Cross-coupling of alcohols to value-added products by using sustainable catalytic reactions has gained attention in recent years. Isomerization of secondary allylic alcohol to the corresponding enolizable ketone is an atom economical and known transformation. Herein, a selective cross-coupling of secondary allylic alcohol and primary alcohol is reported to afford the corresponding α-alkenyl or alkylation
A convenientsynthesis of highly substituted, non-linear conjugated trienynes is described. Our strategy involves the reaction of readily available thiophosphates with sodium derivative of dienynes, in which new single and double carbon-carbon bonds are formed.
Direct Formation of Secondary and Tertiary Alkylzinc Bromides and Subsequent Cu(I)-Mediated Couplings
作者:Reuben D. Rieke、Mark V. Hanson、Jeffrey D. Brown、Q. Jason Niu
DOI:10.1021/jo952104b
日期:1996.1.1
Secondary and tertiary alkylzinc bromides can be generated from the direct oxidative addition of Rieke zinc to secondary and tertiary alkyl bromides in high yield. These organozinc reagents have been found to undergo copper-catalyzed conjugate addition, cross-coupling with acid chlorides, and carbocupration to activated alkynes.
Synthesis of Alkyl Aryl Ketones by Pd/Light Induced Carbonylative Cross-Coupling of Alkyl Iodides and Arylboronic Acids
作者:Shuhei Sumino、Takahito Ui、Ilhyong Ryu
DOI:10.1021/ol401363t
日期:2013.6.21
Alkylarylketones were synthesized by the carbonylative cross-coupling reaction of alkyl iodides and arylboronic acids under combined Pd/light conditions. In this reaction, it is likely that an acylpalladium species would be formed via carbonylation of the alkyl radical, which would then undergo transmetalation of an arylboronic acid to give the corresponding acyl(aryl)palladium species, ready to
Iridium-catalyzed selective α-methylation of ketones with methanol
作者:Shinji Ogawa、Yasushi Obora
DOI:10.1039/c3cc49626k
日期:——
Iridium-catalyzed selective α-dimethylation and α-methylation of ketones or phenylacetonitriles, using methanol as the methylating agent, were achieved.