Nickel-Catalyzed Direct Coupling of Allylic Alcohols with Organoboron Reagents
作者:Gaonan Wang、Yi Gan、Yuanhong Liu
DOI:10.1002/cjoc.201800237
日期:2018.10
The direct coupling of allylicalcohols with arylboronic acids or their derivatives catalyzed by Ni(cod)2 in the presence of a catalytic amount of base has been developed. A wide variety of allylic substrates or arylboronic acids turned out to be applicable to this catalytic system. The present method does not require the use of ligands for stabilizing the nickel catalyst in most cases or additional
Palladium–catalyzed cross–coupling reactions of allylic alcohols and arylboronicacids in water are described. The reactions proceeded smoothly in water at reflux using catalytic amounts of [Pd(allyl)Cl]2 and PPh3. Addition of a catalytic amount of a base allowed the reaction to proceed even at lower temperatures.
A NEW ONE-POT CROSS COUPLING REACTION OF THE GRIGNARD REAGENTS AND ALLYL ALCOHOLS VIA 2-ALLYLOXYPYRIDINIUM SALTS
作者:Teruaki Mukaiyama、Masanori Imaoka、Toshio Izawa
DOI:10.1246/cl.1977.1257
日期:1977.11.5
A new one-pot cross coupling reaction of the Grignardreagents and allyl alcohols via 2-allyloxypyridinium salt was investigated. 2-Allyloxy-1-ethyl-4,6-dimethylpyridinium salts, prepared in situ from allyl alcohols and 1-ethyl-2-fluoro-4,6-dimethylpyridinium tetrafluoroborate, reacted easily with the Grignardreagents to afford the corresponding cross coupling products in good yield.
Stereospecific Allyl-Aryl Coupling Catalyzed by<i>in situ</i>Generated Palladium Nanoparticles in Water under Ambient Conditions
作者:Jingming Zhao、Jiang Ye、Yong Jian Zhang
DOI:10.1002/adsc.201200704
日期:2013.2.1
practical process for the stereospecific cross-coupling of secondary allylic carbonates with arylboronic acids has been developed. The reaction is catalyzed by in situ generated palladiumnanoparticles (PdNPs) without any ligands and additional stabilizers in waterunderambientconditions and furnishes the allyl–arylcoupling products in high isolated yields with high stereospecificities as well as excellent
Regio- and Enantiospecific Rhodium-Catalyzed Arylation of Unsymmetrical Fluorinated Acyclic Allylic Carbonates: Inversion of Absolute Configuration
作者:P. Andrew Evans、Daisuke Uraguchi
DOI:10.1021/ja035216q
日期:2003.6.1
important cross-coupling reaction for the construction of ternary carbon stereogenic centers. We have developed a new regio- and enantiospecific rhodium-catalyzed allylic alkylation of acyclic unsymmetrical chiral nonracemic allylic alcohol derivatives with aryl zinc bromides. This study demonstrates that the hydrotris(pyrazolyl)borate rhodium catalyst and zinc(II) halide salt are crucial for efficiency