Syntheses of Phosphonium Salts from Phosphines and Carbenium: Efficient CO2 Fixation and Phase‐Transfer Catalysts. Issue 17 (28th April 2020)

• Record Type: Journal Article
• Authors: Shaikh, Aslam C.; Veleta, José M.; Bloch, Jan; Goodman, Hannah J.; Gianetti, Thomas L.
• Is Part Of: European journal of organic chemistry. Issue 17(2020)
• Page Start: 2553
• Page End: 2559
• Publication Date: 2020-04-28
• Subjects: Triarylcarbenium -- Phosphonium -- Bifunctional catalyst -- CO2 fixation -- Phase‐transfer catalysis; Chemistry, Organic -- Periodicals; Organic compounds -- Synthesis -- Periodicals; Bioorganic chemistry -- Periodicals; Chemistry, Physical organic -- Periodicals; 547
• DOI: 10.1002/ejoc.202000221
• Languages: English
• ISSNs: 1434-193X

Abstract

Abstract : A new library of phosphonium salts has been synthesized from the reaction of tris‐(2, 6‐dimethoxyphenyl)carbenium with different phosphines. The resultant phosphoninum salts work as efficient phase‐transfer catalysts for the alkylation of 1, 3‐dicarbonyl compounds. One compound, a bifunctional phosphonium salt prepared from tris‐(2, 6‐dimethoxyphenyl)carbenium and an aminophosphine, was also found to be an efficient catalyst for CO2 fixation reactions with epoxides under mild conditions. Abstract : A new library of phosphonium salts has been synthesized from the reaction of tris‐(2, 6‐dimethoxyphenyl)carbenium with different phosphines. All these phosphoninum salts were efficient phase‐transfer catalysts for alkylation of 1, 3 dicarbonyl compounds. One compound, a bifunctional phosphonium salt, prepared from tris‐(2, 6‐dimethoxyphenyl)carbenium and an aminophosphine, was found to be an efficient catalyst for CO2 fixation reactions with epoxides under mild conditions.