1: (S)-(-)-N-(2-Ethyl-6-methyl-phenyl)-alanin With sodium tetrahydroborate; sulfuric acid in tetrahydrofuran T=20°C; 2: chloroacetyl chloride With sodium carbonate in benzene T=20°C; 3 h; 3: 2,2-dimethoxy-propane With toluene-4-sulfonic acid in methanol 36 h; Heating; Title compound not separated from byproducts;
参考文献
Canadian Journal of Chemistry, , vol. 84, # 8 p. 1058 - 1063