A method for forming an imine comprises reacting a first reactant comprising a hydroxyl functionality, a carbonyl functionality, or both a hydroxyl functionality and a carbonyl functionality with a second reactant having an amine functionality in the presence of ordered porous manganese-based octahedral molecular sieves and an oxygen containing gas at a temperature and for a time sufficient for the imine to be produced.
An Effective Method To Prepare Imines from Aldehyde, Bromide/Epoxide, and Aqueous Ammonia
作者:Jing-Mei Huang、Jue-Fei Zhang、Yi Dong、Wen Gong
DOI:10.1021/jo102455q
日期:2011.5.6
three-component reaction of aldehydes, alkyl bromides, and ammonia to form imines was studied. Aqueous ammonia was applied as the nitrogen source and solvent in the reaction. For the aromatic aldehyde, the product yields are good to excellent and the reaction conditions are mild to be compatible with a range of functional groups. The reaction of aldehydes and aqueous ammonia with epoxides was also studied and
Chloride ion promoted nucleophilic pentafluorophenylation of imines
作者:Vitalij V. Levin、Alexander D. Dilman、Pavel A. Belyakov、Marina I. Struchkova、Vladimir A. Tartakovsky
DOI:10.1016/j.tetlet.2006.10.019
日期:2006.12
Nucleophilic addition of the pentafluorophenyl group from (C6F5)3SiF to non-activated imines affording α-C6F5-substituted secondary amines in high yield has been described. The reaction proceeds via simultaneous activation of imines and the silane reagent by means of a proton and chlorideion, respectively.
已经描述了将来自(C 6 F 5)3 SiF的五氟苯基亲核加成到未活化的亚胺上,从而以高收率提供α- C6 F 5取代的仲胺。通过分别借助于质子和氯离子同时活化亚胺和硅烷试剂来进行反应。
Synthesis of C<sub>6</sub>F<sub>5</sub>-Substituted Aminoethanols via Acetate Ion Mediated C<sub>6</sub>F<sub>5</sub>-Group Transfer Reaction
作者:Alexander D. Dilman、Vitalij V. Levin、Pavel A. Belyakov、Alexander A. Korlyukov、Marina I. Struchkova、Mikhail Y. Antipin、Vladimir A. Tartakovsky
DOI:10.1055/s-2006-926278
日期:——
A new approach for the synthesis of N-(pentafluorophenylmethyl)aminoethanols is developed. The method includes alkylation of imines with 2-tris(pentafluorophenyl)silyloxyethyl triflate, prepared from ethylene oxide and (C6F5)3SiOTf, to give 2-silyloxyethyliminium ions. Their treatment with sodium acetate induces C-C bond formation proceeding as transfer of the C6F5 group from the five-coordinate silicate intermediate to the iminium center.
作者:Carlos Kleber Z. Andrade、Neucírio R. Azevedo、Guilherme R. Oliveira
DOI:10.1055/s-2002-28504
日期:——
Allylation reactions promoted by niobium pentachloride are described. Allylstannanes were added to aromatic and aliphatic aldehydes and aromatic imines in good yields. Excellent syn diastereoselectivities were obtained inthe addition of (E)-cinnamyl-stannane to benzaldehyde (49:1) and in the addition of crotylstannane to N-benzylideneaniline (46:1).