Overturning Indolyne Regioselectivities and Synthesis of Indolactam V
摘要:
We report the design and synthesis of an indolyne that displays a reversal in regioselectivity, in both nucleophilic addition and cycloaddition reactions, compared to typical 4,5-indolynes. Our approach utilizes simple computations to predict regioselectivity in reactions of unsymmetrical arynes. With this methodology, novel benzenoid-substituted indoles can be accessed with significant regiocontrol. Furthermore, the technology provides an unconventional tactic for the synthesis of C4-substituted indole alkaloids, as demonstrated by a synthesis of indolactam V.
Pd-Catalyzed Synthesis of Aryl and Heteroaryl Triflones from Reactions of Sodium Triflinate with Aryl (Heteroaryl) Triflates
作者:Lynette A. Smyth、Eric M. Phillips、Vincent S. Chan、José G. Napolitano、Rodger Henry、Shashank Shekhar
DOI:10.1021/acs.joc.5b02523
日期:2016.2.5
A novel method for Pd-catalyzed triflination of aryl and heteroaryl triflates using NaSO2CF3 as the nucleophile is described. The combination of Pd2(dba)3 and RockPhos formed the most effective catalyst. A broad range of functional groups and heteroaromatic compounds were tolerated under the neutral reaction conditions. The order of reactivity ArOTf ≥ ArCl ≥ ArBr is consistent with transmetalation
[EN] SULFONAMIDE DERIVATIVES AS BCL-2-SELECTIVE APOPTOSIS-INDUCING AGENTS FOR THE TREATMENT OF CANCER AND IMMUNE DISEASES<br/>[FR] AGENTS INDUISANT L'APOPTOSE SÉLECTIFS POUR BCL-2 POUR LE TRAITEMENT DU CANCER ET DES MALADIES IMMUNES
作者:Hofmann, Bernhard、Dauban, Philippe、Biron, Jean-Philippe、Potier, Pierre、Dodd, Robert H.
DOI:——
日期:——
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
Overturning Indolyne Regioselectivities and Synthesis of Indolactam V
作者:Sarah M. Bronner、Adam E. Goetz、Neil K. Garg
DOI:10.1021/ja200437g
日期:2011.3.23
We report the design and synthesis of an indolyne that displays a reversal in regioselectivity, in both nucleophilic addition and cycloaddition reactions, compared to typical 4,5-indolynes. Our approach utilizes simple computations to predict regioselectivity in reactions of unsymmetrical arynes. With this methodology, novel benzenoid-substituted indoles can be accessed with significant regiocontrol. Furthermore, the technology provides an unconventional tactic for the synthesis of C4-substituted indole alkaloids, as demonstrated by a synthesis of indolactam V.