期刊
TETRAHEDRON
卷 58, 期 9, 页码 1739-1743出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4020(02)00033-9
关键词
N,N ',N ''-substituted guanidines; parallel synthesis; thioureas
A new facile solid-phase synthesis of N,N',N-substituted guanidines from an immobilised amine component is described. The resin-bound amine was reacted with di-(2-pyridyl)thionocarbonate to generate the isothiocyanate which was treated with aryl/alkyl amines to yield the corresponding resin-bound thiourea. Desulfurisation of the thiourea was readily achieved by treatment with triphenylphosphine dichloride, and further reaction with aryl/alkyl amines followed by acidic cleavage with trifluoroacetic acid yielded N,N',N-substituted guanidines of excellent purity and in good yield. (C) 2002 Elsevier Science Ltd. All rights reserved.
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