Archiv der Pharmazie p. 76 - 84 (1981)
Update date:2022-08-03
Topics:
Goerlitzer, Klaus
Weber, Josef
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.
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Doi:10.1016/S0040-4039(00)92271-8
(1991)Doi:10.1055/s-1981-29434
(1981)Doi:10.1039/c7tc05535h
(2018)Doi:10.1021/jo001281w
(2000)Doi:10.1007/BF00953587
(1981)Doi:10.1016/j.jorganchem.2015.05.047
(2015)
