The Wolff Rearrangement and 1,3-Dipolar Cycloaddition of 2-Diazo-3,4-bis(diphenylmethylene)cyclobutanone
作者:Kozaburo Ueda、Masanori Igaki、Fumio Toda
DOI:10.1246/bcsj.49.3173
日期:1976.11
The first example of the Wolff rearrangement of α-diazocyclobutanone, the title diazo ketone (2), into the three-membered cyclic ketene (4) was observed. The ketene intermediate (4) could be trapped by its reaction with alcohols, aniline, azobenzene, and N-benzylideneaniline to afford 1-alkoxycarbonyl- (5a–c) and 1-phenylcarbamoyl-2,3-bis(diphenylmethylene)cyclopropane (5e), and 1,2-bis(diphenylmethylene)-5
观察到 α-重氮环丁酮沃尔夫重排的第一个例子,标题重氮酮 (2),进入三元环烯酮 (4)。乙烯酮中间体 (4) 可以通过与醇、苯胺、偶氮苯和 N-亚苄基苯胺反应而被捕获,得到 1-烷氧基羰基-(5a-c) 和 1-苯基氨基甲酰基-2,3-双(二苯基亚甲基)环丙烷 (5e )、1,2-双(二苯基亚甲基)-5,6-二苯基-5,6-二氮杂-(9)和1,2-双(二苯基亚甲基)-5,6-二苯基-5-氮杂螺[2,3 ]hexan-4-one (10a),分别。与重排相反,2 直接与对苯醌和亚硝基苯反应,得到相应的 1,3-偶极环加合物(14 和 15)。