Highly Selective Aldol Reaction of Dibenzoylmethanes with Formaldehyde Catalyzed by Cobalt Schiff Base Complex under Neutral Conditions

DOI: 10.1016/00404-0399(50)1074R-

Source and publish data:

Tetrahedron Letters p. 5609 - 5612 (1995)

Update date:2022-07-29

Topics:

Authors:

Maruyama, Kazushige

Kubo, Katsunobu

Toda, Yukinobu

Kawase, Kazuhiko

Mashino, Takahiro

Nishinaga, Akira

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Article abstract of DOI:10.1016/00404-0399(50)1074R-

Coordinatively saturated hydroxocobalt(III) Schiff base complexes catalyze highly selective aldol reaction of dibenzoylmethanes with formaldehyde in methanol to give 1,3-dibenzoylpropanes, resulting from retro-Claisen reaction of 1,1,3,3-tetrabenzoylpropanes, which are obtained quantitatively in dichlorometane.Coordinatively saturated cobalt(III) Schiff base complexes ligating a substrate anion as a monodentate ligand is found to be the reactive species.

Full text of DOI:10.1016/00404-0399(50)1074R-

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