Organic Reactions in Water: An Efficient Zinc-Mediated Stereoselective Synthesis of (<i>E</i>)- and (<i>Z</i>)-Trisubstituted Alkenes Using Unactivated Alkyl Halides
[reaction: see text] Treatment of the acetyl derivatives of the Baylis-Hillman adducts 3-hydroxy-2-methylene-alkanoates and 3-hydroxy-2-methylene-alkanenitriles with unactivated alkyl halides in the presence of Zn in saturated aqueous NH(4)Cl solution at room temperature afforded (2E)-2-substituted-alk-2-enoates in the first case and (2Z)-2-substituted-alk-2-enenitriles with high (Z)-selectivity in
Nickel-Catalyzed Asymmetric Intramolecular Reductive Heck Reaction of Unactivated Alkenes
作者:Feiyan Yang、Youxiang Jin、Chuan Wang
DOI:10.1021/acs.orglett.9b02577
日期:2019.9.6
An asymmetric Ni-catalyzed intramolecular reductiveHeckreaction of unactivated alkenes tethered to aryl bromides has been accomplished, providing a variety of benzene-fused cyclic compounds bearing a quaternary stereogenic center in good to excellent yields and high enantioselectivities. A mechanism has been proposed, which involves the enantiodetermining migratory insertion and the following protonation
[DE] ALKYLGLYCIDOLCARBONATE ALS CO-TENSIDE<br/>[EN] ALKYL GLYCIDOL CARBONATES USED AS CO-SURFACTANTS<br/>[FR] CARBONATES D'ALKYLGLYCIDOL EN TANT QUE CO-TENSIOACTIFS
申请人:BASF AG
公开号:WO2004031167A1
公开(公告)日:2004-04-15
Die vorliegende Erfindung betrifft neuartige Alkylglycidolcarbonate und deren Verwendung als Co-Tenside. Die Co-Tenside eignen sich für den Einsatz in Haushaltswaschmitteln, Haushaltsreinigern, Körperreinigungsmitteln und Körperpflegemitteln.
The present invention relates to novel alkylglycidol carbonates and to their use as cosurfactants. The cosurfactants are suitable for use in household detergents, household cleaners, body-cleansing compositions and body care compositions.