Control of self-aldol condensation by pressure manipulation under compressed CO2.
Under supercritical CO2 conditions, simple adjustment of the pressure was found to successfully control the ratio of aldol to enal product in the self-aldol condensation of aldehyde, in which the enal product was obtained in a maximum selectivity of 94% at the critical pressure of 12MPa, whereas 85% selectivity to the aldol product was achieved at the subcritical region.
Supercritical Fluid Research Center, National Institute of Advanced Industrial Science and Technology, 4-2-1 Nigatake, Miyagino-ku, Sendai, Miyagi 983-8551, Japan.
Keitaro
K
Matsui
Hajime
H
Kawanami
Yutaka
Y
Ikushima
Hiromichi
H
Hayashi