Chemistry Letters p. 57 - 60 (1985)
Update date:2022-07-31
Topics:
Suzuki, Michiyo
Matsumoto, Teruyo
Abe, Rumiko
Kimura, Yoshikazu
Terashima, Shiro
(+/-)-2,5,12-Trihydroxy-1,2,3,4-tetrahydronaphthacene-6,11-di-one-2-carboxylic acid was found to readily afford the racemic title compound by successive treatments with N,N'-carbonyldiimidazole and methylmagnesium bromide in the presence of trimethylsilyl triflate.The same reaction scheme could also furnish the optically pure title compound from the (R)-carboxylic acid produced by the optical resolution.
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