Production of bis-phosphino or -arsino compounds, used as chelating ligands for transition metals, involves reacting di-halo compound with two benzyl-diorganyl-element compounds and hydrogenating the product

    公开(公告)号:DE10033955A1

    公开(公告)日:2001-03-08

    申请号:DE10033955

    申请日:2000-07-13

    Applicant: BASF AG

    Abstract: Symmetrical or asymmetrical bis-phosphino, bis-arsino or phosphino-arsino compounds are produced by reacting a dihalo-organic compound with two benzyl-diorganyl-phosphine or -arsine compounds which may or may not be identical and then hydrogenating the product. A process for the production of compounds of formula (V) involves reaction of a compound of formula (I) with a dihalo compound (II) and a compound of formula (III) followed by hydrogenation. Hal-X-Hal (II) R R E-X-ER R (V) E = phosphorus or arsenic; X = a bridging group with 1-10 atoms between the atoms of E; R , R , R , R = 1-20C alkyl, 3-10C cycloalkyl, aryl or heteroaryl with up to 4 condensed rings, or 7-20C aralkyl (all optionally substituted), or R , R and/or R , R together may form 2-20C alkylene, arylene or heteroarylene groups with up to 4 condensed rings, or 7-20C aralkylene (all optionally substituted; R -R = H, hydroxyl, halogen, acyl, CHO, 1-12C alkyl or 6-12C aryl, with the proviso that R and R are not both OH; Hal = F, Cl, Br or I; R -R = as defined for R -R .

Patent Agency Ranking