CYCLIZATION CATALYST, METHOD OF PRODUCING CHROMAN, METHOD OF PRODUCING PYRROLIDINE AND PHOSPHORIC DIESTER AMIDE

摘要

PROBLEM TO BE SOLVED: To provide a catalyst suitable for iodoether cyclization reaction or iodoamino cyclization reaction.SOLUTION: According to one embodiment of the present invention, when producing corresponding chroman from 2-(3-methyl-3-butenyl) phenol by iodoether cyclization reaction, iodine (I) as iodization agent, haloimide or halohydantoin as Lewis acid (where halogen atom is chlorine atom, bromine atom or iodine atom), and phosphoric diester amide as catalyst are used.SELECTED DRAWING: None