Process for producing 1,3-oxazolidine derivatives

A process for producing 1,3-oxazolidine derivatives, said process comprising:

• reacting an imine derivative of the following formula (1):
• wherein R1 and R2 are each, identical to or different from each other, a hydrogen atom, a hydrocarbon group or a heterocyclic group, where R1 and R2 are optionally combined to form a ring with the adjacent carbon atom, R3 is a hydrogen atom, a hydrocarbon group, a heterocyclic group, a hydroxyl group, a substituted oxy group, or an amino group which may have a substituent, with an epoxy compound of the following formula (2):
• wherein R4, R5, R6, and R7 are each, identical to or different from one another, a hydrogen atom, a hydrocarbon group or a heterocyclic group, where each combination of R4 and R5, R6 and R7, or R4 and R6 may be combined to form a ring with the adjacent carbon atom or the adjacent carbon-carbon bond, in the presence of a metallic compound catalyst comprising a compound of a Group 3 element of the Periodic Table of Elements to yield an oxazolidine derivative of the following formula (3):
• wherein R1, R2, R3, R4, R5, R6, and R7 have the same meanings as defined above.