Process for preparing unsaturated spiranic derivatives

Details Process for preparing unsaturated spiranic derivatives Process for preparing unsaturated spiranic derivatives

1978-08-18

1979-11-27

Morgenstern, Norman

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260586G, C07C 4500, C07C 4954

Patent

active

041761391

ABSTRACT:
Process for preparing unsaturated spiranic derivatives of formula ##STR1## wherein index n represents integer 1 or 2 and wherein symbol R defines a lower alkyl radical, starting from the corresponding cycloalkanone via an addition thereto of a dihalo-alkene of formula ##STR2## wherein symbol R possesses the above-indicated meaning and X represents a halogen atom.

REFERENCES:
Bahurel et al., "CA" 78:110676t (1973) [C.R. Acad. Sci., Ser. C, 1972, 275(25), 1539-1540].
Bahurel et al., "CA" 81:3442d, (1974) [Synthesis 1974 (2), 118-119].
Descotes et al., "CA", 73:55681k, (1970) [C.R. Acad. Sci. Ser. C, 1970, 270(21), 1735-1738].
Bahurel et al., "CA", 75:88161k (1971) [Bull. Soc. Chem. Fr., 1971, (6) 2209-2214].

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