Process for the telomerization of a conjugated diene,...

Details Process for the telomerization of a conjugated diene,... Process for the telomerization of a conjugated diene,...

2006-06-06

2006-06-06

Dang, Thuan D (Department: 1764)

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By addition of entire unsaturated molecules, e.g.,...

C585S506000

Reexamination Certificate

active

07057082

ABSTRACT:
Process for the telomerization of a conjugated diene,wherein the conjugated diene is reacted with a compound containing an active hydrogen atom and having a formula R′—H in the presence of a telomerization catalyst based on:(a) a source of group VIII metal,(b) a bidentate ligandwherein the bidentate ligand has the general formula Iin-line-formulae description="In-line Formulae" end="lead"?R1R2M1—R—M2R3R4  (I)in-line-formulae description="In-line Formulae" end="tail"?wherein M1and M2are independently P, As or Sb; R1, R2, R3and R4independently represent a monovalent aliphatic group;or R1, R2and M1together and/or R3, R4and M2together independently represent an optionally substituted aliphatic cyclic group with at least 5 ring atoms, of which one is the M1or M2atom, respectively;R represents a bivalent organic bridging group; and novel bidentate diphosphines which can be used in this process.

REFERENCES:
patent: 3499042 (1970-03-01), Smutny
patent: 3518315 (1970-06-01), Smutny
patent: 3670029 (1972-06-01), Romanelli
patent: 3670032 (1972-06-01), Romanelli
patent: 3769352 (1973-10-01), Romanelli
patent: 3887627 (1975-06-01), Romanelli
patent: 4163760 (1979-08-01), Elsner et al.
patent: 4196135 (1980-04-01), Enomoto et al.
patent: 5254782 (1993-10-01), Schaart et al.
patent: 2040708 (1971-06-01), None
patent: 2703802 (1978-08-01), None
patent: 0218100 (1986-09-01), None
patent: 0311352 (1989-12-01), None
patent: 1178812 (1970-01-01), None
patent: 1301465 (1970-08-01), None
patent: 1248593 (1971-10-01), None
patent: 1354507 (1974-05-01), None
patent: 1561874 (1980-03-01), None
patent: 6816008 (1969-05-01), None
patent: WO 87/07600 (1987-12-01), None
patent: WO 91/0326 (1991-03-01), None
patent: WO 92/10450 (1992-06-01), None
patent: WO 00/09521 (2000-02-01), None
patent: WO 00/56695 (2000-09-01), None
Chemical Abstracts, vol. 96, No. 25, Jun. 21, 1982 Columbus, Ohio, US; Abstract No. 217253, Kuraray Co., Ltd. Japan: “Telomerization of Butadiene and Isoprene” XP002244618.
Karsch H. H. et al., “Funktionelle Trimethylphosphanderivate, XVIII [1] Methyl(Phosphinomethyl)Silanes and -Stannanes,” Zeitschrift Fur Naturforschung, Teil B: Anorganische Chemie, Organische Chemie., vol. 38b, No. 11, 1983, pp. 1399-1405 XP008018568.
U.S. Appl. No. 10/669,916, filed Sep. 24, 2003, Drent et al.
Morimoto, T. et al., “A Convenient Method for the Synthesis of Bis(Trialkylphosphine)-Boranes Bearing Two Phospholanes,” Synlett (a996), (12), pp. 1211-1212, 1996 XP0022449448.

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