Rhodium(I)-Catalyzed Intramolecular Carbonylative [2+2+1] Cycloadditions and Cycloisomerizations of Bis(sulfonylallene)s
作者:Takamasa Kawamura、Fuyuhiko Inagaki、Syu Narita、Yasuhito Takahashi、Shuichi Hirata、Shinji Kitagaki、Chisato Mukai
DOI:10.1002/chem.200903568
日期:——
Novel [RhCl(CO)dppp}2]‐catalyzed intramolecular carbonylative [2+2+1] cycloadditions of bis(phenylsulfonylallene) derivatives under CO, leading to the facile formation of bis(phenylsulfonyl)bicyclo[n.3.0] frameworks (n=4–6), have been developed. The terminal double bonds of both allenyl moieties served exclusively as the two π‐components. In particular, this newly developed method was shown to be
新型[RhCl(CO)dppp} 2 ]催化双(苯基磺酰基烯丙基)衍生物在CO下的分子内羰基化[2 + 2 + 1]环加成反应,导致双(苯基磺酰基)双环[ n .3.0]骨架的容易形成(n = 4–6),已经开发出来。两个烯基部分的末端双键仅充当两个π成分。特别是,这种新开发的方法被证明是构建双环[6.3.0]十一碳二烯酮的有力工具,而已知的Pauson-Khand(-型)反应很难制备这种双环[6.3.0]十一碳二烯酮。双环[7.3.0] dodecadienone的同系物(多出一个碳)可以很低的产率形成。或者,在相同的Rh的催化下,双(苯基磺酰基烯丙基)衍生物的新型环异构化在N 2下,我络合物很容易产生3,4-二亚甲基-2,5-双(苯磺酰基)环壬烯以及相应的环辛烯和环庚烯骨架。