Polymer-supported 4-(N-benzyl-N-methylamino)pyridine catalyst an

Details Polymer-supported 4-(N-benzyl-N-methylamino)pyridine catalyst an Polymer-supported 4-(N-benzyl-N-methylamino)pyridine catalyst an

1991-05-14

1993-07-20

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526258, C08F 244, C08F22606

Patent

active

052294790

ABSTRACT:
A cross-linked polymer-supported 4-(N-benzyl-N-methylamino) pyridine material and process for its preparation in high yield and having effective physical and catalytic properties. The polymer-supported catalyst is characterized by the suspension copolymerization of an organic phase containing the corresponding vinyl-substituted pyridine monomer, a styrene monomer, and a suitable cross-linking agent and free radical-generating catalyst in the presence of an aqueous phase containing a cellulose ether derivative as the stabilizing agent. The catalyst is further characterized by its yield in excess of 90% by weight and by its predominant and generally spherical and smooth bead form and substantially uniform size that is efficiently hard and durable and possesses sufficient catalytic activity for effective use in acylation, alkylation or other related reactions.

REFERENCES:
patent: 3862924 (1975-01-01), Hamann et al.
patent: 3941729 (1976-03-01), Klein
patent: 4091054 (1978-05-01), Saito
Tomoi, M., Akada, Y., Kakiuchi, H.; Synthesis and Catalytic Activity of Polymer-bound 4-(N-Benzyl-N-Methylamino)Pyridine., Rapid Commun. 3 537 (1982).

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