PROCESS FOR DOUBLE CARBONYLATION OF ALLYL ALCOHOLS TO CORRESPONDING DIESTERS
申请人:EVONIK DEGUSSA GMBH
公开号:US20170174610A1
公开(公告)日:2017-06-22
The invention relates to a process for doubly carbonylating allyl alcohols to the corresponding diesters, wherein a linear or branched allyl alcohol is reacted with a linear or branched alkanol (alcohol) with supply of CO and in the presence of a catalytic system composed of a palladium complex and at least one organic phosphorus ligand and in the presence of a hydrogen halide selected from HCl, HBr and HI.
Oxidation of cycloalkanones with hydrogen peroxide: an alternative route to the Baeyer–Villiger reaction. Synthesis of dicarboxylic acid esters
作者:Alexander O. Terent'ev、Maxim M. Platonov、Alexey S. Kashin、Gennady I. Nikishin
DOI:10.1016/j.tet.2008.06.027
日期:2008.8
C12 with hydrogen peroxide in alcohols was performed, and dicarboxylicacid esters were obtained as the major products in 53–70% yields. In the first step, geminal bishydroperoxides are generated from five-to-seven-membered cyclic ketones. The Baeyer–Villiger reaction is a side process accompanied by the formation of ω-hydroxycarboxylic acid esters.
Uridine derivative and process for preparing the same
申请人:TANABE SEIYAKU CO., LTD.
公开号:EP0588317A1
公开(公告)日:1994-03-23
A novel uridine derivative of the formula (I):
wherein R¹ is acyloxy, R² is hydrogen, acyloxy, etc., R³ is aralkyloxy, acyloxy, etc., R⁴ is hydrogen, acyloxy, etc., R is hydrogen or a lower alkyl, and Y is fluorine or trifluoromethyl, and a process for preparing the same are provided. The uridine derivative (I) of the present invention exhibits an excellent anti-tumor activity in vivo.
Selective monoetherification and monoesterificatton of diols and diacids under phase-transfer conditions
作者:Jaime de la Zerda、Gabriela Barak、Yoel Sasson
DOI:10.1016/0040-4020(89)80151-6
日期:1989.1
Research on the selectivity of etherlfication reactions of diols and esterification reactions of diacids by alkyl halides underphase-transfer catalysis has shown that under such conditions, selectivity of monoetherification increases in the order prim < sec < tert diols, though overall yield of monoether decreases from sec to tert diols. Monoesterification of diacids was accomplished with a high degree
PROCESS FOR DOUBLE CARBONYLATION OF ALLYL ETHERS TO CORRESPONDING DIESTERS
申请人:EVONIK DEGUSSA GMBH
公开号:US20170174609A1
公开(公告)日:2017-06-22
The invention relates to a process for doubly carbonylating allyl ethers to the corresponding diesters, wherein a linear or branched allyl ether is reacted with a linear or branched alkanol (alcohol) with supply of CO and in the presence of a catalytic system composed of a palladium complex and at least one organic phosphorus ligand and in the presence of a hydrogen halide selected from HCl, HBr and HI.