Patent ID: 9440891
Filing Date: 2016-09-13
CPC Classification: C07C

Claim Text:
1. A method for forming an olefin product via decarbonylative dehydration of carboxylic acids or carboxylic acid anhydrides, said method comprising contacting: (a) a precursor carboxylic acid anhydride; (b) a palladium catalyst comprising a bidentate bis-phosphine ligand; and (c) an organic acid selected from the group consisting of substituted benzoic acids and substituted phenols; said contacting done in a reaction mixture under conditions to form an olefin product with the concomitant formation and removal of CO and water from the reaction mixture; wherein the bidentate bis-phosphine ligand comprises a structure of Formulae (I), (II), or (III); wherein (i) Z is —O—; —S—; methylene; —C(R) (ii) each R is independently at each occurrence H, lower alkyl, aryl, or aralkyl; and (iii) X is independently at each occurrence H, F, Cl, C