(2-methyl-1,3-dioxolan-2-yl)methanol

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: The same procedure as in the steps (4f) to (4j) of Example 4 (a reprecipitation operation was not performed in oxidation step with 3-chloroperbenzoic acid) was repeated using (2-methyl-1,3-dioxolan-2-yl)methanol obtained in the step (67b) above to obtain the title compound (263 mg, total 12.9% yield) as a light yellow solid. obtained in the step (67b) above

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: 100 mg of 50% sodium hydride was added to a mixture of 20 g of 2,2-ethylenedioxypropanol and 100 ml of benzene, and 20 g of diketene was added dropwise to the mixture while refluxing the mixture. After refluxing the mixture for 2 hours, the solvent was distilled off and the resulting residue was distilled under reduced pressure to obtain 21.5 g (70% yield) of 2,2-ethylenedioxypropyl acetoacetate as a colorless oil having a boiling point of 90° C. (6 mmHg). was added dropwise to the mixture while refluxing the mixture After refluxing the mixture for 2 hours the solvent was distilled off the resulting residue was distilled under reduced pressure

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: 100 mg of 50% sodium hydride was added to a mixture of 20 g of 2,2-ethylenedioxypropanol and 100 ml of benzene, and 20 g of diketene was added dropwise to the mixture while refluxing the mixture. After refluxing the mixture for 2 hours, the solvent was distilled off and the resulting residue was distilled under reduced pressure to obtain 21.5 g (70% yield) of 2,2-ethylenedioxypropyl acetoacetate as a colorless oil having a boiling point of 90° C. (6 mmHg). was added dropwise to the mixture while refluxing the mixture After refluxing the mixture for 2 hours the solvent was distilled off the resulting residue was distilled under reduced pressure

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: The same procedure as in the steps (4f) to (4j) of Example 4 (a reprecipitation operation was not performed in oxidation step with 3-chloroperbenzoic acid) was repeated using (2-methyl-1,3-dioxolan-2-yl)methanol obtained in the step (67b) above to obtain the title compound (263 mg, total 12.9% yield) as a light yellow solid. obtained in the step (67b) above

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: The same procedure as in the steps (4f) to (4j) of Example 4 (a reprecipitation operation was not performed in oxidation step with 3-chloroperbenzoic acid) was repeated using (2-methyl-1,3-dioxolan-2-yl)methanol obtained in the step (67b) above to obtain the title compound (263 mg, total 12.9% yield) as a light yellow solid. obtained in the step (67b) above

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: The same procedure as in the steps (4f) to (4j) of Example 4 (a reprecipitation operation was not performed in oxidation step with 3-chloroperbenzoic acid) was repeated using (2-methyl-1,3-dioxolan-2-yl)methanol obtained in the step (67b) above to obtain the title compound (263 mg, total 12.9% yield) as a light yellow solid. obtained in the step (67b) above

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: 100 mg of 50% sodium hydride was added to a mixture of 20 g of 2,2-ethylenedioxypropanol and 100 ml of benzene, and 20 g of diketene was added dropwise to the mixture while refluxing the mixture. After refluxing the mixture for 2 hours, the solvent was distilled off and the resulting residue was distilled under reduced pressure to obtain 21.5 g (70% yield) of 2,2-ethylenedioxypropyl acetoacetate as a colorless oil having a boiling point of 90° C. (6 mmHg). was added dropwise to the mixture while refluxing the mixture After refluxing the mixture for 2 hours the solvent was distilled off the resulting residue was distilled under reduced pressure