Organophosphorus Compounds. Part 144: 1 A Novel Approach to 1,3-Oxaphospholes from Phosphaalkynes and Isomünchnones
作者:Sven G. Ruf、Uwe Bergsträßer、Manfred Regitz
DOI:10.1016/s0040-4020(99)00773-5
日期:2000.1
process to furnish the 1,3-oxaphospholes 14. In contrast to other cycloadditions to isomünchnones, the bicyclic intermediate 13 cannot be detected in these reactions. It is not necessary to use isolated isomünchnones 12 for the synthesis of the 1,3-oxaphospholes. The reaction sequence is also successful by use of the diazocarbonylcompounds 11 and in situ generation of the isomünchnones therefrom.