US 12,172,958 B2
Synthesis of N-vinyl compounds by reacting NH-compounds with acetylene in presence of homogeneous phosphine catalyst
Thomas Schaub, Ludwigshafen (DE); Pavel Tuzina, Ludwigshafen (DE); Frank Bienewald, Ludwigshafen (DE); Maximilian Menche, Ludwigshafen (DE); Nikolai Amadeus Sitte, Heidelberg (DE); and A. Stephen K. Hashmi, Heidelberg (DE)
Assigned to BASF SE, Ludwigshafen am Rhein (DE)
Appl. No. 18/561,835
Filed by BASF SE, Ludwigshafen Am Rhein (DE)
PCT Filed May 10, 2022, PCT No. PCT/EP2022/062554
§ 371(c)(1), (2) Date Nov. 17, 2023,
PCT Pub. No. WO2022/243097, PCT Pub. Date Nov. 24, 2022.
Claims priority of application No. 21174651 (EP), filed on May 19, 2021.
Prior Publication US 2024/0270690 A1, Aug. 15, 2024
Int. Cl. C07D 207/267 (2006.01); C07D 263/20 (2006.01)
CPC C07D 207/267 (2013.01) [C07D 263/20 (2013.01)] 7 Claims
 
1. A process for producing an N-vinyl compound by homogeneous catalysis, the process comprising:
reacting acetylene with a compound having at least one nitrogen bearing a substitutable hydrogen residue in a liquid phase in the presence of
one phosphine as a catalyst,
either a solvent selected from the group consisting of linear ethers, cyclic ethers, linear amides, cyclic amides, sulfoxides, nitriles, and halogenated hydrocarbons, or without a solvent, and
no metal atom or ion binding the phosphine as a ligand.