Process for the synthesis of α-substituted acroleins

Details Process for the synthesis of α-substituted acroleins Process for the synthesis of α-substituted acroleins

2006-11-28

2006-11-28

Witherspoon, Sikarl A. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C568S559000, C568S461000

Reexamination Certificate

active

07141702

ABSTRACT:
The present invention provides an improved process for the synthesis of α-substituted acroleins from olefins by a tandem hydroformylation and Mannich reaction sequence in the presence of syngas and formaldehyde, wherein the two catalysts are segregated into two different phases thereby preventing deactivation of the catalysts by each other, and yielding a highly selective and active catalyst.

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R.M. Deshpande et al., “Biphasic catalysis for a selective oxo-Mannich tendem synthesis of methacrolein”, Journal of Molecular Catalysis A: chemical 211 (1-2) 49-53 Coden: JMCCF2, 1381-1169, 2004.

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