M. S. Abaee, M. M. Mojtahedi, V. Hamidi
May 21, 2008
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11
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Journal
Synthesis
Abstract
Double crossed-aldol condensation of a variety of aromatic aldehydes with 1,3-dioxan-5-one in the presence of magnesium bromide diethyl etherate and diethylamine at room temperature is described. Excellent yields of 4,6-bis(arylmethylidene)dioxan-5-ones are achieved in a facile, one-pot, general procedure. The structure and the Z, Z-configuration of the exocyclic double bonds of the products were determined by spectroscopic methods and X-ray crystallography, respectively.