Process for preparing pyrazole functionalized benzodiazepinones
申请人:Harrington Peter J.
公开号:US20090203901A1
公开(公告)日:2009-08-13
The present invention provides innovative strategies for synthesizing pyrazole ring-functionalized benzodiazepinones. Alternative intermediates and high conversion strategies for forming alpha-aminobenzophenone intermediates involve a combination of aromatic acylation, displacement of electronegative leaving groups with amine, and then N-displacement strategies to produce the desired alpha-aminobenzophenone with primary amine functionality. Reaction strategies are then provided for converting alpha-aminobenzophenones to alpha-aminoamidobenzophenone intermediates with high yield and convenient reaction strategies. These alpha-aminoamidobenzophenone intermediates are then converted into benzodiazepinones. These benzodiazepinones are then converted to pyrazole ring functionalized benzodiazepinones through a series of innovative intermediates and/or reaction strategies.
Polyalkyldiallylamine-epihalohydrin resins as wet strength additives for papermaking and process for making the same
申请人:——
公开号:US20030166791A1
公开(公告)日:2003-09-04
The present invention relates to a process for making polyalkyldiallylamine-epihalohydrin resins, the resultant resins and their uses as wet strength additives for papermaking. These resins are obtained by a two step process, wherein the first step comprises the free radical polymerization or copolymerization of an alkyldiallylamine monomer in its protonated form; and the second step comprises reacting an ADAA polymer or copolymer with epihalohydrin under carefully controlled reaction conditions.