Immobilized quaternary phosphonium salt having phenol domain, method for producing same, and cyclic carbonate production method using same

Abstract

This immobilized quaternary phosphonium salt having a phenol domain is formed of at least an inorganic carrier and a quaternary phosphonium silane that is represented by general formula (1) and that has a phenol domain. A silicon atom of the quaternary phosphonium silane having a phenol domain is immobilized to the inorganic carrier via a covalent bond with an oxygen atom existing on the surface of the inorganic carrier. The immobilized quaternary phosphonium salt having a phenol domain enables production of a cyclic carbonate compound at an excellent yield under a mild condition such as at ordinary pressure and/or room temperature, and can be easily recovered and recycled after reaction. (R1 and R2 each represent a monovalent hydrocarbon group having 1-10 carbon atoms, R3 represents a divalent hydrocarbon group having 1-10 carbon atoms, R4-R6 each represent a monovalent hydrocarbon group having 1-10 carbon atoms, n represents an integer of 0-2, and X represents a halogen atom.)

Dependencies are inferred from the claim text.