Palladium-Catalyzed Triple Cyclization of 2,7-Alkadiynylic Carbonates with Allenes Bearing a Carbon Nucleophile
作者:Xin Huang、Wangteng Wu、Chunling Fu、Yihua Yu、Shengming Ma
DOI:10.1002/chem.201503278
日期:2015.10.26
Palladium‐catalyzed tandem reactions of 2,7‐alkadiynylic carbonates with allenes bearing a carbon nucleophile such as malonate and bis(phenylsulfonyl)methane for the efficient syntheses of fused tricycles, such as 3,5,6,7‐tetrahydro‐1H‐indeno[5,6‐c]furan, 1,2,3,5,6,7‐hexahydrocyclopenta[f]isoindole, and 1,2,3,5,6,7‐hexahydro‐s‐indacene derivatives, have been reported. The reaction forms two five‐membered
钯催化的2,7-烷二炔碳酸酯与带有碳亲核试剂的丙二烯(如丙二酸酯和双(苯磺酰基)甲烷)的串联反应,可有效合成稠合的三环化合物,如3,5,6,7-四氢-1H-茚并[5,6- ç ]呋喃,1,2,3,5,6,7-六氢环戊[ ˚F ]异吲哚,和1,2,3,5,6,7-六氢- s ^ -indacene衍生物,已报道。反应在中间形成两个五元环和一个苯环。