methyl 2-chloro-2-methoxyacetate

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: A mixture of methyl 2-chloro-2-methoxyacetate (13.86 g., 0.1 mole), powdered sodium azide (8.46 g., 0.13 mole) and dry dimethoxyethane (80ml.) is stirred and heated at reflux for 39 hours. After cooling to room temperature, the mixture is filtered to remove salts which are washed with dry ether. Evaporation of the solvents at aspirator pressure leaves a yellow liquid which is distilled to give methyl 2-azido-2-methoxyacetate (10.5 g.) as a water-white liquid (b.p. 75°-77°C./17 mm.). heated at reflux for 39 hours the mixture is filtered to remove salts which are washed with dry ether Evaporation of the solvents at aspirator pressure leaves a yellow liquid which is distilled