Ultrasound in Organic Syntheses. XIX. Further Studies on the Conjugate Additions to Electron Deficient Olefins in Aqueous Media
摘要:
Alkyl halides add smoothly to a variety of olefinic bonds conjugated with electron withdrawing groups, in the presence of zinc-copper couple. Sonication enhances the efficiency of the process, which takes place in aqueous media following, most probably, a radical pathway.
Palladium-Bis(carbene) Catalysts for the Bisalkoxycarbonylation of Olefins to Succinic Diesters
作者:Yu Jin Cho、Yu Na Lim、Woojin Yoon、Hoseop Yun、Hye-Young Jang
DOI:10.1002/ejoc.201601546
日期:2017.2.17
Dimeric Pd–bis(NHC) (NHC = N‐heterocyclic carbene) catalysts promote the bisalkoxycarbonylation of olefins to afford a variety of succinicdiesters in good to modest yields.
Cobalt‐Catalyzed Electroreductive Alkylation of Unactivated Alkyl Chlorides with Conjugated Olefins
作者:Samir Al Zubaydi、Immaculata O. Onuigbo、Blaise L. Truesdell、Christo S. Sevov
DOI:10.1002/anie.202313830
日期:2024.1.2
A mild electrocatalytic system is reported for the reductive alkylation of primary, secondary, or tertiary alkyl chlorides with conjugated alkenes.
据报道,温和的电催化系统可用于伯、仲或叔烷基氯与共轭烯烃的还原烷基化。
Components and catalysts for the polymerization of olefins
申请人:——
公开号:US20020183575A1
公开(公告)日:2002-12-05
The present invention relates to a solid catalyst component for the polymerization of olefins CH
2
═CHR in which R is hydrogen or a hydrocarbon radical with 1-12 carbon atoms, comprising Mg, Ti, halogen and an electron donor selected from substituted succinates of a particular formula. Said catalyst components when used in the polymerization of olefins, and in particular of propylene, are capable to give polymers in high yields and with high isotactic index expressed in terms of high xylene insolubility.
本发明涉及一种用于烯烃聚合的固体催化剂组分 CH
2
═CHR,其中 R 为氢或含有 1-12 个碳原子的烃基,由 Mg、Ti、卤素和选自特定式的取代琥珀酸盐的电子供体组成。上述催化剂组分用于烯烃,特别是丙烯的聚合时,能够产生高产率和高同素异形指数的聚合物,以高二甲苯不溶性表示。
Takata et al., Yakugaku Zasshi/Journal of the Pharmaceutical Society of Japan, 1955, vol. 74, p. 233;
作者:Takata et al.
DOI:——
日期:——
COMPONENTS AND CATALYSTS FOR THE POLYMERIZATION OF OLEFINS