Process for the preparation of vinylcyclopropane derivatives

Details Process for the preparation of vinylcyclopropane derivatives Process for the preparation of vinylcyclopropane derivatives

1979-08-20

1981-02-24

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

560 59, 560102, 568939, 560124, 568 14, 568924, 568 31, 568 33, 568929, 568 34, 568 58, 2603131, 568 67, 568312, 2603191, 568314, 568316, 26032612R, 568329, 568346, 26032613R, 568348, 568352, 26032616, 568631, 568635, 2603262, 568949, 570214, 2603265R, 548202, 548206, 26032662, 548213, 548214, 2603269, 548225, 548233, 26034611, 548235, 548236, 26034622, 548337, 548338, 2603473, 548341, 548243, 2603474, 548245, 548247, 2603478, 548248, 548346, 260454, 548373, 548375, 260456P, 548378, 549 49, 260456R, 549 52,

Patent

active

042527392

ABSTRACT:
This invention provides a convenient and commercially adaptable process for the preparation of vinylcyclopropane derivatives in high yields. The process involves reacting an alkylating agent and an activated methylene compound in the presence of an onium compound, an alkali metal compound and water, which while only necessary in trace amounts can be present in substantial quantities.

REFERENCES:
patent: 3974199 (1976-08-01), Plonka et al.
Skinner et al, J. Am. Chem. Soc., 72, 1648 (1950).
Kierstead et al, J. Chem. Soc., 1952, 3610-3621.
Kierstead et al, J. Chem. Soc., 1953, 1799.
Murdock et al, J. Org. Chem., 27, 2395 (1962).
Birch et al, J. Org. Chem., 23, 1390 (1958).
Schmid et al., J. Org. Chem., 32, 254 (1967).
Stewart et al, J. Org. Chem., 34, 8 (1969).

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