Trifluoro-acetic acid; compound with (R)-3-amino-dihydro-furan-2-one 在
N,N-二异丙基乙胺 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
生成 tert-butyl methyl((S)-4-methyl-1-oxo-1-(((R)-2-oxotetrahydrofuran-3-yl)amino)pentan-2-yl)carbamate