Thiomethylation of amino alcohols using formaldehyde and hydrogen sulfide
摘要:
Three-component condensations of formaldehyde with hydrogen sulfide and hydroxylamine or amino alcohols at a ratio of 3:2:1 give 47-73% of N-hydroxy(or hydroxyalkyl)-1,3,5-dithiazinanes. The reactions of CH2O with H2S and hydroxylamine or alpha-amino alcohols at a ratio of 4:3:1 involve both amino and hydroxy groups, leading to the corresponding dithiazinanes. 4-Aminobutan-1-ol reacts with CH2O and H2S under analogous conditions only at the amino group to form 4-(1,3,5-dithiazinan-5-yl)butan-1-ol.