Synthesis and Chemical Reactions of New Phosphono-phosphino Substituted g-Thiapyrones
作者:Richard Neidlein、Dirk Uwe Hahn、Walter Kramer、Claus Krieger
DOI:10.3987/com-97-s(n)9
日期:——
1,3-Dithietane-2,4-diylidenebis(cyanomethylphosphonates) and -phenylphosphinates (1/2) react with various substituted acetonitriles (3) to give phosphono-phosphino substituted gamma-thiapyrones (4/5). The constitution of one reaction product is confirmed by an X-ray crystal structure analysis (4.2 c). The gamma-thiapyrones are converted to boc-protected gamma-thiapyrones (6/7) and to gamma-pyrones (8/9) via oxidation.