The generation of iminium ions using chlorosilanes and their reactions with electron rich aromatic heterocycles
作者:Harry Heaney、George Papageorgiou、Robert F. Wilkins
DOI:10.1016/s0040-4020(96)01174-x
日期:1997.2
have been used to generate iminiumions from aminals and aminol ethers derived from secondary alkylamines, including glycine derivatives, in aprotic media which were shown to undergo reactions with electron rich aromatic heterocycles, including furan, to give mono-aminoalkylation products in good yields. Whereas chlorotrimethylsilane has been shown to generate iminiumions from aminol ethers, no evidence
Die vorliegende Erfindung betrifft substituierte 2,5-Diaminomethyl-1 H-pyrrole, Verfahren zu deren Herstellung, Arzneimittel enthaltend diese Verbindungen sowie die Verwendung dieser Verbindungen zur Herstellung von Arzneimitteln.
The activation of aminals and aminol ethers by sulfur dioxide and their reactions with electron rich aromatic compounds
作者:Harry Heaney、George Papageorgiou、Robert F Wilkins
DOI:10.1016/s0040-4020(97)00848-x
日期:1997.9
Reactions of bis(dialkylamino)methanes and ethoxydialkylaminomethanes with nucleophilic aromatic heterocycles in the presence of sulfur dioxide result in the formation of the expected Mannich bases in good yields. Reactions of phenols are similarly activated by sulfur dioxide which lead to improved regioselectivity: in particular the reactions of 2,5-dimethylphenol result in the formation of 2-dialkylaminomethyl-3,6-dimethylphenol whereas reaction occurs at the 4-position using the classical procedures. (C) 1997 Elsevier Science Ltd.
EYLEY, STEPHEN C.;HEANEY, HARRY;PAPAGEORGIOU, GEORGE;WILKINS, ROBERT F., TETRAHEDRON LETT., 29,(1988) N 24, C. 2997-3000
作者:EYLEY, STEPHEN C.、HEANEY, HARRY、PAPAGEORGIOU, GEORGE、WILKINS, ROBERT F.