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Tetrahedron Letters
Volume 45, Issue 43, 18 October 2004, Pages 8091-8093
Reductive alkylation of thioureas: a highly practical synthesis of unsymmetrical N,N′-disubstituted thioureas
Lech Ciszewski, a, , Daquiang Xua, Oljan Repiča and Thomas J. Blacklocka
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http://dx.doi.org/10.1016/j.tetlet.2004.08.182Preparation of N-Substituted Thiourea
V V Mozolis et al 1973 Russ. Chem. Rev. 42 587-595
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http://dx.doi.org/10.1070/RC1973v042n07ABEH002677