New Condensation Reactions of 4-Hydroxy-3-oxo-2,5-diphenyl-2,3-dihydrothiophene 1,1-Dioxide
4-Hydroxy-3-oxo-2,5-diphenyl-2,3-dihydrothiophene 1,1-dioxide (1) reacts with primary amines according to their basicity to give the compounds 6a-h, and 7, resp.; with hydrazines the monohydrazones (8a-d) are obtained.Condensation with aliphatic diamines
Ried, Walter,Bellinger, Oswald,Oremek, Gerhard
p. 750 - 755
(2007/10/02)
Cyclic esters of 3,4-dihydroxy-thiophene-1,1-dioxide compounds and 3,4-dihydroxy-cyclopentadienone compounds
Cyclic esters of 3,4-dihydroxy-thiophene-1,1-dioxide and of the corresponding cyclopentadienone compound, and their manufacture. The compounds can be used as "solid forms" of phosgene, thiophosgene or oxalyl chloride, or as acyl transfer agents.
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(2008/06/13)
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