Organic compounds -- part of the class 532-570 series – Organic compounds – Esters having the thiocarboxylate group – -cx- – wherein the...
Patent
1985-07-16
1987-06-30
Ford, John M.
Organic compounds -- part of the class 532-570 series
Organic compounds
Esters having the thiocarboxylate group, -cx-, wherein the...
C07C15400
Patent
active
046772189
ABSTRACT:
A process for the preparation of racemic or optically active isomers of alkyl esters of cis chrysanthemic of the formula ##STR1## wherein R is alkyl of 1 to 6 carbon atoms comprising reacting a racemic or optically active cis compound of the formula ##STR2## wherein R has the above definition with an aryl halothioformate of the formula ##STR3## wherein Hal is a halogen and Ar is aryl of 6 to 12 carbon atoms optionally substituted with at least one alkyl of 1 to 3 carbon atoms to obtain a compound of the formula ##STR4## of cis configuration and heating the latter optionally in an organic solvent to obtain the compound of formula I and novel intermediates.
REFERENCES:
patent: 3864376 (1975-02-01), Henrick et al.
Majewski et al., J. Org. Chem., 1984, 49, 2682-2687.
Gerlach et al., J. C. S. Chem. Comm., 1972, pp. 1215-1216.
Majewski et al., Tetrahedron Letters, vol. 23, #13, pp. 1343-1346.
Bloy Vincente
Frank-Neumann Michel
Sedrati Madjid
Vigneron Jean-Pierre
Ford John M.
Roussel Uclaf
Whittenbaugh Robert C.
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