Sodium borohydride → 2,9-dibromo-13,13-dimethyl-13H-indeno[1,2-b]anthracene

Participants

Reaction Conditions

Reaction Steps

2,9-Dibromo-13,13-dimethyl-6H-indeno[1,2-b]anthracen-11(13H)-one (13 g, 1 eq, 0.027 mol) was placed in a flask, and IPA (200 ml) was added thereto. Then, sodium borohydride (3.1 g, 3 eq, 0.081 mol) was gradually added at 0° C., the reaction mixture was stirred at 100° C. while heating for 24-36 hours and cooled to room temperature, and ice water was gradually added thereto. The resultant solid was filtered, several times washed with distilled water, dried and purified by column chromatography to give 2,9-dibromo-13,13-dimethyl-13H-indeno[1,2-b]anthracene (EMI 11) (8.5 g, yield=70%).

Provenance & Evidence