Patent Number: 6,294,687

Title: Process for the preparation of saturated carboxylic acids and their esters

Abstract: The present invention discloses this invention relates to a process for theconversion of olefinically unsaturated compounds to correspondingcarboxylic acids and their esters of formula III##STR1##wherein R.sub.1, R.sub.2, R.sub.3 and R4 may independently be hydrogen,alkyl, aryl, arylalkyl, cycloaliphatic with or without substituents, R andR.sub.5 may be H and COOR' or vice versa wherein R' may be H in the caseof acids and may be alkyl, aryl, arylalkyl, cycloaliphatic with or withoutsubstituents, in the case of esters, wherein said conversion is carriedout in the presence of a transition metal complex catalyst of the formula.a transition metal complex catalyst of the formula I##STR2##wherein M is a group VIII metal, R.sub.1, R.sub.2, and R.sub.3 aresubstituents on the phosphine ligand and are selected from hydrogen,alkyl, aryl, arylalkyl arylalkyl cycloaliphatic, X is selected from arylor alkyl sulphonato or aryl or alkyl carbonato or formato or halidesselected from Cl.sup.-, Br.sup.- or I.sup.- ; NO is a semilabile anionicchelating ligand containing a N donor and an O.sup.- group, 1<n<10, and aprotonic acid (or hydrogen gas) and a proton source, in an organicsolvent, in a carbon monoxide atmosphere in a homogeneous medium, with orwithout excess phosphorus ligand.

Inventors: Chaudhari; Raghunath Vitthal (Maharashtra, IN), Seayad; A. (Maharashtra, IN), Seayad; Jayasree (Maharashtra, IN)


International Classification:

Expiration Date: 09/25/2013