Fused Quinolines, IV: 5,11-Dihydrobenzothienoquinolin-11-ones, S,S-Dioxides and Products of Thionation
The amides 3 cyclize on heating with polyphosphoric acid (PPA) to yield the title compounds 4, from which the S,S-dioxides 6 are obtained by reaction with H2O2.The synthesis of the thiones 12 and of the thioethers 13 is described.
Goerlitzer, Klaus,Weber, Josef
p. 76 - 84
(2007/10/02)
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