METHODS OF STABILIZING THIOPHENE DERIVATIVES

摘要

Methods of stabilizing thiophene derivatives of the general formula (I) by treatment with basic compounds: wherein R¹ and R² each independently represents a moiety selected from the group consisting of hydrogen, optionally substituted C_1-20 alkyl groups which can contain up to 5 heteroatoms selected from the group consisting of oxygen and sulfur, optionally substituted C_1-20 oxyalkyl groups which can contain up to 5 heteroatoms selected from the group consisting of oxygen and sulfur, or wherein R¹ and R² together represent a fused cyclic moiety selected from the group consisting of optionally substituted C_1-20 dioxyalkylene groups and C_1-20 dioxyarylene groups; and stabilized thiophene derivatives that can be prepared by such methods.