1: With N-ethyl-N,N-diisopropylamine in dichloromethane
T=20°C; 2.5 h; Inert atmosphere;
2: With trimethylsilyl trifluoromethanesulfonate in acetonitrile
T=0 - 20°C;
Rioz-Martinez, Ana; Kopacz, Malgorzata; De Gonzalo, Gonzalo; Torres Pazmino, Daniel E.; Gotor, Vicente; Fraaije, Marco W.
Organic and Biomolecular Chemistry, 2011 , vol. 9, # 5 p. 1337 - 1341