Catalyst and method for the carbonylation of oxiranes

Details Catalyst and method for the carbonylation of oxiranes Catalyst and method for the carbonylation of oxiranes

2003-07-31

2008-09-02

Shiao, Rei-Tsang (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C502S152000

Reexamination Certificate

active

07420064

ABSTRACT:
Lactones are prepared by catalytic carbonylation of oxiranes using a catalyst system comprisinga) at least one cobalt compound as component A andb) at least one metal compound of the formula (I) as component B,in-line-formulae description="In-line Formulae" end="lead"?MXxRn-x  (I)in-line-formulae description="In-line Formulae" end="tail"?whereM is an alkaline earth metal or a metal of group 3, 4 or preferably 12 or 13 of the Periodic Table of the Elements,R is hydrogen or a hydrocarbon radical which may be substituted on the carbon atoms other than the carbon atom bound to M,X is an anion,n is a number corresponding to the valence of M andx is in the range from 0 to n,with n and x being selected so that the compound is uncharged, as catalyst.

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