Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1983-01-10
1986-04-01
Terapane, John F.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
549549, 549525, C07C 6974, C07D30114, C07D30338
Patent
active
H00000493
ABSTRACT:
Disclosed is a Wittig-type process for preparing 3-(2-chloro-3,3,3-trifluoropropenyl)-2,2-dimethylcyclopropanecarboxylates which comprises reacting 1,1,1-trichlorotrifluoroethane with hexamethylphosphorous triamide at a temperature in the range of about -80.degree. C. to 10.degree. C. in the presence of an inert aprotic solvent and a carbonaldehyde ester, and thereafter maintaining the reaction mixture at a temperature in the range of about 0.degree. C. to 30.degree. C. Also disclosed are the novel caronaldehyde ester (2-methyl[1,1'-biphenyl]-3-yl)methyl 2,2-dimethyl-3-formylcyclopropanecarboxylate and a precursor compound, (2-methyl[1,1'-biphenyl]-3-yl)methyl 2,2-dimethyl-3-(1,2-epoxy-2-methylpropyl)cyclopropanecarboxylate, and methods for producing them.
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Andersen Robert L.
Ertelt H. Robinson
FMC Corporation
Kennedy Robert M.
Locker Howard J.
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