Method for producing fluorinated organic compounds

US8071825B2 · kind B2 · utility

Assignee

• HONEYWELL INTERNATIONAL INC. · US

Inventors

• Robert C. Johnson · Lancaster, US
• Hsueh Sung Tung · Getzville, US
• Daniel C. Merkel · West Seneca, US

Key dates

• Filing date: Aug 1, 2008
• Grant date: Dec 6, 2011
• Expiry date: Nov 2, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C21/18
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Disclosed are processes for the production of fluorinated olefins, preferably adapted to commercialization of CF3CF═CH2 (1234yf). In certain preferred embodiments the processes comprise first exposing a compound of Formula (IA)C(X)2═CClC(X)3  (IA)where each X is independently F, Cl or H, preferably CCl2═CClCH2Cl, to one or more sets of reaction conditions, but preferably a substantially single set of reaction conditions, effective to produce at least one chlorofluoropropane, preferably in accordance with Formula (IB):CF3CClX′C(X′)3  Formula (IB)where each X′ is independently F, Cl or H, and then exposing the compound of Formula (IB) to one or more sets of reaction conditions, but preferably a substantially single set of reaction conditions, effective to produce a compound of Formula (II)CF3CF═CHZ  (II)where Z is H, F, Cl, I or Br.