Process for the preparation of glycolaldehyde

Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing

Reexamination Certificate

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C568S458000

Reexamination Certificate

active

11693542

ABSTRACT:
Disclosed are catalyst solutions for the hydroformylation of formaldehyde comprising one or more fluorophosphite compounds, rhodium and a hydroformylation solvent comprising at least one N,N-disubstituted amide, N-substituted cyclic amide, or a mixture thereof. Also disclosed are hydroformylation processes wherein formaldehyde is contacted with carbon monoxide, hydrogen one or more fluorophosphite compounds, rhodium and a hydroformylation solvent to produce glycolaldehyde. The fluorophosphite-based catalysts provide good reaction rates and high selectivity to glycolaldehyde.

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Co-pending U.S. Appl. No. 11/670,628, filed on Feb. 2, 2007 (D80524).

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