- AMINOMETHYLATION OF THIOUREA DERIVATIVES WITH N-METHYLENE-tert-BUTYLAMINE. II. N,N'- AND N,N,N'-SUBSTITUTED THIOUREAS
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Reactions of 1,3-disubstituted thioureas with N-methylene-tert-butylamine without solvent proceed by a reaction of the Mannich type with formation of 1-R1-3-R2-5-tert-butyl-3,4,5,6-tetrahydro-1,3,5-triazine-2-thiones and tert-butylamine; 1,1,3-trisubstituted thioureas do not react with N-methylene-tert-butylamine as a consequence of steric hindrance, caused by the N-tert-butyl group, for the formation of the key iminium salt.
- Kovalenko, A. L.,Tselinskii, I. V.
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p. 1728 - 1730
(2007/10/02)
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