C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 209/48 (2006.01)
Patent
CA 2044470
RD-21066 METHOD FOR CONDUCTING ORGANIC REACTIONS USING GUANIDINIUM SALT AS PHASE TRANSFER CATALYST Abstract Reactions between a solid polar and a non-polar compound, especially nucleophilic aromatic substitution reactions between an alkali metal salt of a hydroxyaromatic compound or thio analog thereof and an activated halo- or nitro-substituted aromatic compound, are conducted in a non- polar organic solvent such as toluene or xylene, in the presence of a hexaalkylguanidinium or .alpha.,.omega.- bis(pentaalkylguanidinium)alkane salt, or a corresponding heterocyclic salt, as a phase transfer catalyst. The method is particularly useful for the preparation of bisimides from bisphenol A or 4,4'-biphenol salts and 4-nitro- or 4- halophthalimides.
Barren James P.
Brunelle Daniel J.
Haitko Deborah A.
Singh Sunita
Company General Electric
Craig Wilson And Company
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