申请人:NIPPOH CHEMICALS CO., LTD.
公开号:EP0502707A1
公开(公告)日:1992-09-09
A method for the production of 3-cyano-3,5,5-trimethyl cyclohexanone by the reaction of isophorone with hydrogen cyanide in the presence of a quaternary ammonium salt or quaternary phosphonium salt and a basic compound as a catalyst in a form dissolved or dispersed in water or in the absence of water, which method comprises effecting said reaction by using said quaternary ammonium salt or quaternary phosphonium salt in an amount in the range of from 0.001 to 0.1 mol per mol of isophorone and said basic compound and in an amount in the range of from 0.5 to 3.0 mols per mol of said quaternary ammonium salt or quaternary phosphonium salt and, when water is used, using water in an amount in the range of 0.1 to 25% by weight based on the amount of isophorone, and employing hydrogen cyanidehydrocyanic acid at a ratio in the range of from 0.6 to 1.0 mol per mol of isophorone at a temperature in the range of from 90° to 140°C.
一种通过异佛尔酮与氰化氢在季铵盐或季鏻盐以及作为催化剂的碱性化合物存在下以溶解或分散于水的形式或在无水的情况下反应生产 3-氰基-3,5,5-三甲基环己酮的方法,该方法包括通过使用所述季铵盐或季鏻盐以每摩尔异佛尔酮 0.001 至 0.1 摩尔的量和所述碱性化合物以每摩尔所述季铵盐或季鏻盐 0.5 至 3.0 摩尔的量进行所述反应。1摩尔/摩尔的异佛尔酮和所述碱性化合物,以及0.5至3.0摩尔/摩尔的所述季铵盐或季鏻盐,当使用水时,使用0.当使用水时,以异佛尔酮的量为基准,水的用量为 0.1 至 25% (重量),氰化氢氰酸的用量为 0.6 至 1.0 摩尔/摩尔异佛尔酮,温度为 90° 至 140°C。