Patent ID: 7875724
Filing Date: 2011-01-25
Classification: C07D,C07F

Abstract:
1. A method of making a compound of Formula III: wherein: R R A is a 1, 2 or 3 atom bridging species which forms part of a saturated or monounsaturated 5-, 6- or 7-membered ring including N B is selected from —O—, —S—, —NR R comprising oxidizing a compound of Formula II: wherein A, B, R 2 , R 5 , R 6 , R 7 , R 9 , and R 9a are as given above and R 4 is SiR 20 R 21 R 22 , wherein R 20 , R 21 and R 22 are each independently selected from the group consisting of alkyl, alkenyl, alkynyl and aryl, in a polar protic solvent to produce a compound of Formula III.