Method for producing optionally substituted...

Details Method for producing optionally substituted... Method for producing optionally substituted...

2005-04-19

2010-12-07

Solola, Taofiq A (Department: 1625)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

07847110

ABSTRACT:
The invention relates to a method for producing optionally substituted methylenedioxybenzene. The invention particularly relates to the production of methylenedioxybenzene. The inventive production method is characterized by the fact that it involves the reaction of an optionally substituted catechol with an aldehyde in the presence of a solid acid catalyst selected among: a titanium silicalite and a zeolite that is doped with tin and/or titanium.

REFERENCES:
patent: 0261977 (1988-03-01), None
patent: 0271091 (1988-06-01), None
Li et al., Montmorillonite clay catalysis. Part 14. A facile synthesis of 2-substituted and 2,2-disubstituted 1,3-benzodioxoles, Journal of the Chemical Society, Perkin Trans., 1998, pp. 3561-3564, No. 21.
International Search Report Issued in PCT/FR 2005/000954 pm Sep. 19, 2005.

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