A simple and efficient access to new functionalized 4- phenacylideneflavenes#
An innovative and efficient approach towards diversity-oriented synthesis of 4-phenacylideneflavenes has been developed from substituted salicylaldehydes and acetophenones using iodine under solvent-free conditions. Both symmetrical and unsymmetrical func
Kinetics of the reactions of flavylium ions with π-nucleophiles
The kinetics of the reactions of the flavylium ion 1a and the 4′-methoxyflavylium ion 1b with various π-nucleophiles and tributylstannane were investigated photometrically in dichloromethane. Electrophilicity parameters E(1a) = -3.46 and E(1b) = -4.96 were derived from the equation log k (20°C) = s(E + N); these allow the prediction of potential reaction partners of the flavylium ions 1a and 1b.
Fichtner, Claudia,Remennikov, Grigoriy,Mayr, Herbert
p. 4451 - 4456
(2007/10/03)
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