在检查 les raisons possibles de la non-additivite de取代 β-methyles 连续 sur les vitesses des 反应 d'elimination de sels d'铵 quaternaire。Marquage isotopique au deuterium et au tritium
zinc bromides and regioconvergent Negishi coupling with aryl or alkenyl triflates. The use of a suitable phosphine ligand favoring Pd migration enabled the selective formation of the linear cross‐coupling product. Subsequently, mixtures of secondary alkyl bromides were prepared from linear alkanes by standard bromination, and regioconvergent cross‐coupling then provided access to the corresponding linear
A Mechanistic Comparison between Cytochrome P450- and Chloroperoxidase-CatalyzedN-Dealkylation ofN,N-Dialkyl Anilines
作者:Mehul N. Bhakta、Kandatege Wimalasena
DOI:10.1002/ejoc.200500333
日期:2005.11
been shown to efficiently catalyze the oxidativeN-dealkylation of amines. The similar magnitudes of the kinetic isotope effects determined for P450- and CPO-catalyzed N-dealkylation of N,N-dimethylaniline have been used to propose that these reactions proceed through similar mechanisms. In this study, we have examined the mechanism of CPO-catalyzed N-dealkylation using a series of radical probes, 4-
[EN] DEUTERIUM-SUBSTITUTED OXADIAZOLES<br/>[FR] OXADIAZOLES SUBSTITUÉS PAR DU DEUTÉRIUM
申请人:AUSPEX PHARMACEUTICALS INC
公开号:WO2016164180A1
公开(公告)日:2016-10-13
Described are deuterated modulators of S1P1 receptors, pharmaceutical compositions thereof, and methods of use thereof.
描述了S1P1受体的氘代调节剂,其药物组合物以及使用方法。
Mechanisms of elimination reactions. 38. Why is the effect of successive .beta.-alkyl substitution on the rates of elimination from quaternary ammonium salts nonadditive?
作者:Shune Long Wu、Yu Tai Tao、William H. Saunders
DOI:10.1021/ja00336a045
日期:1984.11
On examine les raisons possibles de la non-additivite de substitutions β-methyles successives sur les vitesses des reactions d'elimination de sels d'ammonium quaternaire. Marquage isotopique au deuterium et au tritium
在检查 les raisons possibles de la non-additivite de取代 β-methyles 连续 sur les vitesses des 反应 d'elimination de sels d'铵 quaternaire。Marquage isotopique au deuterium et au tritium
Sterisch stabilisierte vinylnitroxide und radikalanionen von nitrosoalkenen: Hyperkonjugation in verdrillten π-radikalen—VI
作者:W. Ahrens、K. Wieser、A. Berndt
DOI:10.1016/0040-4020(75)80299-7
日期:1975.1
Alkylvinyl nitroxides with considerable delocalisation of the unpaired electron into the vinyl group are obtained for the first time by spin trapping using the unusually stable nitrosoalkene 1. Increase of the coupling constants of the protons at Cα with increasing steric hindrance in the radicals is explained by hyperconjugation in twisted π-radicals. The phenyl vinyl nitroxide 2e is shown to be twisted