Rousseau,D.; Taurins,A., Canadian Journal of Chemistry, 1977, vol. 55, p. 3736 - 3739
作者:Rousseau,D.、Taurins,A.
DOI:——
日期:——
US4006160A
申请人:——
公开号:US4006160A
公开(公告)日:1977-02-01
[EN] SOLID FORMS OF LUMACAFTOR, ITS SALTS AND PROCESSES THEREOF<br/>[FR] FORMES SOLIDES DE LUMACAFTOR ET DE SES SELS, ET PROCÉDÉS ASSOCIÉS
申请人:DR REDDY’S LABORATORIES LTD
公开号:WO2017175161A1
公开(公告)日:2017-10-12
Aspects of the present application relate to solid forms of Lumacaftor, its salts and processes thereof. Specific aspects of the present application relate to alternate processes for the preparation of Lumacaftor and intermediates thereof. Present application further relates to the solid forms of Lumacaftor and its salts.
Process for the synthesis of N-hydroxypyrroles, N-hydroxyimidazoles, and
申请人:University of Alabama
公开号:US04006160A1
公开(公告)日:1977-02-01
A process is described for the preparation of N-hydroxypyrrole-2-carbonitriles, N-hydroxyimidazole-2-carbonitriles, pyrrole-2-carbonitriles, and 3-substituted-2, 3-dihydro-2-pyrrolones by thermally decomposing 2-azidoheteroaromatic N-oxides. In the process a 2-azidoheteroaromatic N-oxide is heated in a suitable solvent for a period of time sufficient to bring the reaction to completion. Removal of the solvent by conventional methods gives the desired product. Which product is obtained is determined by the choice of solvents. In non-polar aprotic solvents, N-hydroxypyrrole-2-carbonitriles or N-hydroxyimidazole-2-carbonitriles are obtained. In nucleophilic solvents capable of undergoing Michael-type additions pyrrole-2-carbonitriles, imidazole-2-carbonitriles, and 3-substituted-2,3-dihydro-2-pyrrolone derivatives are obtained where a solvent molecule comprises the 3-substituent. These compounds are useful as anti-bacterials, e.g., against E. Coli.