- Reaction of 2-Dimethyaminomethylene-1,3-diones with Dinucleophiles. II. Synthesis of 5-(Alkyl)(Phenyl)-4-acylisoxazoles and 6,7-Dihydro-1,2-benzisoxazol-4(5H)-ones
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The reaction of open-chain and cyclohexane sym-2-dimethyaminomethylene-1,3-diones with hydroxylamine hydrochloride in refluxing methanol gave in good to moderate yields a series of 5-(alkyl)(phenyl)-4-acylisoxazoles and 6,7-dihydro-1,2-benzisoxazol-4(5H)-ones, respectively.As 3-unsubstituted isoxazoles, all these compounds easily isomerized with sodium methoxide to the corresponding 2-cyano-1,3-diones in high yields.
- Menozzi, Giulia,Schenone, Pietro,Mosti, Luisa
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p. 645 - 648
(2007/10/02)
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