反应详情

A solution of (2S,3′R)-2-methyl-[1,3′]bipyrrolidinyl-1′-carboxylic acid tert-butyl ester (Intermediate (xiii)) (2.51 g, 9.87 mmol) in 1,4-dioxane (9 mL) was chilled to 0° C. and then added 4N HCl in dioxane (6 mL) and allowed to stir for 20 h at ambient temperature. Then the reaction mixture was concentrated to obtain an oil which was dried under high vacuum to afford 2.29 g of the title compound.

1. concentrationThen the reaction mixture was concentrated
2. customto obtain an oil which
3. customwas dried under high vacuum