申请人:Phillips Petroleum Company
公开号:US04579977A1
公开(公告)日:1986-04-01
Process for the conversion of organic halides to organic aldehydes is provided wherein a mixture consisting essentially of organic halide and dimethyl sulfoxide is first heated to a temperature of about 40.degree.-100.degree. C. for a time in the range of about 0.1-12 hours, then sodium bicarbonate is added and thereafter the resulting mixture further heated to a temperature in the range of about 90.degree.-180.degree. C. for an additional time in the range of about 0.1-12 hours. In a specific embodiment of the invention, a cosolvent selected from the group consisting of dimethylphthalate, triglyme and caprolactone is added along with the sodium bicarbonate prior to the second heating step. In another specific embodiment of the invention, the second heating step is carried out under reduced pressure conditions. The formation of alcohol by-product is greatly reduced in the practice of the present invention. Thus higher yields and easier recovery of the desired aldehyde product are achieved.
提供了一种将有机卤化物转化为有机醛的过程,其中首先将由有机卤化物和二甲基亚砜组成的混合物加热到约40℃-100℃的温度,在约0.1-12小时的时间范围内,然后加入碳酸氢钠,然后将所得混合物进一步加热到约90℃-180℃的温度,在约0.1-12小时的时间范围内。在该发明的具体实施方式中,在第二次加热步骤之前,还加入了从邻苯二甲酸二甲酯、三乙二醇甲醚和己内酯等组成的共溶剂中选出的一种,以及碳酸氢钠。在该发明的另一种具体实施方式中,第二次加热步骤在减压条件下进行。在实践本发明时,醇副产物的形成大大减少。因此,实现了更高的产量和更容易回收所需的醛产品。