MESO-SUBSTITUTED TRIPYRRANE COMPOUNDS, COMPOSITIONS, AND METHODS FOR MAKING AND USING THE SAME

摘要

A compound of formula (I) wherein: Q represents identical alkyl groups, cycloalkyl groups having from 5 to 7 ring atoms, or aryl or heteroaryl groups having from 5 to 12 ring atoms and R represents identical hydrogen, alkyl, alcohol or carbonyl-containing groups; or a composition containing from 5 to 100 mole % by weight of the compound of formula (I). A novel method for synthesizing the compounds of formula (I) comprises the steps of: (a) reacting a compound of the formula: Q-CHO or Q-CH(OS)(OS') wherein Q is as defined above and S and S' are independently lower alkyl, an aryl group containing from 5 to 14 ring atoms, and -(CH2)n- where n=2-4, with an excess amount of a pyrrole in the presence of a catalytic amount of a strong Lewis or Bronsted acid; (b) removing any unreacted pyrrole or other solvents used by evaporation; (c) removing polymeric materials and removing the corresponding dipyrromethane by-product, leaving the compound of formula (I).