Process for functionalizing alkanes

Details Process for functionalizing alkanes Process for functionalizing alkanes

C - Chemistry, Metallurgy

07

C

260/654, 204/91.

C07C 17/10 (2006.01) C07C 23/02 (2006.01) C07C 19/02 (1985.01)

Patent

CA 1253887

ABSTRACT OF THE DISCLOSURE Process for functionalizing saturated hydro- carbons comprising: (a) reacting said saturated hydrocarbons of the formula: R1H wherein H represents a hydrogen atom; and R1 represents a saturated hydrocarbon radical, with a metal complex of the formula: CpRh[P(R2)3]H2 wherein Cp represents a cyclopentadienyl or alkylcyclopentadienyl radical; Rh represents a rhodium atom; P represents a phosphorus atom; R2 represents a hydrocarbon radical; H represents a hydrogen atom, in the presence of ultraviolet radiation to form a hydridoalkyl complex of the formula: CpRh[P(R2)3](R1)H (b) reacting said hydridoalkyl complex with an organic halogenating agent such as a tetrahalomethane or a haloform of the formulas: CX'X''X'''X'''' or CHX'X''X''' wherein X', X'', X''', X'''' represent halogens selected from bromine, iodine or chlorine atom, at a temperature in the range of about -60° to -17°C to form the corresponding haloalkyl complex of step (a) having the formula: CpRhPMe3RX; and, (c) reacting said haloalkyl complex formed in (b) with halogen (X2) at a temperature in the range of about -60° to 25°C (i.e., ambient) to form a functional halo- alkyl compound.

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