Polyfunctionalized 3-nitropyridine derivatives by [4 + 2] cycloadditions of 4-nitro-3-phenylisoxazole-5-carboxylates with enamines: applications and limits
Polyfunctionalized 3-nitropyridine derivatives by [4 + 2] cycloadditions of 4-nitro-3-phenylisoxazole-5-carboxylates with enamines: applications and limits