Alkylation of Heteroaromatic Bases with Diphenylselenium Diacyloxylate
作者:Hideo Togo、Nobukazu Miyagawa、Masataka Yokoyama
DOI:10.1246/cl.1992.1677
日期:1992.9
Heteroaromatic bases were alkylated with selenuranes, which were formed by the reaction of diphenylselenoxide and carboxylic anhydrides, under photoirradiation conditions. This reaction was presumed to proceed via a radical pathway accompanying decarboxylation.
The photochemical alkylation and reduction of heteroarenes
作者:T. McCallum、S. P. Pitre、M. Morin、J. C. Scaiano、L. Barriault
DOI:10.1039/c7sc03768f
日期:——
of transition-metal catalyzed processes that require initiators and stoichiometric oxidants. Herein, we describe the photochemical alkylation of quinolines, pyridines and phenanthridines, where through direct excitation of the protonated heterocycle, alcohols and ethers, such as methanol and THF, can serve as alkylating agents. We also report the discovery of a photochemical reduction of these heteroarenes
metal-free protocol for the synthesis of indenoquinolinones and 2-substituted quinolinesvia [4 + 2] cycloaddition reaction using readily available 2-aminobenzaldehydes and ketones as starting materials. Different quinoline derivatives can be selectively synthesized by changing the type of ketones. O2 and dimethyl sulfoxide (DMSO) as co-oxidants play an important role in the synthesis of indenoquinolinones