申请人:Shell Oil Company
公开号:US04249015A1
公开(公告)日:1981-02-03
Carboxylic acids and/or esters are prepared by converting the ##STR1## moiety in a 1-substituted 2,2-trihaloethanol, or derivative wherein X represents halogen and R is hydrogen or an acyl group to an organic acid and/or ester grouping of the formula ##STR2## wherein R' is hydrogen or alkyl of 1 to 6 carbon atoms, in the process which comprises reacting the 1-substituted 2,2,2-trihaloethanol or acylated derivative with molecular oxygen in the presence of a catalyst comprising a complex of a transition metal having an atomic number from 21-30, 39-48 or 57-80 and at least one molecule of a ligand containing trivalent nitrogen, phosphorus, arsenic or antimony. This reaction is carried out in a reaction medium comprising an alcohol or aqueous alcohol having 1 to 6 carbon atoms optionally containing an alkali metal, said alcoholic solvent also serving as a reactant source when carboxylic acid esters are formed.
通过将1-取代的2,2-三卤乙醇中的##STR1##基团或其中X代表卤素、R代表氢或酰基的衍生物转化为具有##STR2##式的有机酸和/或酯基团,制备羧酸和/或酯。该过程包括将1-取代的2,2,2-三卤乙醇或酰化衍生物与分子氧在存在由具有21-30、39-48或57-80原子序数的过渡金属的络合物以及至少一分子含三价氮、磷、砷或锑的配体的催化剂反应。这种反应在包含1到6个碳原子的醇或含有碱金属的醇性溶剂构成的反应介质中进行,当制备羧酸酯时,该醇性溶剂也作为反应源。