Chinese Journal of Applied Chemistry ›› 1985, Vol. 0 ›› Issue (1): 8-14.

• Full Papers • Previous Articles     Next Articles

CATALYTIC BEHAVIOR OF SOME TRIPHASE CATALYSTS IN THE NUCLEOPHILIC SUBSTITUTION AND DICHLOROCARBENE ADDITION REACTIONS

Chen Zhengguo, Wang Fuhua, Zhang Chaocan, Xu Yuwu   

  1. Department of Chemistry, Wuhan University
  • Received:1984-05-07 Revised:1984-07-03 Published:1985-03-10 Online:1985-03-10

Abstract: Catalytic characteristics of four types of triphase catalysts: polymericcrown ethers (A), polymeric azacrown ethers(B),modified phenol formaldehyderesin containing benzo-15-crown-5 (C) and crosslinked acyclic polypode po-lyethers (D) in the cyano-and iodo-substitutions and the addition reactionof dichlorocarbene to styrene were studied. The catalytic activity of polymerswas found in following sequence: (B) (with>NR in the ring)>(A)>(C)>(D)>(B) (with>NH in the ring). The best one among the polymeric cata-lysts studied is that containing azacrown ether with N-alkyl group.