Dimethylcarbamoyl Chloride → 2-Ethoxy-2-methyl-2H-1,3-benzodioxol-4-yl dimethylcarbamate

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Reaction Steps

2-Ethoxy-2-methyl-4-hydroxy-1,3-benzodioxole, prepared as in Example 1, (10g) was dissolved in dry acetone (100 ml). Dimethylcarbamoylchloride (8g) and potassium carbonate (12g) were added and the mixture stirred and heated under reflux for six hours. The mixture was then filtered and the solvent evaporated from the filtrate under reduced pressure. Distillation of the residue gave 2-ethoxy-2-methyl-1,3-benzodioxol-4-yl dimethylcarbamate (9.5g, 77% yield), boiling oint 120°-124° C/0.3 mmHg.

Provenance & Evidence