A new type of dimroth rearrangement: formation of 1,2-dihydro-3H-quinazolone 4-oximes from 4-amino-1,2-dihydroquinazoline 3-oxides
作者:Dezs? Korbonits、P�l Kolonits
DOI:10.1039/p19860002163
日期:——
Contrary to earlier claims the primary product of the reaction of aldehydes and o-aminobenzamide oxime is, irrespective of the aldehyde, always a 4-amino-1,2-dihydroquinazoline 3-oxide. Thermolysis of 1-unsubstituted 2-substituted quinazoline 3-oxides (5) in solution or in melt gives rise, by a new type of Dimroth rearrangement, to the isomeric 1,2-dihydro-4-quinazolone oximes (6), while the 1-benzyl
Catalytic Reductive Synthesis and Direct Derivatization of Unprotected Aminoindoles, Aminopyrroles, and Iminoindolines
作者:Leonardus H. Leijendekker、Jens Weweler、Tobias M. Leuther、Jan Streuff
DOI:10.1002/anie.201702310
日期:2017.5.22
A titanium(III)-catalyzed radical cyclization to unprotected 3-aminoindoles, 3-aminopyrroles, or 3-iminoindolines is reported. The reaction is non-hazardous, scalable, and allows facile isolation of the free products by extraction. The method is demonstrated on a large substrate scope and it further allows the direct installation of various nitrogen protecting groups or the synthesis of building blocks
The reaction of imines with alkynes and alkenes, in the presence of 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ), to give quinoline derivatives is described. The mechanism of the annulation is discussed, and evidence supporting a non-concerted pathway, at least when the alkene is butyl vinyl ether, is reported. Preliminary information is also given about solid adducts of imines with DDQ, which do
Compositions comprising as active ingredients cyanobenzyl(idene)-aniline derivatives, the use of the compositions as plant growth regulants and a method for the preparation of the active ingredients
申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0001655A2
公开(公告)日:1979-05-02
Plant growth regulant compositions comprising as active ingredient a cyanobenzyl(idene) aniline derivative of the following general formula:-
wherein A and B either represent hydrogen atoms or jointly represent a C-N covalent bond, each of the substituents X which may be mutually the same or different individually represents a halogen atom, an optionally halogenated alkyl group, an alkoxy or alkanoyl group, or a nitro or carboxyl group and m and n each independently represent 0,1,2,3 or 4. The use of the compositions as plant growth regulants and method for the preparation of the active ingredients.
Polymers functionalized with imine compounds containing a cyano group
申请人:Bridgestone Corporation
公开号:US10590208B2
公开(公告)日:2020-03-17
A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomer to form a reactive polymer, and (ii) reacting the reactive polymer with an imine compound containing a cyano group.
一种制备功能化聚合物的方法,该方法包括以下步骤(i) 使单体聚合形成反应聚合物,和 (ii) 使反应聚合物与含有氰基的亚胺化合物反应。