Base catalysed rearrangements involving ylide intermediates. Part 6. The rearrangements of diallyl- and allyipropynyl-ammonium cations in protic media
作者:Trevor Laird、W. David Ollis、Ian O. Sutherland
DOI:10.1039/p19800001477
日期:——
aprotic solvents. The cations (15) undergo Hofmann elimination to the naphthalenic amines (12) or (13) and (14). The methiodide of amine (13g) shows a novel consequence, of restricted rotation. The n.m.r.spectrum of the methiodide shows that the two protons of the methylene group are diastereotopic.
Base catalysed rearrangements involving ylide intermediates. Part 1. The rearrangements of diallyl- and allylpropynyl-ammonium cations
作者:Robert W. Jemison、Trevor Laird、W. David Ollis、Ian O. Sutherland
DOI:10.1039/p19800001436
日期:——
The basecatalysedrearrangements of diallylammonium rations and allylpropynylammonium rations are described. In most cases, the major product arises by a symmetry-allowed [3,2] sigmatropic rearrangement of the intermediateylide. The minor products can be regarded as being derived by homolysis of the ylide into a radical pair followed by recombination.