Derivatives of 2H-pyran-2-one
AssigneeFMC Corporation
InventorsKiyoshi Kondo, Toshiyuki Takashima, Minoru Suda
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Abstract
Processes for producing a (1.alpha., 4.alpha., 5.alpha.)-6,6-dimethyl-4-halo-substituted-methyl-3-oxabicyclo[3.1.0]hexan- 2-one and its novel intermediates from known and inexpensive starting materials are described and exemplified.
Claims3
A compound of the formula ##STR17## wherein X.sup.1 and X.sup.2 are the same or different and each is an independently selected halogen atom, a trichloromethyl group, or a trifluoromethyl group, and Y.sup.1 and Y.sup.2 are independently bromine or chlorine atoms with the proviso that Y.sup.1 is a bromine atom when at least one of X.sup.1, X.sup.2, and Y.sup.2 is a bromine atom.
Dependencies are inferred from the claim text.