Pyridine → HCID 135818677, compound

Participants

Reaction Steps

An ice-cold mixture of 22 g (43 mmol) of 5-chloro-2-(2-hydroxyethyl)-7,10-bis(phenylmethoxy)anthra[1,9-cd]pyrazol-6(2H)-one, 12.3 g (65 mmol) of p-toluenesulfonyl chloride and 170 ml of pyridine is stirred for 50 hours. The solid is filtered, washed with methanol and diethyl ether, and dried to give 10.5 g of the product; mp 203°-206° C. (decomposition). Processing of the filtrate gives 9.3 g of additional product; mp 182°-188° C. (decomposition).

Provenance & Evidence