1,4-Dimesylate embodied in strained polycyclic systems 2,7,10 undergoes facile reductive CC bond cleavage to bridged eight membered rings 4, 8, 11 while the less strained 14 gives reduced product 15.
Palladium-mediated cycloaddition approach to cyclopentanoids. Introduction and initial studies
作者:Barry M. Trost、Dominic M. T. Chan
DOI:10.1021/ja00346a035
日期:1983.4
Carbon-carbon bond cleavage via carbon centred radical in strained tricyclo[5.2.1.02,6]decenes. A facile route to bridged eight membered rings related to taxanes
作者:Subrata Sarkar、Subrata Ghosh
DOI:10.1016/s0040-4020(01)80806-1
日期:1994.1
Tributyltin hydride reaction of the tricyclo[5.2.1.0(2,6)]decenes 5, 16 and 23 bearing a halo-carbonyl moiety has been shown to involve C-C bond cleavage as the major reaction path leading to bridged eight-membered rings 12, 17 and 24. In contrast the halo-carbonyl derivatives 8, 33 and 36 undergo only reduction of the carbon-halogen bond. The ring cleavage observed has been attributed to the release of strain arising from nonbonded interaction as well as strain associated with norbornene.