Lewis Acid Catalyzed Electrophilic Aminomethyloxygenative Cyclization of Alkynols with <i>N</i>,<i>O</i>-Aminals
作者:Anrong Chen、Houjian Yu、Jiaqi Yan、Hanmin Huang
DOI:10.1021/acs.orglett.9b04630
日期:2020.1.17
Lewis acid enables the electrophilic carbooxygenative cyclization of alkynols with N,O-aminals. The new process proceeds efficiently under very mild conditions via a pathway that is opposite to classical carbo-metalation. These reactions exhibit broad substrate generality and functional group compatibility, leading to a wide variety of 5-8-membered oxacycles bearing diverse functional groups. The cyclization
Alcoholysis of Epoxides Catalyzed by Tetracyanoethylene and Dicyanoketene Acetals
作者:Yukio Masaki、Tsuyoshi Miura、Masahito Ochiai
DOI:10.1246/bcsj.69.195
日期:1996.1
A typical π-acid tetracyanoethylene and capto-dative olefin dicyanoketeneacetals were found to catalyze stereospecific alcoholysis of epoxides at the ambient temperature to 50 °C in good yields. Mildness and significant chemoselectivity of the catalysts were demonstrated by intactness of tetrahydropyranyl ether and ethylene acetal groups. A novel regioselectivity associated with anchimeric assistance
Novel Electrochemical Deoxygenation Reaction Using Diphenylphosphinates
作者:Kevin Lam、István E. Markó
DOI:10.1021/ol102714s
日期:2011.2.4
The electrochemical reduction of diphenylphosphinate esters leads smoothly and in high yields to the corresponding deoxygenated products. In comparison with the previously developed methodologies, the electrolysis could be performed at lower temperature and with a higher current density, resulting in a shorter reaction time.
Faure,R.; Descotes,G., Bulletin de la Societe Chimique de France, 1966, p. 1569 - 1575
作者:Faure,R.、Descotes,G.
DOI:——
日期:——
SHINTEMIROVA M. N.; MAMEDOV EH. A.; KARAEV S. F.; ASKEROV M. EH., AZERB. KIMJA ZH., AZERB. XIM. ZH., 1979, HO 6, 67-69
作者:SHINTEMIROVA M. N.、 MAMEDOV EH. A.、 KARAEV S. F.、 ASKEROV M. EH.