Dirhodium(<scp>ii</scp>) tetraacetate catalysed reactions of diazo thioamides: isolation and cycloaddition of anhydro-4-hydroxy-1,3-thiazolium hydroxides (thioisomünchnones), an approach to analogues of dehydrogliotoxin
作者:Christopher J. Moody、Alexandra M. Z. Slawin、David Willows
DOI:10.1039/b305698h
日期:——
masked thiocarbonylylide undergoes 1,3-dipolarcycloaddition with N-methylmaleimide and maleic anhydride to give the exo-cycloadducts 10 and 11, characterised by X-ray crystallography. The thioisomünchnone 18, derived from diazo thioamide 17, is an extremely stable crystalline mesoionic system which can be characterised by X-ray crystallography but fails to undergo intramolecularcycloaddition. The