摘要 |
PURPOSE: Provided is a process for preparing the C5 acetate for Vitamin A synthesis to improve the space-time yield of the hydroformylation reaction of 3,4-DABE to give C5 acetate and thus to improve the economic efficiency of the process. CONSTITUTION: A process for preparing C5 acetate for Vitamin A synthesis by hydroformylation of 3,4-diacetoxybut-1-ene, (3,4-DABE), comprises using a 3,4-DABE-containing stream which is obtained by acetoxylation of 1,3-butadiene with acetic acid and air in the presence of a catalyst and removing by distillation the 3,4-DABE formed in this case as by-product.
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