Citation:
Cheng Jiang, Qi Dong You. An efficient and solvent-free one-pot synthesis of dihydropyrimidinones under microwave irradiation[J]. Chinese Chemical Letters,
;2007, 18(6): 647-650.
doi:
10.1016/j.cclet.2007.04.002
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An efficient synthesis of 3, 4-dihydropyrirnidin-2(1H)-one derivatives using formic acid as catalyst, from aldehydes, β-ketoester and urea (thiourea) without solvent under the irradiation of microwave is described.Compared with the classical Biginelli reaction, this new method has the advantage of good yields (77-94% for aromatic aldehydes) and short reaction time (3-8 min).
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Keywords:
- Biginelli reaction,
- 3, 4-Dihydropyrimidone,
- Microwave,
- Solvent-free,
- Formic acid
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