3-Benzoyl-1,4-isochromandione derivatives were prepared by cyclization of phenacyl phthalates (2). The cyclization was done in the presence of N-methylpyrrolidone and potassium hydroxide. These compounds served as intermediates for the synthesis of more complicated isocoumarine derivatives. A Wittig reaction with (carbethoxymethylene)triphenyl phosphorane was conducted in a microwave reactor and resulted in the formation of substituted 4-phenylpyrano[3,2-c]isochromene-2,6-dione.
3-benzoyl-4-hydroxyisochromen-1-one derivatives, their synthesis and synthetic application
BERTOLASI, Valerio
2006
Abstract
3-Benzoyl-1,4-isochromandione derivatives were prepared by cyclization of phenacyl phthalates (2). The cyclization was done in the presence of N-methylpyrrolidone and potassium hydroxide. These compounds served as intermediates for the synthesis of more complicated isocoumarine derivatives. A Wittig reaction with (carbethoxymethylene)triphenyl phosphorane was conducted in a microwave reactor and resulted in the formation of substituted 4-phenylpyrano[3,2-c]isochromene-2,6-dione.File in questo prodotto:
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