Ethyl 2-oxo-4-propyl-2H-chromene-3-carboxylate synthesis

3synthesis methods

Yield:-

Steps:

Multi-step reaction with 5 steps
1: ammonium acetate; benzene; acetic acid
2: sulfuric acid
3: aq. NaOH solution
4: thionyl chloride
5: pyridine

References:

Wiener et al. [Journal of the American Chemical Society,1957,vol. 79,p. 5301]

64-17-5 Synthesis

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