Organophosphorus Compounds; 142: A Simple Approach to 1,2,4-Selena- and Telluradiphospholes from Phosphaalkynes and the Chalcogen Elements and a First Study of their Reactivity
Organophosphorus Compounds; 142: A Simple Approach to 1,2,4-Selena- and Telluradiphospholes from Phosphaalkynes and the Chalcogen Elements and a First Study of their Reactivity
A study of the reactivity of a tetraphosphadeltacyclene*
作者:Sven M. F. Asmus、Georg Seeber、Uwe Bergsträßer、Manfred Regitz
DOI:10.1002/hc.1061
日期:——
The selective deselenation of the recently described tetraphosphatetracycle 4a leads to the tetraphosphabishomoprismane 6 in high yield. Triethylphosphine is used as a deselenating reagent. A further example for a selective decomposition of 4a is performed by mesitylnitrile oxide (9), yielding the 1,2,4-oxazaphosphole 10. Bromine and iodine furnish tetracyclic rearrangement products 13a,b. Finally
Organophosphorus Compounds; 142: A Simple Approach to 1,2,4-Selena- and Telluradiphospholes from Phosphaalkynes and the Chalcogen Elements and a First Study of their Reactivity