Honeywell International Inc.

Allied Corporation

Ralph John Borowski

Hsueh Sung Tung

Haiyou Wang

David Nalewajek

Yian Zhai

Willie Perez

David S Soriano

John L Welch

Fang Huang Tu

Lucas Peter Labuda

Willie Josue Perez

The invention relates to a process for reducing the concentration of a fluorinated alkyne impurity, such as 3,3,3-trifluoropropyne (TFPY), in 2,3,3,3-tetrafluoropropene (HFO-1234yf) which comprises contacting such a mixture with a caustic material, such as sodium hydroxide (NaOH), under conditions effective to reduce the concentration of the fluorinated alkyne impurity, including in some practices reducing the concentration by at least about 50%.

Process for reducing 3,3,3-trifluoropropyne in 2,3,3,3-tetrafluoropropene

Allylphosphonate diesters are converted to vinyl phosphonate diesters by isomerization with a catalytic amount of a ruthenium catalyst. Vinyl phosphonate derivatives are produced directly from an organo pentavalent phosphorus compound. In a particular reaction conversion of allylic phosphonate diesters to vinylic phosphonate diesters is accomplished by the transition metal mediated isomerization of the alkylphosphonate derivatives with tetrakis(triphenylphosphine)dihydrido ruthenium(II).

Preparation of vinylphosphonate diesters

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Depew, NY, United States of America

Ralph John Borowski