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N-Heterocyclic carbene copper(I) complex-catalyzed synthesis of 2-aryl benzoxazoles and benzothiazoles
(2016)
A new and efficient synthesis of 2-arylbenzoxazoles and benzothiazoles using a copper N-heterocyclic carbene complex is described. In a simple protocol a variety of 2-substituted benzoxazoles and benzothiazoles were obtained ...
Synthesis of 6-substituted 2-pyrrolyl and indolyl benzoxazoles by intramolecular O-arylation in photostimulated reactions
(American Chemical Society, 2012-02)
The synthesis of a series of 6-substituted 2-pyrrolyl and 2-indolyl benzoxazoles by photostimulated C-O cyclization of anions from 2-pyrrole carboxamides, 2-indole carboxamides, or 3-indole carboxamides has been found to ...
Experimental and computational study of 6-exo and 7-endo cyclization of Aryl radicals followed by Tandem SRN1 substitution
(American Chemical Society, 2013-04)
The reaction of N-allyl-N-(2-halobenzyl)-acetamides and derivatives was investigated in liquid ammonia under irradiation with the nucleophiles Me3Sn−, Ph2P− and O2NCH2 −. Following this procedure, novel substituted 2- ...
Synthesis of 3-aryl-1,2,4-benzotriazines via intramolecular cyclization of solid-supported o-hydrazidoanilines
(Springer, 2012-10)
An efficient solid-phase protocol for the rapid generation of libraries of biologically promising 1,2,4-benzotriazines, including amino acid-derived components, is described.
Síntese de 3-Trifluoracetil-1H-pirróis N-Aril substituídos
(Universidade Federal de Santa MariaBRQuímicaUFSMPrograma de Pós-Graduação em Química, 2011-07-29)
This work presents a new, simple and versatile strategy for the synthesis of new N-aryl substituted 3-trifluoroacetyl-1H-pyrroles. The pyrroles were obtained by the reaction of 3-trifluoroacetyl-4,5-dihydrofuran with aryl ...
Aryl Naphthoates: A Conformational Analysis Supported by Single-Crystal X-Ray Diffraction
(Csiro Publishing, 2016-08)
The conformational study by X-ray diffraction of 12 aroyl esters of ortho-acetyl phenols is reported. The data are supported by theoretical calculations and described in terms of co-planarity, intramolecular steric ...
Síntese de 3H-pirido[2,3-b][1,4]diazepinos trifluormetil substituídos e diazepinonas análogas
(Universidade Federal de Santa MariaBRQuímicaUFSMPrograma de Pós-Graduação em Química, 2006-12-19)
The present research describes new synthetic methodologies for the synthesis of new series of 2-aryl(heteroaryl)-4-trifluoro-4,5-dihydro-3Hpyrido[2,3-b][1,4]diazepin-4-ols and 2-aryl(heteroaryl)-3H-pyrido[2,3-b][1,4]diaz ...
Microwave-Assisted Organocatalytic Intramolecular Knoevenagel/Hetero Diels–Alder Reaction with O -(Arylpropynyloxy)-Salicylaldehydes: Synthesis of Polycyclic Embelin Derivatives
(American Chemical Society, 2016-10)
highly efficient and regioselective approach to new polycyclic embelin derivatives through a domino Knoevenagel condensation/intramolecular hetero Diels−Alder reaction using O-(arylpropynyloxy)-salicylaldehydes in the ...
Competitive reaction pathways for o-Anilide aryl radicals: 1,5-Or 1,6-hydrogen transfer versus nucleophilic coupling reactions. A novel rearrangement to afford an amidyl Radical
(American Chemical Society, 2009-02)
The photoinduced reactions of o-iodoanilides (o-IC6H 4N(Me)COR, 4a-d) with sulfur nucleophiles such as thiourea anion (1, -SCNH(NH2)), thioacetate anion (2, MeCOS-), and sulfide anion (3,S2-) follow different reaction ...