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US 2013/0281744 A1Published application
Process for the preparation of dichlorofulvene
AssigneeSyngenta Crop Protection AG
InventorsGeorge Robert Hodges, Dominik Faber, Alan James Robinson, Andrew Charles Shaw
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Abstract
The invention relates to a process for the preparation of formula (I) which process comprises pyrolysing a compound of formula (II) wherein X is chloro or bromo, and to compounds which may be used as intermediates for the manufacture of the compound of formula I and to the preparation of said intermediates.
Claims13
A process for the preparation of the compound of formula I
- which process comprises pyrolysing a compound of formula II
- wherein X is chloro or bromo at temperatures of at least 200° C.
A compound of formula IIIe
- wherein X is chloro or bromo.
A compound of formula IIIf
- wherein X is chloro or bromo.
A process for the preparation of the compound of formula I which process comprises pyrolysing a compound of formula IIIg
Dependencies are inferred from the claim text.