2-Hydrazinoethanol → 3,3a,4,5,6,7-Hexahydro-3-phenyl-7-(phenylmethylene)-2-H-indazole-2-ethanol

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Reaction Steps

A suspension of the 2,6-bis(phenylmethylene)cyclohexanone from example 1a in methanol is treated with (2-hydroxyethyl)hydrazine. The mixture is heated and the resulting solution is refluxed for four hours, cooled, and the bulk of the methanol is evaporated. The resulting alcohol is triturated with ether, cooled overnight, filtered, and dried in vacuo.

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