tert-butyl 2-(benzyloxycarbonyl)acetate

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Under a nitrogen atmosphere, a mixture of carbobenzyloxyglycine methyl ester (3.0 mmol), t-butanol (3.6 mmol), a zinc cluster Zn4O (OCOCF3)6 (0.0375 mmol), and diisopropyl ether (5.0 ml) was refluxed for 18 hours. As a result, carbobenzyloxyglycine t-butyl ester was obtained in a yield of 83.8%.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Under a nitrogen atmosphere, a mixture of carbobenzyloxyglycine methyl ester (3.0 mmol), t-butanol (3.6 mmol), the zinc cluster obtained in the above-described Example 5 (0.0375 mmol), and diisopropyl ether (5.0 ml) was refluxed for 18 hours. As a result, carbobenzyloxyglycine t-butyl ester was obtained in a yield of 91.8%. was refluxed for 18 hours

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Under a nitrogen atmosphere, a mixture of carbobenzyloxyglycine methyl ester (3.0 mmol), t-butanol (3.6 mmol), the zinc cluster obtained in the above-described Example 5 (0.0375 mmol), and diisopropyl ether (5.0 ml) was refluxed for 18 hours. As a result, carbobenzyloxyglycine t-butyl ester was obtained in a yield of 91.8%. was refluxed for 18 hours

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Under a nitrogen atmosphere, a mixture of carbobenzyloxyglycine methyl ester (3.0 mmol), t-butanol (3.6 mmol), a zinc cluster Zn4O (OCOCF3)6 (0.0375 mmol), and diisopropyl ether (5.0 ml) was refluxed for 18 hours. As a result, carbobenzyloxyglycine t-butyl ester was obtained in a yield of 83.8%.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Under a nitrogen atmosphere, a mixture of carbobenzyloxyglycine methyl ester (3.0 mmol), t-butanol (3.6 mmol), the zinc cluster obtained in the above-described Example 5 (0.0375 mmol), and diisopropyl ether (5.0 ml) was refluxed for 18 hours. As a result, carbobenzyloxyglycine t-butyl ester was obtained in a yield of 91.8%. was refluxed for 18 hours