[1,2]-Anionic Rearrangement of 2-Benzyloxypyridine and Related Pyridyl Ethers
作者:Jingyue Yang、Gregory B. Dudley
DOI:10.1021/jo901707x
日期:2009.10.16
An anionic rearrangement of 2-benzyloxypyridine is described. Pyridine-directed metalation of the benzylic carbon leads to 1,2-migration of pyridine via a postulated associative mechanism (addition/elimination). Several aryl pyridylcarbinols were obtained in high yields. A formal synthesis of carbinoxamine, an antihistamine drug used for the treatment of seasonal allergies and hay fever, emerges from
Homocoupling of benzyl pyridyl ethers <i>via</i> visible light-mediated deoxygenation
作者:Jingtian Chen、Fan Wang、Xiang Li、Lei Wang、Wei Yu、Keju Sun、Jingyue Yang
DOI:10.1039/d3cc03002d
日期:——
The photocatalytic coupling of ethers is uncommon because of the challenges in breaking C–O bonds and low selectivity. Herein, we report a visible light-mediated deoxygenation homocoupling of benzyl pyridyl ethers via their pyridium salts. This approach enables C(sp3)–O bondhomolysis under mild conditions. Mechanistic experiments support the radical nature of the reaction. This method is highly compatible