Fraser, Robert R.; Banville, Jacques; Akiyama, Fuminori, Canadian Journal of Chemistry, 1981, vol. 59, p. 705 - 709
作者:Fraser, Robert R.、Banville, Jacques、Akiyama, Fuminori、Chuaqui-Offermanns, Noemi
DOI:——
日期:——
BF<sub>3</sub>-Mediated Additions of Organolithiums to Ketimines: X-ray Crystal Structures of BF<sub>3</sub>−Ketimine Complexes
作者:Yun Ma、Emil Lobkovsky、David B. Collum
DOI:10.1021/jo0480895
日期:2005.3.1
Additions of lithium acetylides and n-BuLi to N-alkyl ketimines mediated by BF3-Et2O in THF afford hindered tert-alkylamines in moderate to good yields. Stereochemical results and crystal structures of three BF3-imine complexes suggest that allylic strain strongly influences conformation and may be an important determinant of reactivity and selectivity.
Determination of the conformations and relative configurations of exocyclic amines
The conformations and relative configurations of 20 amines, classified according to the following labeling scheme, were analyzed. Series a comprised compounds derived from N-(1-phenylethyl)cyclohexanamine, b comprised derivatives of N-[1-(naphthalen-2-yl)ethyl]cyclohexanamine, c comprised derivatives of N-(diphenylmethyl)cyclohexanamine, and d comprised derivatives of N-(propan-2-yl)cyclohexanamine.