95060-72-3Relevant articles and documents
Reaction of Ethyl χ-Bromo-β-methoxycrotonate with Carbonyl Compounds. Synthesis of 4-methoxy-6-substituted-5,6-dihydro-2H-pyran-2-ones and 3-Substituted 3-Pyrazolin-5-ones
Shandala, Mowafak Y.,Ayoub, Mikdad T.,Mohammad, Mouyayed J.
, p. 1755 - 1756 (2007/10/02)
Ethyl β-methoxycrotonate I reacts with substituted carbonyl compounds II in benzene to give 4-methoxy-6-substituted-5,6-dihydro-2H-pyran-2-ones III.The reaction of IIIa and j with hydrazine hydrate in ethanol leads to 3--5-hy