Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 74, Issue 9, Pages 3398-3401Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jo900215a
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Funding
- National Natural Science Foundation of China [20672091]
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The domino reactions of 1,3-thiazolidinedione, malononitrile, and aromatic aldehydes in the presence of different organic amines were studied. Secondary amines such as pyrrolidine, piperidine, morpholine, and dimethylamine and primary amines such as benzylamine yield dihydrothiophene derivatives through a domino ring-opening/recyclization reaction of 1,3-thiazolidinedione. Bulky diethylamine, diisopropylamine, and 1,4-diazabicyclo[2.2.2]octane give spirocyclohexano-1,3-thiazole through a double Michael addition/spirocyclization reaction.
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