Processes and intermediates for preparing substituted chromanol derivatives

摘要

The invention relates to processes for preparing a compound of the formulaand the enantiomer of said compound, wherein the benzoic acid moiety is attached at position 6 or 7 of the chroman ring, and R1, R2, and R3 are as defined herein. The invention further relates to intermediates that are useful in the preparation of the compound of formula X above.