New Pyridothiazines and Pyrimidothiazines from 1-Methyl-1λ4,4-thiazine 1-Oxides and 1,3-Biselectrophiles
The aminothiazines 1a-d are easily acylated by 2-(1-methoxyethylidene)malononitrile (2) and ethyl N-cyanoacetimidate (5a).The intermediates 3a-d and 6a, b are converted into the bicyclic products 4a-d and 7a, b with sodium hydride.The N-cyanoimidates 5b-g
Ried, Walter,Kuhnt, Dietmar
p. 551 - 554
(2007/10/02)
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