This invention discloses a process and accompanying catalyst for the preparation of glycol aldehyde from the reaction of formaldehyde, carbon monoxide and hydrogen in the presence of a rhodium phosphine amide catalyst having the formula:
wherein M is a metal selected from the group of rhodium, cobalt, ruthenium and mixtures thereof.
X is an anion selected from the class of halides, psuedohalides, hydrides, and deprotonated strong carboxylic acids;
P is phosphorous;
R1 is an aliphatic or aromatic group containing from 1-20 carbon atoms;
R2 is an aliphatic or aromatic group containing from 0-20, carbon atoms and may further comprise oxygen, nitrogen and/or sulfur atoms which may also be directly bonded to the amide C(O)N carbon or nitrogen;
R3 and R. are aliphatic or aromatic groups containing from 1-50 carbon atoms;
x ranges from 0 to 3, y ranges from 1 to 5, and z from 1 to 4;
the resultant compound further characterized by the absence of hydrogen on the amide nitrogen atom and the additional limitationthat if R2 is bonded to the amide nitrogen, then either R3 or R. is bonded to the amide carbon.
本发明公开了一种由
甲醛、
一氧化碳和
氢气在
铑膦酰胺催化剂存在下反应制备
乙二醇醛的工艺和配套催化剂,该催化剂具有以下式子:
其中 M 是选自
铑、
钴、
钌及其混合物组的
金属。
X 是选自卤化物、次卤化物、
氢化物和去质子化强
羧酸类的阴离子;
P 是
磷;
R1 是含有 1-20 个碳原子的脂肪族或芳香族基团;
R2 是脂肪族或芳香族基团,含 0-20 个碳原子,可进一步包括氧、氮和/或
硫原子,这些原子也可直接键合到酰胺 C(O)N 碳或氮上;
R3和R.是含1-50个碳原子的脂肪族或芳香族基团;
x 为 0 至 3,y 为 1 至 5,z 为 1 至 4;
所得化合物的进一步特征是酰胺氮原子上不含氢,以及附加的限制条件:如果 R2 与酰胺氮键合,则 R3 或 R. 与酰胺碳键合。