Low pressure carbonylation of heterocycles

Details Low pressure carbonylation of heterocycles Low pressure carbonylation of heterocycles

2007-02-13

2009-08-04

Seaman, D. Margaret (Department: 1625)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C549S512000, C549S513000

Reexamination Certificate

active

07569709

ABSTRACT:
Heterocycles, e.g., epoxides, are carbonylated at low pressure with high percentage conversion to cyclic, ring expanded products using the catalystwhere L is tetrahydrofuran (THF).

REFERENCES:
patent: 6852865 (2005-02-01), Coates et al.
Getzier et al. Journal of the American Chemical Society, 2004, 126, 6842-6843.
Kramer, John W., et al., “Practical β-Lactone Synthesis: Epoxide Carbonylation at 1 atm”, Organic Letters, vol. 8, No. 17, 2006, pp. 3709-3712.

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