HCID 12760922, compound → HCID 15729797, compound

Participants

Reaction Steps

A 100 ml autoclave was charged with 6.0 g of 7-hydroxy-2,4,4-trimethyl-4H-1-benzopyran synthesized by the method of Japanese Laid-Open Patent Publication No. 5475/1981, 1.0 g of 5% palladium-carbon and 20 ml of ethanol, and hydrogenation was carried out at 85° C. The resulting product was recrystallized from n-hexanetoluene to give 5.2 g (86%) of the desired product as colorless crystals (melting point 97°-98° C.).

Provenance & Evidence