involves no molecular rearrangement, and which is also stereospecific, for the preparation of alkyl-aryl ethers and thioethers is described. Stable alkoxyphosphonium salts, R-O-P(NMe2)3 PF6-, have been prepared and treated with phenols and thiophenols, under basic conditions, to yield the corresponding alkyl-aryl ethers and thioethers respectively.
Iridium-Catalyzed, Intermolecular Hydroetherification of Unactivated Aliphatic Alkenes with Phenols
作者:Christo S. Sevov、John F. Hartwig
DOI:10.1021/ja4052153
日期:2013.6.26
Metal-catalyzed addition of an O-H bond to an alkene is a desirable process because it allows for rapid access to ethers from abundant starting materials without the formation of waste, without rearrangements, and with the possibility to control the stereoselectivity. We report the intermolecular,, metal-catalyzed addition of phenols to unactivated alpha-olefins. Mechanistic studies of this rare catalytic reaction revealed a dynamic mixture of resting states that undergo O-H bond oxidative addition and subsequent olefin insertion to form ether products.
Downie,I.M. et al., Angewandte Chemie, 1975, vol. 87, p. 357 - 358
作者:Downie,I.M. et al.
DOI:——
日期:——
DOWNIE, IAN M.;HEANEY, HARRY;KEMP, GRAHAM, TETRAHEDRON, 44,(1988) N 9, 2619-2624