منابع مشابه
Enantioselective alpha-arylation of aldehydes via organo-SOMO catalysis. An ortho-selective arylation reaction based on an open-shell pathway.
The intramolecular alpha-arylation of aldehydes has been accomplished using singly occupied molecular orbital (SOMO) catalysis. Selective oxidation of chiral enamines (formed by the condensation of an aldehyde and a secondary amine catalyst) leads to the formation of a 3pi-electron radical species. These chiral SOMO-activated radical cations undergo enantioselective reaction with an array of pe...
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The addition of aryl groups to unactivated olefins represents a direct approach to C!C bond construction. Pd-catalyzed coupling of aryl halides with alkenes, the Heck reaction, offers a viable approach to arylation. However, terminal unactivated olefins often display low reactivity in Heck reactions and can yield mixtures of styrenes and allyl arenes owing to poor regiocontrol in the b-hydride ...
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Simply aqueous sodium hydroxide is sufficient to exclude ionic side reactions and to prepare 2-aminobiphenyls from aryl diazotates and anilines through a new variant of the Gomberg-Bachmann reaction (see scheme). The metal-free reaction under basic conditions allows to exploit the highly radical-stabilizing effect of the aniline's free amino function for the first time, which leads to a so far ...
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Silicon is one of the most promising anode materials for use in rechargeable lithium-ion batteries due to its high theoretical specific capacity of 4200 mAhg 1 and low cost. However, this high lithium storage capacity results in enormous volume expansion and contraction during electrochemical lithiation and delithiation, which can induce mechanical fracture and severe capacity fading. Recently,...
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A method that allows salicylaldehydes to be efficiently transformed into meta-arylated phenol derivatives through a cascade oxidation/arylation/protodecarboxylation sequence is presented. We demonstrate that the aldehyde functional group can be used as a convenient removable directing group to control site selectivity in C-H activation. Aldehydes are easily introduced into the starting material...
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ژورنال
عنوان ژورنال: Chemical Reviews
سال: 2018
ISSN: 0009-2665,1520-6890
DOI: 10.1021/acs.chemrev.8b00233