The mechanism of lithiation and nitrile insertion reactions of β-methylazines:: evidence from the structure of 3-C5H4NCH=C(Ph)N(H)C(Ph)=NLi.PMDETA

被引:20
作者
Ball, SC [1 ]
Davies, RP [1 ]
Raithby, PR [1 ]
Shields, GP [1 ]
Snaith, R [1 ]
机构
[1] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England
基金
英国工程与自然科学研究理事会;
关键词
lithium; reaction mechanisms; nitriles; X-ray structure;
D O I
10.1016/S0022-328X(97)00553-6
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A 1:1:1 reaction of 3-methylpyridine, 1, with LDA and PhCN in the presence of PMDETA gives the title complex 6, shown by X-ray crystallography to be the first monomeric iminolithium. The isolation of 6, and of a cyclised product 8 when a 3:10:3 reaction of 1:LDA:PhCN is carried out, suggest a mechanism for previously published cyclisation reactions of beta-methylazines. (C) 1998 Elsevier Science S.A.
引用
收藏
页码:457 / 461
页数:5
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