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2004
Cycloalkylphenyl derivatives
Q 0760
Pressure Control of Diastereodifferentiating [2 + 2] Photocycloaddition of
to Chiral Fumarate upon Direct and Charge-Transfer Excitation. —
47- 098 (E)-Stilbene
The geometry and association constants of the ground state charge-transfer complex of
the title reaction is significantly affected by applied pressure; thus enhancing the
reaction rate and the adduct yield particularly upon charge-transfer excitation (366 nm).
The diastereoselectivity, however, does not show any substantial change at elevated
pressure in both excitation modes. — (SAITO, H.; MORI, T.; WADA, T.; INOUE*, Y.;
Chem. Commun. (Cambridge) 2004, 14, 1652-1653; Dep. Mol. Chem., Fac. Eng.,
Osaka Univ., Suita, Osaka 565, Japan; Eng.) — M. Paetzel
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