The present invention relates to a process for the preparation of compounds of a 1,4-dialkyl-2,3-diol-1,4-butanedione by a catalytic aldol condensation between an alkyl glyoxal and an α-hydroxy ketone.
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US Patent 07321067 Process for the preparation of 1,4-dialkyl-2,3-diol-1,4-butanedioneUS Patent 7321067 Process for the preparation of 1,4-dialkyl-2,3-diol-1,4-butanedione