Intramolecular carbopalladation of allylic amines and sulfides
作者:Robert A. Holton、Joseph R. Zoeller
DOI:10.1021/ja00293a049
日期:1985.4
Les amines et les sulfures de β-malonyl allyle se cyclisent en presence de tetrachloropalladate de lithium et d'une base pour donner des palladocycles bicycliques qui conduisent aux cyclopentanes par hydrogenation. On peut ainsi preparer une serie de cetones cycliques
Les amines et lessulfes de β-malonyl allyle se cyclisent en存在 de四氯钯酸盐锂 et d'une base pour donner des palladocycles bicycliques qui conduisent aux cyclopentanes par氢化。关于peut ainsi preparer une serie de cetones cycliques
Zirconium-Mediated S<sub>N</sub>2‘ Substitution of Allylic Ethers: Regio- and Stereospecific Formation of Protected Allylic Amines
作者:Gojko Lalic、Suzanne A. Blum、Robert G. Bergman
DOI:10.1021/ja056132f
日期:2005.12.1
A new zirconium-mediated, regio- and stereospecific SN2' substitution of allylic ethers with a nitrogen nucleophile has been developed. Cbz-protected amine products were isolated in high yield from reactions with a wide range of Z allylic ethers. A mechanism of the allylic substitution consistent with the results of the kinetics and kinetic isotope effect studies was proposed.
已经开发出一种新的锆介导的、区域和立体特异性的 SN2' 取代烯丙醚与氮亲核试剂。从与各种 Z 烯丙基醚的反应中以高产率分离出 Cbz 保护的胺产物。提出了与动力学和动力学同位素效应研究结果一致的烯丙基取代机制。
Scope and Mechanism of Formal S<sub>N</sub>2‘ Substitution Reactions of a Monomeric Imidozirconium Complex with Allylic Electrophiles
作者:Gojko Lalic、Jamin L. Krinsky、Robert G. Bergman
DOI:10.1021/ja7106096
日期:2008.4.1
bromides to give exclusively the products of the SN2' reaction; i.e., attack at the allylic position remote from the leaving group with migration of the doublebond. The primary amine products can be isolated in excellent yields, after in situ Cbz protection, in the presence of variety of functional groups. Good diastereoselectivity and complete stereoselectivity allowed the formation of enantioenriched
Catalytic S<sub>N</sub>2′-Selective Substitution of Allylic Chlorides With Arylboronic Esters
作者:Aaron M. Whittaker、Richard P. Rucker、Gojko Lalic
DOI:10.1021/ol101171v
日期:2010.7.16
A copper-catalyzed SN2′-selective arylation of allylicchlorides has been achieved using arylboronic esters as nucleophiles. Arylation products were obtained in high yield with a variety of allylicchlorides and arylboronic esters in the presence of a wide range of functional groups. A mechanism is proposed on the basis of the results of stoichiometric experiments and the isolation of the proposed
使用芳基硼酸酯作为亲核试剂,已经实现了铜催化的烯丙基氯化物的S N 2'选择性芳基化。在各种官能团存在的情况下,可以使用多种烯丙基氯化物和芳基硼酸酯以高收率获得丙烯酸化产物。根据化学计量的实验结果和所提出的中间体的分离,提出了一种机理。
Allene containing arachidonic acid derivatives
申请人:SYNTEX (U.S.A.) Inc.
公开号:US04515727A1
公开(公告)日:1985-05-07
Disclosed herein are novel allene-containing compounds of the formula ##STR1## wherein R is hydrogen, alkyl of 1 to 6 carbon atoms or a pharmaceutically acceptable salt; X is CH.dbd.CH, OCH.sub.2, CH.sub.2 O, CH.sub.2 S, SCH.sub.2, O or S; n is 1 or 2 but is 1 when X is CH.dbd.CH; m is 0-6; and the dotted lines represent a single or double bond. These compounds mediate leukotriene-caused physiological changes in mammals.