Dialkyl peroxide, cross-linking composition containing the same, method for cross-linking, and electric power cable
申请人:NOF CORPORATION
公开号:EP0579434A1
公开(公告)日:1994-01-19
A novel dialkyl peroxide is disclosed which is represented by the formula:
wherein R₁ and R₂ independently stand for a hydrogen atom or a methyl group, R₃ stands for an alkyl group of 1 to 5 carbon atoms, X stands for an alkylene group of 1 to 3 carbon atoms, -C(O)-, -CH₂-(O-CH₂-CHR₄)m-OC(O)- [wherein R₄ stands for a hydrogen atom or a methyl group and m stands for an integer in the range of 0 to 10], or -C(O)-(O-CH₂-CHR₅)n-OC(O)- (wherein R₅ stands for a hydrogen atom or a methyl group and n stands for an integer in the range of 1 to 10). A composition for the production of a cross-linked ethylene type polymer comprises the dialkyl peroxide and an ethylene type polymer. An electric power cable excelling in electrical characteristics (AC breakdown strength) comprises a conductor and a resin layer deposited on the periphery of the conductor and formed of a cross-linked ethylene type polymer obtained by using the dialkyl peroxide as a cross-linking agent.
Solid pharmaceutical agent formulation for a piperazine urea derivative
申请人:Schering AG
公开号:US20030087913A1
公开(公告)日:2003-05-08
A solid pharmaceutical agent formulation that contains (2R)-1-((4-chloro-2-(ureido)phenoxy)methyl)carbonyl-2-methyl-4-(4-fluorobenzyl)piperazine or a salt thereof is described.
Asymmetric Formation of Quaternary Centers through Aza-Annulation of Chiral β-Enamino Amides with Acrylate Derivatives
作者:Petr Benovsky、Gregory A. Stephenson、John R. Stille
DOI:10.1021/ja9729591
日期:1998.3.1
active primary amine, either (R)-α-methylbenzylamine or α-amino esters, generated the corresponding optically active tetrasubstituted secondary enamine, in which the enamine tautomer was stabilized through conjugation with an amide carbonyl. Treatment of the intermediate enamine with acryloyl chloride, acrylic anhydride, or sodium acrylate/ethyl chloroformate resulted in aza-annulation to give the corresponding