Tetrafluoro-2,3-dihydrobenzofurans

Details Tetrafluoro-2,3-dihydrobenzofurans Tetrafluoro-2,3-dihydrobenzofurans

1987-09-08

1988-09-20

Lee, Mary C.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549462, C07D30782

Patent

active

047727306

ABSTRACT:
Benzofurans of the formula ##STR1## wherein R.sup.1 is hydrogen, nitro, amino, phthalimido or acetamido, R.sup.2 is at least one of halo, cyano, alkyl(C.sub.1 -C.sub.8), cycloalkyl(C.sub.3 -C.sub.8), hydroxy, alkoxy(C.sub.1 -C.sub.8), acyl(C.sub.1 -C.sub.8), acyloxy(C.sub.1 -C.sub.8), alkoxy(C.sub.1 -C.sub.8)carbonyl, alkoxy(C.sub.1 -C.sub.8)carbonylalkyl(C.sub.1 -C.sub.8), phenyl, phenyloxy, trifluoromethyl or dialkyl(C.sub.1 -C.sub.8)amino, m is 0-3, and at least one of the carbon atoms of the benzene ring of said benzofuran is substituted. The compounds are intermediates in the preparation of pyrazoline insecticides.

REFERENCES:
patent: 4636523 (1987-01-01), Plummer
Bailey et al., Tet. Letters, 11, pp. 869-870 (1975).
Malyuta et al., Tet., 31(9), pp. 1201-1207 (1975).
Maksimov et al., J. Fluorine Chem. (1985), p. 58.

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