Evidence supporting two-electron nucleophilic displacement in reactions of unhindered alkyl bromides and iodides with boron and aluminum hydride reducing agents
Acceptor, donor, and captodative stabilization in transition states of 5-hexen-1-yl radical cyclizations
作者:Seung Un. Park、Sung Kee. Chung、Martin. Newcomb
DOI:10.1021/ja00262a009
日期:1986.1
Constantes de vitesse et parametres d'activation de la cyclisation des radicaux hexene-5yles et de leurs derives substitues en 6 par un groupe cyano, un groupe methoxy et un groupe cyano et un groupe methoxy
Constantes de vitesse et parametres d'activation de la cyclisation des radicaux hexene-5yles et de leurs衍生替代物 en 6 par un groupe cyano, un groupe methoxy et un groupe cyano et un groupe methoxy
Mechanistic studies on the base-promoted addition of lithiopinacolonate to several aromatic carbonyl compounds in nonhydroxylic solvents
作者:Carrie A. Palmer、Craig A. Ogle、Edward M. Arnett
DOI:10.1021/ja00040a022
日期:1992.7
An investigation of the reaction of lithium enolates with carbonyl compounds is continued by determining kinetic data for the aldol reaction of lithiopinacolonate with o- and p-methylbenzaldehyde in methylcyclohexane-d 14 at-80 o C using rapid injection proton NMR spectroscopy. The data were fit to a second-order reaction model with half-lives of 43.2 and 12.7 s, respectively. The NMR spectra as a
Evidence supporting two-electron nucleophilic displacement in reactions of unhindered alkyl bromides and iodides with boron and aluminum hydride reducing agents