Novel metal-free Lewis acid catalysis by phosphonium salts through hypervalent interaction
作者:Masahiro Terada、Mitsuhiro Kouchi
DOI:10.1016/j.tet.2005.09.075
日期:2006.1
Phosphonium salts as a novel metal-free Lewis acid catalyst can be considered as organocatalysts. The introduction of a five-membered dioxaphosphacycle to the phosphonium salt is critical to its function as a Lewis acid catalyst for the Diels-Alder reaction. The key to the successful catalysis by the phosphonium salt is the utilization of hypervalent bonding as a strategic interaction for the generation of an active species. (c) 2005 Elsevier Ltd. All rights reserved.
Gloede, J.; Hauser, A.; Ramm, M., Phosphorus, Sulfur and Silicon and the Related Elements, 1992, vol. 66, # 14, p. 245 - 250
作者:Gloede, J.、Hauser, A.、Ramm, M.
DOI:——
日期:——
DHAWAN, BALRAM;REDMORE, DEREK, J. CHEM. RES. SYNOP.,(1988) N 7, 222-223
作者:DHAWAN, BALRAM、REDMORE, DEREK
DOI:——
日期:——
Cyclic-acyclic equilibrium and selective P-O bond cleavage in 2-hydro×yphenyldiphenyl-phosphinate, Ph<sub>2</sub>P(O)OC<sub>6</sub>H<sub>4</sub>OH
作者:Edward Paul Segstro、Kerry Davie、Xiaoling Huang、Ale×ander Frank Janzen