(-)-(S)-β-Np-BTM; trimethylacetic anhydride; N-ethyl-N,N-diisopropylamine in dichloromethane T=20°C; 12 h; Inert atmosphereResolution of racemate; optical yield given as percent eeenantioselective reaction;
1: With (R)-BINOL-SnCl4 in dichloromethane; toluene T=-78°C; enantioselective protonation; 1 h; 2: With hydrogenchloride in dichloromethane; toluene Hydrolysis; Further stages. Title compound not separated from byproducts.;
参考文献
Nakamura, Shingo; Kaneeda, Masanobu; Ishihara, Kazuaki; Yamamoto, Hisashi
Journal of the American Chemical Society, 2000 , vol. 122, # 34 p. 8120 - 8130