Poly(4-tert-butylstyrene) as a soluble polymer support in homogeneous catalysis.
[reaction: see text] Use of soluble poly(4-tert-butylstyrene) (PtBS) as a support in synthesis is demonstrated. These soluble polymers supported catalysts that were used in a monophasic medium. Subsequent separation of the catalysts after reaction was effected either by cooling- or by water-induced liquid/liquid-phase separation. Specific catalysts studied included both phosphine and DMAP nucleophilic catalysts. Low loadings of an azo dye quantified the efficiency of separation and recovery of these catalysts through multiple reaction cycles.
Bergbreiter
David E
DE
Chemistry Department, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, USA. bergbreiter@tamu.edu
Li
Chunmei
C