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2004
Amination
O 0268
52- 042
Solvent-Free Synthesis of Chiral N,N'-Disubstituted Thioureas by "Just Mixing"
the Reagents. — The reaction of optically pure amines with carbon disulfide to yield
disubstituted thioureas is performed under microwave irradiation, under solvent-free
conditions and by using conventional heating in refluxing ethanol. Better yields
(81-98%) and shorter reaction times are registered with the two former eco-friendly
procedures. — (VAZQUEZ, J.; BERNES, S.; REYES, Y.; MOYA, M.; SHARMA, P.;
ALVAREZ, C.; GUTIERREZ*, R.; Synthesis 2004, 12, 1955-1958; Lab. Sint.
Compl., Fac. Cienc. Quim., Univ. Auton. Puebla, 72001 Puebla, Mex.; Eng.) —
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