HCID 19735100, compound → HCID 19735139, compound

Participants

Reaction Steps

Active manganese dioxide (300 mg) was added to a solution of Compound 115 (100 mg) in dichloromethane (3 ml) and the mixture was stirred at room temperature for 1 hour. The insoluble substance was filtered off through celite and the filtrate was distilled off under reduced pressure to obtain 6-formyl-2,2-dimethyl-4-(2-pyridyl)-2H-1,3-benzoxazine (40 mg) (Compound 116). Likewise, Compound 146 was prepared from Compound 145.

Provenance & Evidence