2-甲氧基-1,3-苯并二氧戊环-4-醇

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

实验步骤: A mixture of pyrogallol (25 parts), trimethyl orthoformate (32 parts) and 1,2-dichloroethane (250 parts) was heated with continuous distillation of the solvent for 4 hours. The volume of solvent was kept constant by simultaneous addition of dichloroethane. The mixture was then washed three times with water and dried over sodium sulphate. Removal of the solvent under reduced pressure and distillation of the residue gave 4-hydroxy-2-methoxy-1,3-benzodioxole, boiling point 104°-105° C/1 mmHg. was heated with continuous distillation of the solvent for 4 hours The mixture was then washed three times with water dried over sodium sulphate Removal of the solvent under reduced pressure and distillation of the residue

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

实验步骤: A mixture of pyrogallol (25 parts), trimethyl orthoformate (32 parts) and 1,2-dichloroethane (250 parts) was heated with continuous distillation of the solvent for 4 hours. The volume of solvent was kept constant by simultaneous addition of dichloroethane. The mixture was then washed three times with water and dried over sodium sulphate. Removal of the solvent under reduced pressure and distillation of the residue gave 4-hydroxy-2-methoxy-1,3-benzodioxole, boiling point 104°-105° C/1 mmHg. was heated with continuous distillation of the solvent for 4 hours The mixture was then washed three times with water dried over sodium sulphate Removal of the solvent under reduced pressure and distillation of the residue

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

实验步骤: A mixture of pyrogallol (25 parts), trimethyl orthoformate (32 parts) and 1,2-dichloroethane (250 parts) was heated with continuous distillation of the solvent for 4 hours. The volume of solvent was kept constant by simultaneous addition of dichloroethane. The mixture was then washed three times with water and dried over sodium sulphate. Removal of the solvent under reduced pressure and distillation of the residue gave 4-hydroxy-2-methoxy-1,3-benzodioxole, boiling point 104°-105° C/1 mmHg. was heated with continuous distillation of the solvent for 4 hours The mixture was then washed three times with water dried over sodium sulphate Removal of the solvent under reduced pressure and distillation of the residue