2-Chloro-9H-fluoren-9-one hydrazone → HCID 12871632, compound

Participants

Reaction Steps

A mixture of (19) (5.3 g, 23.2 mmoL) and activated manganese dioxide (20 g, 232.5 mmoL, 10 eq) in tetrahydrofuran (500 mL) was stirred at room temperature for 18 h. The mixture was then filtered through celite and concentrated to provide 5.3 g (100%) of product (20) as a red solid: mp 102°-108° C.

Provenance & Evidence