Title:
PRODUCTION OF AROMATIC METHYLENEEDIOXY COMPOUND
Document Type and Number:
Japanese Patent JPS52113967
Kind Code:
A
Abstract:
A method for preparing aromatic methylenedioxybenzene products which are optionally substituted in the aromatic ring by alkyl, aldehydo, carboxy, alkoxy, halo or nitro moieties; which comprises treating the corresponding dihydroxybenzene with methylene chloride in the presence of a catalyst selected from among ammonium, phosphonium or arsonium chlorides and bromides. The reaction is conducted in the aqueous phase in the presence of a suitable base, such as a sodium derivative to form a sodium salt of the dihydroxybenzene reactant. The aromatic methylenedioxy products of this invention are known compounds which are used in the chemical, pharmaceutical and cosmetic industries and they have utility as intermediates in the preparation of other known compounds.
Inventors:
PAORO MATSUGIONI
Application Number:
JP916977A
Publication Date:
September 24, 1977
Filing Date:
January 29, 1977
Export Citation:
Assignee:
BRICHIMA
International Classes:
B01J31/00; C07B61/00; C07D317/50; (IPC1-7): B01J31/02; C07D317/48