反应 #3762652
相关文献 (1)
openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US08105746B2
反应条件: temp:115.01; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: A distillation column-provided four-necked flask having a volume of one liter, which was equipped with a dropping funnel, a thermometer, a stirring device and a reflux ratio regulator, was charged with 250 g (1.922 moles) of 1-vinyl-1-cyclohexanol, 415.6 g (3.843 moles) of trimethyl orthoacetate and 1.4 g (0.019 moles) of propionic acid, and the internal temperature was raised to 115° C. Heating was continued for 12 hours while removing a fraction of not higher than 65° C. from a column top of the distillation column. After confirming the disappearance of 1-vinyl-1-cyclohexanol by a gas chromatographic analysis of the reaction solution, the reaction solution was distilled in vacuo. Fractions of from 120 to 130° C./1.2 kPa were collected to obtain 301.2 g (1.653 moles) of methyl 4-cyclohexylidenebutanoate. The yield was 86.0%. A distillation column-provided four-necked flask was equipped with a dropping funnel Heating while removing a fraction of not higher than 65° C. from a column top of the distillation column the reaction solution was distilled in vacuo Fractions of from 120 to 130° C./1.2 kPa were collected
来源 ID: ord-1d5a592ca6c24a0fa0bb8a3ac32f53db