A facile protocol for the convenient preparation of amino-substituted α-bromo- and α,α-dibromo arylmethylketones
摘要:
Amino-substituted arylmethylketones are selectively brominated in sulfuric acid to afford the corresponding dibromomethylarylketones that are then debrominated with diethylphosphite to give the desired bromomethylarylketones in excellent yield. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
The present invention relates to compounds of formula (I)
1
wherein R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, m and X are as defined in the description and claims, and pharmaceutically acceptable salts thereof. The compounds are useful for the treatment and/or prophylaxis of diseases which are associated with the modulation of CB1 receptors.