CENTRE NATIONAL DE LA RECHERCHE SCIENTIFOQUE (C.N.; UNIVERSITE PAUL SABATIER TOULOUSE III
Patent: US2011/92536 A1, 2011 ;
Location in patent: Page/Page column 8-9 ;
1: acetic acid With 1,1'-carbonyldiimidazole in dichloromethane T=0 - 23°C; 2: O,N-dimethyl-hydroxylamine hydrochloride With triethylamine in dichloromethane T=0°C; 2 h;