81549-11-3Relevant academic research and scientific papers
Enamino Ketones as Precursors of Functionalised 2H-Thiopyrans and Thiopyrano- and -benzothiopyrans
Gabbutt, Christopher D.,Hepworth, John D.,Heron, B. Mark
, p. 2603 - 2608 (2007/10/02)
Oxo enamino ketones obtained by treating active methylene compounds with N,N-dimethylformamide dimethyl acetal yield novel 2H-thiopyrans in a regioselective one pot thionation--cycloaddition sequence.Application of similar methodology to thiochroman-3-ones affords novel thiopyranobenzothiopyrans and the isomers.
The preparation of some thiochroman-3-ones and derivatives
Clark, Peter D.,McKinnon, David M.
, p. 243 - 248 (2007/10/02)
The use of 2,3-dihydrobenzothiophene-2,3-dione as a source of 2-mercaptophenylacetic acid permits a convenient preparation of 2-carboxymethylthiophenylacetic acid or derivatives.These undergo a Dieckmann cyclization to 3-acetoxybenzothiopyrans, which m
