A free radical Mannich type reaction: selective α-CH aminomethylation of ethers by Ti(III)/t-BuOOH system under aqueous acidic conditions
作者:Angelo Clerici、Rosalba Cannella、Nadia Pastori、Walter Panzeri、Ombretta Porta
DOI:10.1016/j.tet.2006.04.014
日期:2006.6
tert-butylhydroperoxide, selectively abstracts an α-H atom from ethers. The resulting α-ethereal radicals add to the C-atom of methylene iminium salts, formed in situ under aqueous acidic conditions, leading to a one-pot aminomethylation of ethers at room temperature. The aminoalkylation of ethers is also considered and the role of the metal ion is discussed.