Synthesis of Functionalized Cyclohexenone Core of Welwitindolinones via Rhodium-Catalyzed [5 + 1] Cycloaddition
摘要:
The cyclohexenone core of welwitindolinones was synthesized by a Rh(I)-catalyzed [5 + 1]-cycloaddition of an allenylcyclopropane with CO. A pentasubstituted cyclopropane was prepared successfully by a Rh(II)-catalyzed intramolecular cyclopropanation of alkenes with chlorodiazoacetates.
Indolyne Experimental and Computational Studies: Synthetic Applications and Origins of Selectivities of Nucleophilic Additions
作者:G-Yoon J. Im、Sarah M. Bronner、Adam E. Goetz、Robert S. Paton、Paul H.-Y. Cheong、K. N. Houk、Neil K. Garg
DOI:10.1021/ja1086485
日期:2010.12.22
conditions, trapped by a variety of nucleophilic reagents, and used to access a number of novel substituted indoles. Nucleophilicaddition reactions to indolynes proceed with varying degrees of regioselectivity; distortion energies control regioselectivity and provide a simple model to predict the regioselectivity in the nucleophilicadditions to indolynes and other unsymmetrical arynes. This model
1,2,4-OXADIAZOLE DERIVATIVES AND THEIR THERAPEUTIC USE
申请人:Giulio Matassa Victor
公开号:US20110311485A1
公开(公告)日:2011-12-22
The present disclosure relates to 1, 2, 4 oxadiazole derivatives of formula (I) as well as pharmaceutical compositions comprising them, and their use in therapy as agonists of the S1P1 receptors.
developed a highly selective and efficient multicomponent transformation by utilizing alkynes and olefins/(hetero)arenes through photoinduced energy-transfer catalysis. The reaction involves the formation of three distinct chemical bonds, namely C(sp3)–C(sp2), C(sp2)–C(sp3), and C(sp3)–N, in a single coordinated manner. The strategy used a vinyl radical-mediated radical relay approach under mild conditions
Visible-Light Photoredox-Catalyzed Intermolecular α-Aminomethyl/Carboxylative Dearomatization of Indoles with CO<sub>2</sub> and α-Aminoalkyl Radical Precursors
作者:Wanxu Gao、Qi Yang、Han Yang、Yang Yao、Junxue Bai、Jianwei Sun、Song Sun
DOI:10.1021/acs.orglett.3c03755
日期:2024.1.19
α-aminomethyl/carboxylative dearomatization of indoles with CO2 and α-aminoalkyl radical precursors, affording a series of functionalized indoline-3-carboxylic acids and lactams in good yields with high regioselectivity. This multicomponent reaction provides a green and facile method for the synthesis of diverse functionalized indolines by using CO2 as the carboxylic and carbonyl source.
this research employed the bifunctional reagents benzotriazole carboxylic acid oxime esters to simultaneously generate benzotriazole and imine radicals. The synthesis of two distinct C–N bonds in a single conversion is showcased through radical addition and radical–radical cross-coupling processes between benzotriazole carboxylic acid oxime ester and olefins. This process facilitates the intermolecular