Stable vinamidinium salts and nitrogen-containing heterocycle synthesis using them

摘要

It can be used as a general-purpose reagent useful for the synthesis of various nitrogen-containing heteroaromatic rings having a substituent, and is excellent in storage stability and reaction selectivity. [Wherein R1 is a hydrogen atom, halogen atom, substituent] R2 and R3 may be the same or different and each represents a lower alkyl group, or R2 and R3 may be combined to form a ring, and R4 and R5 may be R 4 and R 5 may be combined to form a ring, X and Y are the same or different, and each represents a bromine atom or a chlorine atom, and n is 2 or more. And m represents 0 to n], and a method for synthesizing a nitrogen-containing heteroaromatic compound using the same.