HCID 5249038, compound → HCID 11440186, compound

Participants

Reaction Steps

 A solution of 380 mg of 9,9′-spirobifluorene-2,2′-dimethanol in 15 ml of toluene was admixed with 5 g of chromium(VI) oxide on graphite (Seloxcette, Alpha Inorganics) and refluxed under nitrogen for 48 hours. The mixture was then filtered with suction on a glass suction filter and the filtrate was evaporated. Chromatography on silica gel using chloroform and crystallization from methylene chloride/ether gave 152 mg of 9,9′-spirobifluorene-2,2′-dicarbaldehyde (mp. >300° C.) and

Provenance & Evidence