Heterofunctionalised phosphites built on a calix[4]arene scaffold and their use in 1-octene hydroformylation. Formation of 12-membered P,O-chelate rings
Facile synthetic route to cone-shaped phosphorylated [CH2P(O)Ph2] calix[4]arenes
作者:Cedric Dieleman、Cyrille Loeber、Dominique Matt、Andr� De Cian、Jean Fischer
DOI:10.1039/dt9950003097
日期:——
Selective incorporation of one, two or four CH2P(O)Ph(2) substituents at specific sites in para-tert-butylcalix[4]arene was achieved using NaH and an appropriate alkylating agent; the tetrasubstituted compound (structure established by X-ray crystallography) was quantitatively reduced to the corresponding tetraphosphine L(6) which, by reaction with [Pd(C(6)H(4)CH(2)NMe(2)-o)Cl}(2)], gave access to the tetranuclear complex [Pd(C(6)H(4)CH(2)NMe(2)-o)Cl}(4)L(6)].
Arranging phosphoryl ligands on a calixarene platform
作者:Cedric B. Dieleman、Dominique Matt、Peter G. Jones
DOI:10.1016/s0022-328x(97)00365-3
日期:1997.1
Cone calix[il]arenes substituted at the lower rim by one to four -CH(2)P(O)Ph(2) functionalities have been prepared in moderate to excellent yield, either directly from p-tert-butylcalix[4]arene or piecewise from calix[4]arenes containing easily removable protecting groups. The X-ray structure of a calix[4]arene-derived tris-(phosphine oxide) is presented. (C) 1997 Elsevier Science S.A.