Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
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.
REFERENCES:
patent: 4041082 (1977-08-01), Onoda et al.
patent: 4408079 (1983-10-01), Merger et al.
patent: 4496770 (1985-01-01), Duembgen et al.
patent: 5064508 (1991-11-01), Weber et al.
patent: 5689010 (1997-11-01), Paciello et al.
patent: 6225507 (2001-05-01), Giessler et al.
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.
Chaudhari Raghunath V.
Deshpande Raj M.
Diwakar Makarand M.
Council of Scientific and Industrial Research
Darby & Darby
Witherspoon Sikarl A.
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