期刊
APPLIED CATALYSIS A-GENERAL
卷 402, 期 1-2, 页码 11-22出版社
ELSEVIER
DOI: 10.1016/j.apcata.2011.04.012
关键词
Silica bonded n-propyl-4-aza-1-azoniabicyclo[2.2.2]octane; chloride (SB-DABCO); 4H-Benzo[b]pyran; Silica supported catalyst; Alkylmalonate; 5,5-dimethylcyclohexane-1,3-dione
资金
- Persian Gulf University Research Council
The reaction of 3-chloropropyl silica with diazabicyclo[2.2.2]octane in dry acetone affords silica bonded n-propyl-4-aza-1-azoniabicyclo[2.2.2]octane chloride (SB-DABCO) as a new basic catalyst. The catalyst is used for the efficient synthesis of 4H-benzo[b]pyran derivatives via one-pot three-component reaction of cyclic ketones/1,3-diketones with aromatic aldehydes and alkylmalonates. (C) 2011 Elsevier B.V. All rights reserved.
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