Tungsten and molybdenum 2-oxaallyl [.eta.1-(C)-enolate] complexes: functional group transformations, photochemical aldol reactions, and alkyne/carbon monoxide migratory insertion reactions
作者:Elizabeth R. Burkhardt、Jeffrey J. Doney、Robert G. Bergman、Clayton H. Heathcock
DOI:10.1021/ja00241a020
日期:1987.4
Preparation des complexes oxa-2alkyl (η 1 -enolate) par reaction de C 5 R 5 (CO) 3 M − Ne + avec les α-chloroesters, les cetones et les amides. Structures cristallines de certains complexes
C 5 R 5 (CO) 3 M - Ne + avec les α-氯酯、les cetones 和 les 酰胺的合成 oxa-2 烷基 (η 1 -烯醇化物) par 反应的制备。某些复合体的晶体结构
Stereoselective synthesis of α,β-unsaturated esters
作者:Marc Larchevêque、Alain Debal
DOI:10.1039/c39810000877
日期:——
Reaction of α-silylated ester magnesium enolates with aldehydes affords exclusively one diastereoisomer of the two possible β-hydroxy silanes which give pure E-unsaturated esters on acid work-up.
Brønsted‐Acid‐Catalyzed One‐Pot Synthesis of β,β‐Diaryl Esters: Direct Regioselective Approach to Diverse Arrays of 3‐Aryl‐1‐indanone Cores
作者:Pragya Sharma、Neha Taneja、Sanjay Singh、Chinmoy K. Hazra
DOI:10.1002/chem.202202956
日期:2023.1.9
Three-component, solvent-dependent, Brønsted-acid-catalyzed reaction of benzaldehydes, silyl enolates and arene nucleophiles has been developed for the synthesis of potential drug candidate 3-aryl-1-indanones. This reaction features the formation of three C−C bonds, high regioselectivity in a one-pot strategy, broad substrate generality, facile scalability, high functional group tolerance and viable
The Mukaiyama aldol reaction of silyl ketene acetals with aldehydes has been effected by using commercially available 4 angstrom molecular sieves (4 angstrom MS) as a promoter. Various silyl ketene acetals and silyl enol ethers have been shown to be effective nucleophiles for this reaction. For the first time, it has been found that 4 angstrom MS can promote the Mukaiyama Michael addition reactions of silyl ketene acetals to alpha,beta-enones.
Verfahren zur Abtrennung von Zinksalzen aus Zink-Alkoholaten oder Zink-Amiden enthaltenden nicht-wässrigen Syntheselösungen
申请人:Consortium für elektrochemische Industrie GmbH