SYNTHESIS OF 2-METHYLCHROMONE-8-ACETIC ACIDS AND 2-METHYLCHROMONE-8-CARBOXYLIC ACIDS
摘要:
2-Hydroxy-3-allylacetophenones on Claisen condensation with EtOAc/Na gave intermediate diketone, followed by cyclization in AcOH/HCl gave 8-allyl/-1-propenylchromones. which on ozonolysis gave X-acetaldehydes or 8-carboxaldehydes. The above aldehydes on oxidation with KMnO4 furnished corresponding 8-acetic acids and 8-carboxylic acids.
SYNTHESIS OF 2-METHYLCHROMONE-8-ACETIC ACIDS AND 2-METHYLCHROMONE-8-CARBOXYLIC ACIDS
摘要:
2-Hydroxy-3-allylacetophenones on Claisen condensation with EtOAc/Na gave intermediate diketone, followed by cyclization in AcOH/HCl gave 8-allyl/-1-propenylchromones. which on ozonolysis gave X-acetaldehydes or 8-carboxaldehydes. The above aldehydes on oxidation with KMnO4 furnished corresponding 8-acetic acids and 8-carboxylic acids.