Reductive Coupling between C–N and C–O Electrophiles
作者:Rong-De He、Chun-Ling Li、Qiu-Quan Pan、Peng Guo、Xue-Yuan Liu、Xing-Zhong Shu
DOI:10.1021/jacs.9b05224
日期:2019.8.14
The cross-electrophile reaction is a promising strategy for C-C bond formation. Recent studies have focused mainly on reactions with organic halides. Here we report a coupling reaction between C-N and C-O electrophiles that demonstrates the possibility of constructing a C-C bond via C-N and C-O cleavage. Several reactions between benzyl/aryl ammonium salts and vinyl/aryl C-O electrophiles have been
交叉亲电反应是 CC 键形成的一个有前景的策略。最近的研究主要集中在与有机卤化物的反应上。在这里,我们报告了 CN 和 CO 亲电试剂之间的偶联反应,证明了通过 CN 和 CO 裂解构建 CC 键的可能性。已经研究了苄基/芳基铵盐和乙烯基/芳基 CO 亲电试剂之间的几种反应。初步机理研究表明,苄基铵是通过自由基机制活化的。
Reactions of dichlorocarbene and tri-chloromethide with O-alkenyl esters and ethers, N-vinyl amides, and 1-haloalkenes
作者:R.C. De Selms、T.-W. Lin
DOI:10.1016/0040-4020(67)85101-9
日期:1967.1
mixtures due to apparent addition of trichloromethide and dichlorocarbene. In general, the yields of gem-dichlorocyclopropanes increased with increasing alkyl substituents on the alkene substrates. A trend toward increasing yield of gem-dichlorocyclopropanes was also noticed with the following substituents on the alkene substrates: OP(O) (OR)2 < Halogen ≅ OC(O)R < OR ≅ NRC(O)R′. Evidence is presented
Practical and User-Friendly Procedure for Michael Reactions of α-Nitroketones in Water
作者:J. Carlos Menéndez、Sonia Miranda、Pilar López-Alvarado、Giorgio Giorgi、Jean Rodriguez、Carmen Avendaño
DOI:10.1055/s-2003-42096
日期:——
A variety of α,β-unsaturated carbonyl derivatives gave selective Michael additions with several α-nitrocycloalkanones in water, at room temperature without any added catalyst, or in very dilute, aqueous solutions of potassium carbonate. Both preparative methods constitute new, environmentally benign and more efficient alternatives to previous procedures.
One-step synthesis of α,β-unsaturated ketones by the reaction of enol acetates with allyl methyl carbonate catalyzed by palladium and tin compounds
作者:Jiro Tsuji、Ichiro Minami、Isao Shimizu
DOI:10.1016/s0040-4039(00)94161-3
日期:1983.1
Enol acetates derived from saturated ketones are converted to α,β-unsaturated ketones by heating with allyl methyl carbonate in MeCN by bimetallic catalysis of palladium-phosphine complex and tin methoxide.
A method for the transformation of cyclic ketones to homologous α,β-unsaturated ketones
作者:G. Stork、M. Nussim、B. August
DOI:10.1016/s0040-4020(01)82174-8
日期:1966.1
The addition of dichlorocarbene to enol acetates of cyclicketones can be carried out efficiently in many cases using the neutral trihalomethyl phenyl mercury reagents. Since enol acetates of definite structures are readily prepared, the method provides a convenient first step to a ring enlargement sequence which can be carried out under basic conditions.