Conversion of Alkylamines to Thiocarbamoylguanidines
摘要:
N-Alkyl-, N, N-dialkyl- or N-unsubstituted-N'-(arylthiocarbamoyl)guanidines are prepared in very good yield from amines and 1-(N-arylthiocarbamoyl)-amidino3, 5-dimethylpyrazoles.
1-(N-Arylthiocarbamoyl)amidino-3,5-dimethyl Pyrazoles-Preparation and Use in Heterocycle Synthesis
摘要:
On reaction with alpha-haloketones or hydrazine, 1-(N-arylthiocarbamoyl)amidino-3,5-dimethylpyrazoles (I) afford 2,4-diaminothiazoles and 3,5-diamino-1,2,4-triazoles in good yield. A convenient route to 1 is also reported.
An efficient protocol for solid phase aminothiazole synthesis
作者:Kumaran G. Sreejalekshmi、Satyabhama K.C. Devi、Kallikat N. Rajasekharan
DOI:10.1016/j.tetlet.2006.06.169
日期:2006.8
An efficient synthesis of 2,4-diamino-5-ketothiazoles under solidphase conditions has been achieved by the reaction of polymer supported amidinothioureas with α-haloketones. This novel synthetic approach involving traceless cleavage from the support is suited for automation, and allows solidphase combinatorial synthesis of 2,4-diamino-5-ketothiazoles in good yields and purities.