TITANIUM (IV) COMPOUNDS AND METHODS OF FORMING HETEROCYCLIC COMPOUNDS USING SAME
申请人:REGENTS OF THE UNIVERSITY OF MINNESOTA
公开号:US20160200746A1
公开(公告)日:2016-07-14
The present disclosure provides Titanium (IV) compounds and methods of making heterocyclic compounds such as pyrroles using Titanium (IV) compounds. In certain embodiments, the Titanium (IV) compound is present in catalytic amounts.
Bis(imido)vanadium(V)-Catalyzed [2+2+1] Coupling of Alkynes and Azobenzenes Giving Multisubstituted Pyrroles
作者:Kento Kawakita、Evan P. Beaumier、Yuya Kakiuchi、Hayato Tsurugi、Ian A. Tonks、Kazushi Mashima
DOI:10.1021/jacs.8b13390
日期:2019.3.13
[2+2+1] coupling reaction of alkynes and azobenzenes, giving multisubstituted pyrroles. A plausible reaction mechanism involves the generation of a mono(imido)vanadium(III) species as an initiation step, where 1a served as an imido source with concomitant release of 2 equiv of ClSiMe3, followed by a reaction with azobenzene to form a catalytically active bis(imido)vanadium(V) species via N═N bond cleavage
In Situ Catalyst Generation and Benchtop-Compatible Entry Points for Ti<sup>II</sup>/Ti<sup>IV</sup> Redox Catalytic Reactions
作者:Zachary W. Davis-Gilbert、Kento Kawakita、Daniel R. Blechschmidt、Hayato Tsurugi、Kazushi Mashima、Ian A. Tonks
DOI:10.1021/acs.organomet.8b00474
日期:2018.12.10
The development of several in situ generated catalyst systems for Ti-catalyzed oxidative nitrenetransfer reactions is reported. The simplest and widely applicable catalyst system, TiCl4(THF)2/Zn0, can be set up on the benchtop under air. This system uses commercially available reagents and can be used as an entry point for TiII/TiIV multicomponent redox reactions for the synthesis of pyrroles, α,γ-unsaturated
报道了几种用于钛催化氧化氮烯转移反应的原位生成催化剂体系的开发。最简单且应用广泛的催化剂体系TiCl 4 (THF) 2 /Zn 0可以在空气下安装在台式上。该系统使用市售试剂,可用作 Ti II /Ti IV多组分氧化还原反应的入口点,用于合成吡咯、α,γ-不饱和亚胺、α,β-不饱和亚胺、环丙亚胺和芳烃。
Titanium (IV) compounds and methods of forming heterocyclic compounds using same
申请人:REGENTS OF THE UNIVERSITY OF MINNESOTA
公开号:US10065976B2
公开(公告)日:2018-09-04
The present disclosure provides Titanium (IV) compounds and methods of making heterocyclic compounds such as pyrroles using Titanium (IV) compounds. In certain embodiments, the Titanium (IV) compound is present in catalytic amounts.