4-哌啶乙酸叔丁酯草酸盐

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The same procedure as in Example 2-(6-2) was performed with N-4-cyanobenzoyl-β-phenyl-α,α-dimethyl-β-alanine (0.5 g, 1.55 mmol) using t-butyl 4-piperidine acetate (0.93 g, 4.66 mmol) to yield an oil of N-4-cyanobenzoyl-β-phenylα,α-dimethyl-β-alanyl-4-piperidineacetic acid t-butyl ester (470 mg, 60.2%).

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The same procedure as in Example 2-(6-2) was performed with N-4-cyanobenzoyl-β-styryl-α,α-dimethyl-β-alanine (100 mg, 0.287 mmol) using 4-piperidineacetic acid t-butyl ester (203 mg, 0.86 mmol) to yield an oil of N-4-cyanobenzoyl-β-styryl-α,α-dimethyl-β-alanyl-4-piperidineacetic acid t-butyl ester (46 mg, 30.3%).

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The same procedure as in Example 2-(6-2) was performed with N-4-cyanobenzoyl-β-phenyl-α,α-dimethyl-β-alanine (0.5 g, 1.55 mmol) using t-butyl 4-piperidine acetate (0.93 g, 4.66 mmol) to yield an oil of N-4-cyanobenzoyl-β-phenylα,α-dimethyl-β-alanyl-4-piperidineacetic acid t-butyl ester (470 mg, 60.2%).

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The same procedure as in Example 2-(6-2) was performed with N-4-cyanobenzoyl-β-phenyl-α,α-dimethyl-β-alanine (0.5 g, 1.55 mmol) using t-butyl 4-piperidine acetate (0.93 g, 4.66 mmol) to yield an oil of N-4-cyanobenzoyl-β-phenylα,α-dimethyl-β-alanyl-4-piperidineacetic acid t-butyl ester (470 mg, 60.2%).

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The same procedure as in Example 2-(6-2) was performed with N-4-cyanobenzoyl-β-styryl-α,α-dimethyl-β-alanine (100 mg, 0.287 mmol) using 4-piperidineacetic acid t-butyl ester (203 mg, 0.86 mmol) to yield an oil of N-4-cyanobenzoyl-β-styryl-α,α-dimethyl-β-alanyl-4-piperidineacetic acid t-butyl ester (46 mg, 30.3%).

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of piperidin-4-ylacetic acid tert-butyl ester (10.72 g, 50.0 mmol) in chloroform (100 ml) was added to a solution of 9-fluorenylmethoxycarbonyl isothiocyanate (14.07 g, 50.0 mmol) in chloroform (100 ml) and the mixture was stirred at room temperature for 1 hour. Then, piperidine (80 ml) was added and the mixture was stirred at room temperature for 30 minutes. After the reaction solution was concentrated, water was added, and it was extracted with ethyl acetate and washed with a saturated brine. The organic layer was dried over magnesium sulfate and the residue obtained by vacuum concentration was washed with isopropyl ether and the title compound was obtained (11.35 g, 98%). the mixture was stirred at room temperature for 30 minutes After the reaction solution was concentrated water was added it was extracted with ethyl acetate washed with a saturated brine The organic layer was dried over magnesium sulfate the residue obtained by vacuum concentration was washed with isopropyl ether

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The same procedure as in Example 2-(6-2) was performed with N-4-cyanobenzoyl-β-phenyl-α,α-dimethyl-β-alanine (0.5 g, 1.55 mmol) using t-butyl 4-piperidine acetate (0.93 g, 4.66 mmol) to yield an oil of N-4-cyanobenzoyl-β-phenylα,α-dimethyl-β-alanyl-4-piperidineacetic acid t-butyl ester (470 mg, 60.2%).

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The same procedure as in Example 2-(6-2) was performed with N-4-cyanobenzoyl-β-styryl-α,α-dimethyl-β-alanine (100 mg, 0.287 mmol) using 4-piperidineacetic acid t-butyl ester (203 mg, 0.86 mmol) to yield an oil of N-4-cyanobenzoyl-β-styryl-α,α-dimethyl-β-alanyl-4-piperidineacetic acid t-butyl ester (46 mg, 30.3%).