NOVEL SUPPORTED PHOSPHAZENE CATALYSTS, NOVEL COMPOUNDS FOR THE CATALYSTS, AND USE THEREOF

摘要

Supported phosphazene catalysts each comprising a carrier and groups represented by the general formula (1) which are supported on the carrier: (1) wherein n represents the number of phosphazenium cations and is an integer of 1 to 8; Z^n- is an anion derived from an active hydrogen compound having at most eight active hydrogen atoms by removing n protons; a, b, c and d are each a positive integer of 3 or below; R's may be the same or different and are each hydrocarbyl of 1 to 10 carbon atoms, or two R's on the same nitrogen atom may be united to form a ring structure; R¹ is hydrogen or hydrocarbyl of 1 to 10 carbon atoms; and D is a direct bond or a divalent group capable of connecting the nitrogen atom to the carrier. The supported catalysts are extremely effective for various organic reactions. Further, the catalysts are reusable and therefore economically advantageous, because they cause little lowering in the activity even when recovered and reused. The catalysts can attain efficient polymerization of cyclic monomers, replacement of substituents, carbon-carbon bond formation, and other reactions.