Method for producing compounds having a CF 2 O bridge

Details Method for producing compounds having a CF 2 O bridge Method for producing compounds having a CF 2 O bridge

2006-09-12

2006-09-12

Wu, Shean C. (Department: 1756)

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

Organic compounds

Oxygen containing

65, 65

Reexamination Certificate

active

07105708

ABSTRACT:
The invention relates to a process for the preparation of compounds containing at least one —CF2—O— bridge in the molecule, in whicha) an acid is added onto at least one ketene dithioketal,b) the resultant bis(alkylthio)carbenium salt is reacted with at least one compound having at least one hydroxyl group in the presence of a base,c) and subsequently, preferably in situ, the resultant dithioorthoester is subjected to oxidative fluorodesulfurisation using a fluorinating agent and an oxidant to give the compound containing at least one —CF2—O— bridge in the molecule.

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