Phospinite-imidazolines and metal complexes thereof

Details Phospinite-imidazolines and metal complexes thereof Phospinite-imidazolines and metal complexes thereof

Category

C - Chemistry, Metallurgy

Subcategory

07

Subsubcategory

F

IPC codes

C07F 9/6506 (2006.01) C07C 251/00 (2006.01)

Type

Patent

Patent number

CA 2536869

Description

Compounds of the formulae (I) and (Ia) where X1 is secondary phosphino; R3 is a hydrocarbon radical having from 1 to 20 C atoms, a heterohydrocarbon radical which has from 2 to 20 atoms and at least one heteroatorn selected from the group consisting of 0, S, NH and NR, or an -S02-R radical; R is C1-C18-alkyl, phenyl or benzyl; the radicals R4 are each, or the two radicals R4 together a hydrocarbon radical having from 1 to 20 C atoms; R01 is a hydrocarbon radical having from 1 to 20 C atoms; and R02 and R'o2 are each, independently of one another, a hydrogen atom or independently have the meaning of R01, or R01 and R02 together with the C atom to which they are bound form a three- to eight- membered hydrocarbon or hetero hydrocarbon ring. The compounds are chiral ligands for complexes of metals of transition groups I and VIll which act as catalysts for asymmetric additions, for example of hydrogen, onto prochiral unsaturated organic compounds.

L'invention concerne des composés de formules (I et Ia) dans lesquelles X¿1? représente un phosphino secondaire; R¿3? désigne un radical hydrocarbure comprenant entre 1 et 20 atomes C, un radical hydrocarbure hétéro comprenant entre 2 et 20 atomes et au moins un hétéroatome sélectionné dans le groupe comprenant 0, S, NH et NR ou un radical -S0¿2?-R; R désigne un alkyle, un phényle ou un benzyle en C¿1?-C¿18?; les deux radiaux R¿4? désignent individuellement ou ensemble un radical hydrocarbure possédant entre 1 et 20 atomes C; R¿01? représente un radical hydrocarbure comprenant entre 1 et 20 atomes C; et R¿02? et R'¿o2? représentent, indépendamment l'un de l'autre, un atome d'hydrogène ou ont, de manière indépendante, les significations de R¿01 ?ou R¿01? et R¿02? conjointement avec l'atome C auquel ils sont liés forment un cycle hydrocarburé ou hétéro hydrocarbure comprenant entre trois et huit chaînons. Les composés sont des ligands chiraux destinés à des complexes de métaux des groupes de transition I et VIll, agissant comme catalyseurs pour des additions asymétriques, par exemple, d'hydrogène, sur des composés organiques prochiraux insaturés.

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