A simple catalytic method involving all‐metal aromatic frameworks as precatalysts ensures an efficient route to (Z)‐alkenes. Aromatic triangular palladium clusters were used to reduce internalalkynes without any trace of the formation of alkane side products. These trinuclear complexes provide a catalytic system that parallels the activity and selectivity of their best mononuclear peers, and the catalyst
Alkene Isomerization-Hydroarylation Tandem Catalysis: Indole C2-Alkylation with Aryl-Substituted Alkenes Leading to 1,1-Diarylalkanes
作者:Takeshi Yamakawa、Naohiko Yoshikai
DOI:10.1002/asia.201400135
日期:2014.5
with nonconjugated arylalkenes through a tandem alkene isomerization–hydroarylation process, affording 1,1‐diarylalkanes with exclusive regioselectivity. The feasibility of the tandem catalysis was demonstrated for allyl‐, homoallyl‐, and bishomoallylbenzene derivatives. The catalytic system is also applicable to a variety of β‐substituted styrene derivatives. Mechanistic experiments using deuterium‐labeled
Copper-catalyzed asymmetric allylic substitution with aryl and ethyl Grignard reagents
作者:Khalid B. Selim、Ken-ichi Yamada、Kiyoshi Tomioka
DOI:10.1039/b809140d
日期:——
Phenyl- and ethyl-magnesium bromides undergo regioselective asymmetricallylicsubstitution with high enantioselectivity under the catalysis of chiral amidophosphane-copper(I) complexes.
Controllable, Sequential, and Stereoselective C–H Allylic Alkylation of Alkenes
作者:Ling Qin、Mohammed Sharique、Uttam K. Tambar
DOI:10.1021/jacs.9b08801
日期:2019.10.30
new C-C bonds represents a powerful approach to generate complex molecules from simple starting materials. However, a general and controllable method for the sequential conversion of a methyl group into a fully substituted carbon center remains a challenge. We report a new method for the selective and sequential replacement of three C-H bonds at the allylicposition of propylene and other simple terminal
将 CH 键直接转化为新的 CC 键代表了一种从简单的起始材料生成复杂分子的强大方法。然而,将甲基顺序转化为完全取代的碳中心的通用且可控的方法仍然是一个挑战。我们报告了一种新方法,用于选择性和顺序替换丙烯和其他简单末端烯烃的烯丙基位置的三个 CH 键,该烯烃具有源自格氏试剂的不同碳基团。铜催化剂和富电子联芳膦配体有助于以高支链选择性形成烯丙基烷基化产物。我们还提出了在催化铜和手性膦配体存在下生成对映体富集的烯丙基烷基化产物的条件。通过这种方法,
CATALYSTS AND METHODS FOR FORMING ALKENYL AND ALKYL SUBSTITUTED ARENES
申请人:UNIVERSITY OF VIRGINIA PATENT FOUNDATION
公开号:US20180065116A1
公开(公告)日:2018-03-08
Embodiments of the present disclosure provide for Rh(I) catalysts, methods of making alkenyl substituted arenes (e.g., allyl arene, vinyl arene, and the like), methods of making alkyl substituted arenes, and the like.