二苯基膦酰基碳负离子取代基对双环[4.2.0]-辛-1-(6)-烯衍生物的环丁烯开环反应的非凡加速作用。还讨论了这种新型反应的范围和局限性,以及由此方法生成的二烯在合成维生素D 3中的应用。