The preparation of someMannichbases (3 a-f) andMannichbase hydrochlorides (2 a-f), resp., and numerous s-triazine derivatives (4 a-d, 5 a–m, 6 a–w, 7 a–e, 8 a–d, and9 a–l) based upon unsubstituted thiomorpholine (1 a) as well as C-mono-2-methylthiomorpholine (1 b) and 2-ethylthio-morpholine (1 c) and C-dialkylated thiomorpholines 2-methyl-3-ethylthiomorpholine (1 d) is
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