Title : ( Synthesis of novel spiro[benzo[4,5]thiazolo[3,2-a]chromeno[2,3-d]pyrimidine-14,3′-indoline]-1,2′,13(2H)-triones via three component reaction )
Authors: saeideh janati , Abbas Ali Esmaeili ,
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Abstract
A new and efficient method for the synthesis of hitherto unreported spiro[benzo[4,5]thiazolo[3,2-a]chromeno[2,3-d]pyrimidine-14,3′-indoline]-1,2′,13(2H)-triones was developed via the Domino Knoevenagel condensation–Michael addition–intermolecular cyclization sequences of isatin derivatives, cyclohexane-1,3-diones, and 2-hydroxy-4H-benzo[4,5]thiazolo[3,2-a]pyrimidin-4-ones, employing 12-tungstophosphoric acid (H3PW12O40) as an effective and inexpensive catalyst.
Keywords
, Multicomponent reactions, Cyclohexane-1, 3-dione, Tungstophosphoric acid, Spirooxindole
@article{paperid:1068671,
author = {Janati, Saeideh and Esmaeili, Abbas Ali},
title = {Synthesis of novel spiro[benzo[4,5]thiazolo[3,2-a]chromeno[2,3-d]pyrimidine-14,3′-indoline]-1,2′,13(2H)-triones via three component reaction},
journal = {Tetrahedron},
year = {2018},
volume = {74},
number = {24},
month = {May},
issn = {0040-4020},
pages = {2967--2972},
numpages = {5},
keywords = {Multicomponent reactions; Cyclohexane-1;3-dione; Tungstophosphoric acid; Spirooxindole},
}
%0 Journal Article
%T Synthesis of novel spiro[benzo[4,5]thiazolo[3,2-a]chromeno[2,3-d]pyrimidine-14,3′-indoline]-1,2′,13(2H)-triones via three component reaction
%A Janati, Saeideh
%A Esmaeili, Abbas Ali
%J Tetrahedron
%@ 0040-4020
%D 2018
