Anomalous role of molecular sieves 4A in the preparation of a binaphthol-derived active µ3-oxo titanium catalyst
Abstract
The active species of binaphthol-derived titanium catalyst 1, which is
used as an efficient catalyst for glyoxylate–ene reactions, is
primarily composed of a µ
3
-oxo (Ti
3
O) species,
for which the molecular sieves 4A employed in the catalyst preparation act
as a H
2
O donor.
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