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- W2907640918 abstract "A one-pot, simple, and eco-friendly synthesis of 2-oxo- and 2-thio-1,2,3,4-tetrahydropyrimidines using a Biginelli condensation between β-keto esters (methyl or ethyl acetoacetate), aromatic benzaldehydes, and urea or thiourea in the presence of CrCl 3 ·6H 2 O as an environmentally friendly and mild catalyst under solvent-free conditions has been performed. Based on reaction of benzaldehyde (1.0 mmol), ethyl acetoacetate (1.0 mmol), and urea (1.5 mmol), as well as 15 mol% of CrCl 3 ·6H 2 O catalyst, the 82% yield was reached within 30 minute reaction time. The advantages of this methodology are solvent-free conditions, ease of handling, one-pot nature, low-cost, environmental friendliness, simple purification of products, and short reaction time. Normal 0 false false false EN-US X-NONE AR-SA" @default.
- W2907640918 created "2019-01-11" @default.
- W2907640918 creator A5063712822 @default.
- W2907640918 date "2018-12-31" @default.
- W2907640918 modified "2023-09-26" @default.
- W2907640918 title "CrCl3•6H2O As an Environmentally Friendly and Efficient Catalyst for One-Pot, Synthesis of 2-oxo- and 2-thio-1,2,3,4-Tetrahydropyrimidines Under Solvent-Free Conditions" @default.
- W2907640918 doi "https://doi.org/10.7454/mss.v22i4.9865" @default.
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