Stereoelectronic control in the base catalyzed hydrolysis of five-membered ring cyclic phosphonamidates
作者:Ji-Charng Yang、David G Gorenstein
DOI:10.1016/s0040-4039(01)91217-1
日期:1984.1
The base catalyzed hydrolysis of 2-phenyl-2-oxo-3-(2,6-dimethylphenyl)-1,3,2-oxazaphospholidine, 6, and 2-phenyl-2-oxo-3-(2,6-diisopropylphenyl)-1,3,2-oxazaphospholidine, 7, yields ring opened products involving 95% and 100% P-O cleavage, respectively.
One-Pot Synthesis of Unsymmetrical N-Heterocyclic Carbene Ligands from<i>N</i>-(2-Iodoethyl)arylamine Salts
作者:B. A. Bhanu Prasad、Scott R. Gilbertson
DOI:10.1021/ol901189m
日期:2009.8.20
approach that provides symmetrical, unsymmetrical, and asymmetric N-heterocyclic carbene (NHC) ligands is reported. Reaction of iodoethanol with aniline provides N-(2-iodoethyl)arylamine salts that are then converted to the corresponding iodide. Reaction with aliphatic or aromatic amines followed by triethyl orthoformate was used to provide 26 different NHC ligands.
[EN] SITE-SPECIFIC ISOTOPIC LABELING OF 1, 4-DIENE SYSTEMS<br/>[FR] MARQUAGE ISOTOPIQUE SPÉCIFIQUE DE SITE DE SYSTÈMES 1,4-DIÈNES
申请人:RETROTOPE INC
公开号:WO2017091279A1
公开(公告)日:2017-06-01
Methods for preparing isotopically modified 1,4-diene systems from non- isotopically modified 1,4-dienes involve selective oxidation of one or more bis-allylic position(s), or the preparation of isotopically modified 1,4-diene systems via trapping pi-allylic complexes with a source of deuterium or tritium. Such methods are useful for preparing isotopically modified polyunsaturated lipid including polyunsaturated fatty acids and polyunsaturated fatty acid derivatives.
N-substituted-4-(polyfluoro-2-hydroxy-2-propyl)anilines and compounds
申请人:Schering Corporation
公开号:US04267193A1
公开(公告)日:1981-05-12
N-substituted-4-(polyfluoro-2-hydroxy-2-propyl)anilines and compounds related thereto, useful as antihypertensive agents, are prepared by reaction of an N-substituted aniline with a polyfluoroacetone.
N-Substituted-4-(polyfluoro-2-hydroxy-2-propyl)anilines and compounds
申请人:Schering Corporation
公开号:US04322434A1
公开(公告)日:1982-03-30
N-substituted-4-(polyfluoro-2-hydroxy-2-propyl)anilines and compounds related thereto, useful as antihypertensive agents, are prepared by reaction of an N-substituted aniline with a polyfluoroacetone.