Processes for producing benzophenone derivatives

摘要

There is provided a process for the preparation of a compound of formula I,;
wherein X, R1, R2a, R2b, R2c, R2d, R2e, R3a, R3b, R3c, R3d and R3e are as described in the description. Such compounds may, for example, be useful medicament (or intermediates for medicaments).

主权项

1. A process for the preparation of a compound of formula I, wherein: X represents halo or —OH; R1 represents H or C1-6 alkyl optionally substituted by one or more —OH group; each R2a, R2b, R2c, R2d, R2e, R3a, R3b, R3c, R3d and R3e independently represent H or —OH; which process comprises reaction of a compound of formula II, wherein R1 and R3a, R3b, R3c, R3d and R3e are as defined above, with a compound of formula III, wherein X and R2a, R2b, R2c, R2d and R2e are as defined above.