申请人:STAMICARBON B.V.
公开号:EP0196708A1
公开(公告)日:1986-10-08
The invention relates to a process for the preparation of 2-(hydroxyalkyl)acrylic compounds having the formula
wherein X represents a -CN group, a -COOR3 group, a - COR4 group or a -CONR4R5 group wherein R3 is an alkyl group containing 1-4 C atoms and R4 and Rs independently represent an H atom or R3, and wherein R, and R, independently represent an H atom or an alkyl group with 1-4 C atoms or an (hetero) aryl group, or R, and R2 together represent a cyclic compound with 5-12 C atoms by contacting an acrylic compound H2C = CH -X with a carbonyl compound of the formula
wherein X, R, and R2 denote the same as in the above, this being effected in the liquid phase in the presence of a tertiary amine, characterized in that the reaction is carried out at a pressure in excess of 500 bar, advantageously 1,500-18,000 bar.
本发明涉及一种制备 2-(羟基烷基)丙烯酸化合物的工艺,其式为
其中 X 代表-CN 基团、-COR3 基团、-COR4 基团或-CONR4R5 基团,其中 R3 是含有 1-4 个 C 原子的烷基,R4 和 Rs 独立地代表 H 原子或 R3,R 和 R 独立地代表 H 原子或含有 1-4 个 C 原子的烷基或(杂)芳基,或 R 和 R2 一起代表含有 5-12 个 C 原子的环状化合物。
其中 X、R 和 R2 表示与上述相同,在液相中在叔胺存在下进行,其特征在于反应是在超过 500 巴的压力下进行的,最好是 1,500-18,000 巴。