The iodination and iodocyclisation of some alkenylmalonates
摘要:
Consecutive treatment of various allylmalonates with sodium hydride and iodine in THF affords cyclopropane derivatives via intermediate formation of iodomalonates; iodocyclisation under similar conditions affords cyclopentane and cyclohexane derivatives from appropriate alkenylmalonates.
A Convenient Tin-Free Procedure for Radical Carboazidation and Azidation
作者:Philippe Panchaud、Philippe Renaud
DOI:10.1021/jo0498720
日期:2004.4.1
The radical carboazidation of alkenes has been achieved in water with triethylborane as initiator. This efficient process is complete in 1 h at room temperature in an open system. These new tin-free carboazidation conditions are environmentally friendly and allow running reactions with an excess of either the alkene or the radical precursor. They are also suitable for simple radical azidation of alkyl