作者:Sofiya A. Runikhina、Oleg I. Afanasyev、Klim Biriukov、Dmitry S. Perekalin、Martin Klussmann、Denis Chusov
DOI:10.1002/chem.201904605
日期:2019.12.18
halides. The developed reductive alkylation reaction proceeds in the presence of the commercially available ruthenium catalyst [(cymene)RuCl2 ]2 (as low as 250 ppm) and carbon monoxide as the reducing agent. The reaction works well for a broad substrate scope, including aromatic and aliphatic aldehydes and ketones. It can be carried out without a solvent and often gives nearly quantitative yields of the
Ruthenium Phosphine–Pyridone Catalyzed Cross-Coupling of Alcohols To form α-Alkylated Ketones
作者:Apurba R. Sahoo、Gummidi Lalitha、V. Murugesh、Christian Bruneau、Gangavaram V. M. Sharma、Surisetti Suresh、Mathieu Achard
DOI:10.1021/acs.joc.7b02042
日期:2017.10.6
An efficient and green route to access diverse functionalized ketones via dehydrogenative–dehydrative cross-coupling of primary and secondary alcohols is demonstrated. Selective and tunable formation of ketones or alcohols is catalyzed by a recently developed proton responsive ruthenium phosphine–pyridone complex. Light alcohols such as ethanol could be used as alkylating agents in this methodology
Generation of metalloenamines by carbon–carbon bond formation: ring opening reactions of 2-methyleneaziridines with organometallic reagents
作者:Jerome F. Hayes、Michael Shipman、Heather Twin
DOI:10.1039/b005623p
日期:——
Ringopening of 2-methyleneaziridines with Grignard reagents in the presence of CuI yields metalloenamines in a regiospecific fashion which can be further reacted with electrophiles to produce functionalised ketones via a one-pot process.
在 CuI 存在下用格氏试剂开环 2-亚甲基氮丙啶以区域特异性方式产生金属烯胺,该金属烯胺可以进一步与亲电试剂反应,通过一锅法生产官能化酮。
Multicomponent Reactions Involving 2-Methyleneaziridines: Rapid Synthesis of 1,3-Disubstituted Propanones
作者:Jerome F. Hayes、Michael Shipman、Heather Twin
DOI:10.1021/jo016164v
日期:2002.2.1
metalloenamine (metalated imine) intermediate in a regiocontrolled manner. The sequential formation of two new intermolecular carbon-carbon bonds in this reaction provides a rapid entry into a variety of 1,3-disubstituted propan-2-ones, including 11 and 14-23. The scope and mechanism of this multicomponent reaction (MCR) has been assessed. It is established that this MCR tolerates alkyl, aryl, and benzylic Grignard
intermolecular hydroacylation reaction of alkenes with simple aldehydes has been developed. This reaction offers a new approach to the selective preparation of branched ketones in high yields (up to 99%) and branched selectivities (up to 99:1). Experimental data provide evidence for reversible formation of acyl-nickel-alkyl intermediate, and DFT calculations show that the aldehydeC-H bond transfer