22330-25-2Relevant academic research and scientific papers
Homogeneous Isomerization of 1-Butene Catalyzed by -NaBH4 Systems (M=Co, Ni, X=Halides, SCN, PR3=PPhnEt3-n) - Acceleration by Phosphine Addition and Stereoselectivity
Kanai, Hiroyoshi,Sakai, Shigeyoshi,Sakatani, Takenobu
, p. 1589 - 1594 (2007/10/02)
The stoichiometric or a little excess amount of NaBH4 was treated with (M=Co, Ni, X=halides, SCN, PR3=PPhnEt3-n) in THF-1,2-dimethoxyethane to form monohydride species which were active for isomerization of 1-butene.The reaction was accelerated by excess PPh3 in -NaBH4 systems.Other catalytic systems have optimum ratios of excess phosphine to metal for getting maximum activities.Thiocyanate-metal complexes are the most active in each Co- and Ni-catalyst system.Cis-selectivity depends on the cone angle of PR3, the size of anion ligands, and the congested structure of the complexes.
