Concerning the Reactivity of Unsubstituted and Alkyl Substituted Thiomorpholines, 5. On the Joint Action of Elementary Sulfur and Gaseous Ammonia on Ketones, 95

Article abstract of DOI:10.1007/BF00899678

The syntheses of 4-amino-thiomorpholine-1,1-dioxide (12) and 4-hydroxy-thiomorpholine-1,1-dioxide (11) from 1,4-thioxane-1,1-dioxide (1) by pressureless reaction of 1 with hydrazine hydrate and hydroxylamine, resp. is described.In analogy various other N-substituted thiomorpholine-1,1-dioxides are obtained with prim. amines (2-8) and diamines (9,10). 12 condensates with aldehydes (14-24) and ketones (25-29); reaction of 12 with 1 gives N,N'-dithiomorpholine-1,1-dioxide (13).Acylation of 12 with monochlorides (30-35), dichlorides of dicarboxylic acids (36-40) and carbo xylic acid anhydrides (41-43) proceeds smoothly.Compounds 38-43 are cyclic imides.Isocyanates give with 12 the expected compounds 45-48. 12 reacts with chlorinated 1,3,5-triazines to compounds which can be purified only with difficulty (49-51).Quaternization of the N-substituted thiomorpholine-1,1-dioxides with benzylbromide (52,53) and methyliodide (54,55) is possible.Ethylenbromide reacts with 9 to give the bis quaternization product 56.Further reactions of thiomorpholine-1,1-dioxide (57) with sulfuryl chloride (58), bromo cyanide (59), allylic chloride (60), chloro acetonitrile (61) and trityl chloride (62) are described. 11 reacts with carboxylic acid chlorides (63-65) and iso-cyanates (66-70) to yield the expected compounds.Propylene oxide gives with 12 the addition product 71; sulfur dioxide is added to 11 to thiomorpholine-1,1-dioxide sulfonic acid (72). - Keywords: 4-Aminothiomorpholine-1,1-dioxide; 4-Hydroxy-thiomorpholine-1,1-dioxide; Reactivity; Synthesis.