4-Methyl-2-oxo-2H-chromene-3-carboxylic acid synthesis
- Product Name:4-Methyl-2-oxo-2H-chromene-3-carboxylic acid
- CAS Number:833-31-8
- Molecular formula:C11H8O4
- Molecular Weight:204.18
2033-24-1
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$6.00/25g
118-93-4
583 suppliers
$10.00/25g
833-31-8
15 suppliers
$65.00/50mg
Yield:833-31-8 99%
Reaction Conditions:
with tomato juice in water at 20; for 0.0833333 h;Sonication;Green chemistry;Knoevenagel Condensation;Reagent/catalyst;
Steps:
Coumarin-3-carboxylic andcinnamic acids synthesis. General procedure
General procedure: 2-Hydroxybenzaldehyde (acetophenone, or benzaldehydes) (1.0 mmol) and Meldrum’s acid (1.01 mmol) were suspended in the aqueous medium (juice or waste water) (2 mL). The resulting mixture was subjected to ultrasound irradiation at room temperature for 5 min (15 min). The precipitate so formed was filtrated under vacuum. Structural assignments (NMR) was made by comparison of the recorded analytical data with those of commercially available sample or those already reported for the same compounds.2-6 The aqueous medium (juice or waste water) was recovered by filtration and re-used as such to perform further processes.
References:
Fiorito, Serena;Taddeo, Vito Alessandro;Genovese, Salvatore;Epifano, Francesco [Tetrahedron Letters,2016,vol. 57,# 43,p. 4795 - 4798] Location in patent:supporting information
24526-68-9
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833-31-8
15 suppliers
$65.00/50mg
118-93-4
583 suppliers
$10.00/25g
833-31-8
15 suppliers
$65.00/50mg
24526-69-0
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$22.00/1g
833-31-8
15 suppliers
$65.00/50mg
1196-29-8
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$130.00/1g
833-31-8
15 suppliers
$65.00/50mg