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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
被引:22
|作者:
Jannati, Saeideh
[1
]
Esmaeili, Abbas Ali
[1
]
机构:
[1] Ferdowsi Univ Mashhad, Fac Sci, Dept Chem, Mashhad 9177948974, Iran
来源:
关键词:
Multicomponent reactions;
Cyclohexane-1,3-dione;
Tungstophosphoric acid;
Spirooxindole;
POT 3-COMPONENT SYNTHESIS;
N-ALKYL ISATINS;
MULTICOMPONENT REACTIONS;
THIAZOLOPYRIMIDINE DERIVATIVES;
CONVENIENT SYNTHESIS;
CONCISE SYNTHESIS;
HETEROPOLY ACIDS;
EFFICIENT;
CHEMISTRY;
ANALOGS;
D O I:
10.1016/j.tet.2018.04.092
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
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-benzo14,51thiazolo[3,2-a]pyrimidin-4-ones, employing 12-tungstophosphoric acid (H3PW12O40) as an effective and inexpensive catalyst. (C) 2018 Elsevier Ltd. All rights reserved.
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页码:2967 / 2972
页数:6
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