Abstract: An objective of the present invention is to provide methods of producing a cyclic organic compound using a continuous stirred tank reactor(s) (CSTR), the methods being capable of achieving excellent impurity-suppressing effects (quality improvement), reduction in reaction-tank size, continuous production, and such. The present inventors conducted studies on cyclization reactions using a CSTR(s), which had not been conventionally used for cyclization reactions for cyclic compounds. As a result, the inventors have found that the present methods can achieve excellent impurity-suppressing effects (quality improvement), reduction in reaction-tank size, continuous production, and such, as compared with conventional cyclization methods.

Abstract: An objective of the present invention is to provide methods of producing a cyclic organic compound using a continuous stirred tank reactor(s) (CSTR), the methods being capable of achieving excellent impurity-suppressing effects (quality improvement), reduction in reaction-tank size, continuous production, and such. The present inventors conducted studies on cyclization reactions using a CSTR(s), which had not been conventionally used for cyclization reactions for cyclic compounds. As a result, the inventors have found that the present methods can achieve excellent impurity-suppressing effects (quality improvement), reduction in reaction-tank size, continuous production, and such, as compared with conventional cyclization methods.