79099-23-3Relevant 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.
A Synthesis of the 2H-Benzothiocin System through Cycloaddition
Lamm, Bo,Aurell, Carl-Johan
, p. 197 - 200 (2007/10/02)
Thiochroman-3-one has been prepared from o-nitrophenylacetic acid.Cycloaddition of dimethyl acetylenedicarboxylate to the pyrrolidine enamine of thiochroman-3-one, followed by electrocyclic ring opening of the cyclobutene system in the tricyclic adduct, y
