The reaction of 1,4,5-trisubstituted 1H-imidazole-3-oxides 1 with 2,2-bis(trifluoromethyl)ethene-1,1-dicarbonitrile (7, BTF) yielded the corresponding 1,3-dihydro-2H-imidazol-2-ones 10 and 2-(1,3-dihydro-2H-imidazol-2-ylidene)malononitriles 11, respectively, depending on the solvent used. In one example, a 1 : 1 complex, 12, of the 1H-imidazole 3-oxide and hexafluoroacetone hydrate was isolated as
Carboxylate Protection for the Synthesis of 4,5-Disubstituted 1-Methylimidazoles
作者:Gideon Shapiro、Berta Gomez-Lor
DOI:10.1021/jo00098a006
日期:1994.9
Using the carboxylate function as a readily removed blocking group for the a-position, a regioselective synthesis of diverse 4,5-disubstituted 1-methylimidazoles has been developed starting from 1-methyltribromoimidazole, 5.
Shapiro Gideon, Gomez-Lor Berta, J. Org. Chem, 59 (1994) N 19, S 5524-5526
作者:Shapiro Gideon, Gomez-Lor Berta
DOI:——
日期:——
KIKUGAWA Y.; COHEN L. A., CHEM. AND PHARM. BULL. <CPBT-AL>, 1976, 24, NO 12, 3205-3207
作者:KIKUGAWA Y.、 COHEN L. A.
DOI:——
日期:——
IMIDAZOLE DERIVATIVES USEFUL AS MODULATORS OF FAAH AND AS FAAH IMAGING AGENTS