Facile Synthesis of Indolines by a Tandem Nitro-reduction Aza Michael Addition Reaction
摘要:
A diverse array of substrates are conveniently prepared by coupling diazonium salts to ethyl vinyl ether and subjecting the resultant aldehyde intermediate to a Wittig reaction to provide alpha,beta-unsaturated esters with only one purification step. The cyclisation of 4-aryl-but-2-enoates is carried out in the presence of stoichiometric amounts of SnCl2 center dot 2H(2)O and thus this one-pot strategy also permitted the expeditious synthesis of indolines in good yield.
Continuous-Flow Synthesis of Monoarylated Acetaldehydes Using Aryldiazonium Salts
作者:Natalia Chernyak、Stephen L. Buchwald
DOI:10.1021/ja305660a
日期:2012.8.1
Anilines and ethyl vinyl ether can be used as precursors for a process that is the synthetic equivalent of the α-arylation of acetaldehyde enolate. The reaction manifests a high level of functional group compatibility, allowing the ready preparation of a number of synthetically valuable compounds.
Correction to Continuous-Flow Synthesis of Monoarylated Acetaldehydes Using Aryldiazonium Salts
作者:Natalia Chernyak、Stephen L. Buchwald
DOI:10.1021/ja309119y
日期:2012.10.31
Synthesis of Indolines via a SmI<sub>2</sub>Promoted Domino Nitro Reduction-Intramolecular<i>aza</i>-Michael Reaction
作者:Josierika A. Ferreira Ramos、Carolina S. Araújo、Tanus J. Nagem、Jason G. Taylor
DOI:10.1002/jhet.1982
日期:2015.1
straightforward synthesis of substitutedindolines based on a domino nitro reduction intramolecular aza‐Michael reaction is described. The reaction employs Samarium diiodide under mild conditions for the addition of dibromoacetic acid to substituted 2‐(2‐nitrophenyl) acetaldehyde derivatives and their subsequent cyclization upon nitro group reduction to provide corresponding indoline heterocycles in good yields
Facile Synthesis of Indolines by a Tandem Nitro-reduction Aza Michael Addition Reaction
作者:Jason Guy Taylor、Wellington Martins Ventura、Luiz Guilherme Souza de Assis
DOI:10.3987/com-13-12789
日期:——
A diverse array of substrates are conveniently prepared by coupling diazonium salts to ethyl vinyl ether and subjecting the resultant aldehyde intermediate to a Wittig reaction to provide alpha,beta-unsaturated esters with only one purification step. The cyclisation of 4-aryl-but-2-enoates is carried out in the presence of stoichiometric amounts of SnCl2 center dot 2H(2)O and thus this one-pot strategy also permitted the expeditious synthesis of indolines in good yield.