Methylation of hinokitiol and 7-iodohinokitiol yielded two isomeric methyl ethers by the ratio of about 1 : 1, respectively. The proton and 18C nucleo magnetic resonance spectra of methyl ethers of 7-iodohinokitiol were discussed to elucidate the structures. Isomers of hydrazino-isopropyl-tropone and hydrazino-iodoisopropyl-tropone were obtained by the reaction of the corresponding methyl ethers with hydrazine hydrate. Series of Schiff bases were synthesized by condensation of aromatic aldehydes with these hydrazinotropones and 5-aminohinokitiol, respectively.
