Stereoselective reduction of enaminones to syn γ-aminoalcohols
摘要:
One-pot reduction of enaminones to syn gamma-aminoalcohols can be efficiently performed by lithium borohydride in the presence of cerium chloride as Lewis acid. Selectivities are very good with respect to classical reduction method of these products. (C) 2002 Elsevier Science Ltd. All rights reserved.
Skita; Keil, Chemische Berichte, 1929, vol. 62, p. 1145
作者:Skita、Keil
DOI:——
日期:——
PROCESS FOR POLYMERISATION OF ETHYLENE
申请人:Saudi Basic Industries Corporation
公开号:EP2625210A1
公开(公告)日:2013-08-14
US9617355B2
申请人:——
公开号:US9617355B2
公开(公告)日:2017-04-11
[EN] PROCESS FOR POLYMERISATION OF ETHYLENE<br/>[FR] PROCÉDÉ DE POLYMÉRISATION DE L'ÉTHYLÈNE
申请人:SAUDI BASIC IND CORP
公开号:WO2012045426A1
公开(公告)日:2012-04-12
The present invention is directed to a process for the production of high density polyethylene by polymerisation of ethylene in the presence of a supported chromium oxide based catalyst which is modified with an organic compound comprising oxygen and a nitrogen atom which is selected from the group consisiting of saturated heterocyclic organic compounds with a five or six membered ring, amino esters and amino alcohols. Such organic compounds allow manufacturing of HDPE with increases molecular weight distribution and increased molecular weight.