By-products from Mannich Reaction of Dihydrobenzopyranones

By-products from Mannich Reaction of Dihydrobenzopyranones[J]. Journal of China Pharmaceutical University, 1996, (2): 71-73.

Citation:

By-products from Mannich Reaction of Dihydrobenzopyranones[J]. Journal of China Pharmaceutical University, 1996, (2): 71-73.

Citation:

By-products from Mannich Reaction of Dihydrobenzopyranones[J]. Journal of China Pharmaceutical University, 1996, (2): 71-73.

Abstract

It was reported that 3-aminoalkyl benzopyranones were obtained by Mannich reaction of 2-monosubstituted benzopyranones with paraformaldehyde.However,all attempts to introduce the 3-aminoalkyl group directly to the 2-disubstituted benzopyranones were unsuc

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