Journal of the Chemical Society. Perkin transactions II p. 259 - 262 (1986)
Update date:2022-08-10
Topics:
Inoue, Yoshihisa
Ikeda, Hirokazu
Hakushi, Tadao
Alkylation with methyl tosylate of stilbenediol dianion, prepared in the reaction of benzoin with a series of alkali-metal hydroxides in THF, gave (E)- and (Z)-α,α'-dimethoxystilbenes as the major products in most cases, the E:Z ratio of which varies from 0.4 to 5.0 depending upon the alkali-metal cation employed; the results are rationalized in the quasi-template effect in an acyclic system and the hard-soft ion principle.
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