Oxyarylation and Aminoarylation of Styrenes Using Photoredox Catalysis
作者:Gabriele Fumagalli、Scott Boyd、Michael F. Greaney
DOI:10.1021/ol401940c
日期:2013.9.6
A three-component coupling of styrenes is reported, using photoredoxcatalysis to achieve simultaneous arylation and C–O or C–N bond formation across the styrene double bond.
Alkali metal adducts of benzophenone azine. II. The lithium adduct
作者:E. J. MacPherson、James G. Smith
DOI:10.1139/v70-314
日期:1970.6.15
The behavior of benzophenone azine towards lithium has been studied. Unlike sodium and potassium, lithium effected extensive reduction and cleavage of benzophenone azine; the reaction product being benzhydryl amine. By limiting the amount of lithium to 2 g-atoms per mole of azine, the reaction product was shown to be N-lithiobenzophenone imine on the basis of its chemical behavior.Two reasons are advanced
已经研究了二苯甲酮吖嗪对锂的行为。与钠和钾不同,锂对二苯甲酮吖嗪有广泛的还原和裂解作用。反应产物为二苯甲基胺。通过将锂的量限制为每摩尔吖嗪 2 g 原子,根据其化学行为,反应产物显示为 N-锂硫代二苯甲酮亚胺。提出了两个原因来解释锂的行为与钠或钾。一种解释依赖于与其他两种碱金属相比,锂的还原能力更强。另一种依赖于有机锂化合物通过形成多中心键而结合的趋势。
Dehydrogenative Coupling of Alcohols with Internal Alkynes under Nickel Catalysis: An Access to β-Deuterated Branched Ketones
alcohol is used as an acylating agent. This reaction system affords a wide range of α-branched aryl ketone derivatives with zero waste generationthrough the umpolung borrowing hydrogen strategy. Moreover, we have demonstrated the chemodivergent applications of the α-disubstituted ketones to other valuable building blocks, including large-scale synthesis of β-deuterated branched ketones. Several spectroscopic
A convenient and user-friendly method to yield benzamides from primary and secondary amines and various benzylic alcohols in the presence of a cheap iron salt (FeCl2 center dot 4H(2)O) and tert-butylhydroperoxide (70% in water) as a stoichiometric oxidant is described. Control experiments indicated that this reaction might involve radical species. This method proved to be general, generating a family of 30 benzamides and was applied to the preparative synthesis of anti-anxiety drug moclobemide. (C) 2014 Published by Elsevier Ltd.
Dey; Ramanathan, Proceedings of the National Institute of Sciences of India, 1943, vol. 9, p. 193,222