Gas phase synthesis of methylene lactones using catalysts...

Details Gas phase synthesis of methylene lactones using catalysts... Gas phase synthesis of methylene lactones using catalysts...

2008-03-25

2008-03-25

Solola, Taofiq (Department: 1625)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

07348442

ABSTRACT:
Process for converting certain lactones to their alpha-methylene substituted forms using (i) a catalyst derived from a hydrotalcite or (ii) a composite catalyst comprising the hydrotalcite-derived catalyst into which at least one of lithium, sodium, potassium, rubidium, cesium, magnesium, calcium, strontium, barium has been incorporated.

REFERENCES:
patent: 6313318 (2001-11-01), Coulson et al.
patent: WO 99/52628 (1999-10-01), None
V. K. Diez et al., Latin American Applied Research, 33, 79-86 (2003).
N. N. Das et al, Bull. Mater. Sci. 25, (4) 283-289 (2002).

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