Process for the preparation of 8-ethylenic carbonyl compounds

Details Process for the preparation of 8-ethylenic carbonyl compounds Process for the preparation of 8-ethylenic carbonyl compounds

1982-03-05

1983-12-20

Reamer, James H.

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

Organic compounds

Oxygen containing

568384, C07C 4551

Patent

active

044219342

ABSTRACT:
Process for the preparation of .delta.-ethylenic carbonyl compounds of the formula (I) by the oxy-Cope rearrangement of a diethylenic alcohol of the formula (II), in the presence of a mercuric salt: in formulae (I) and (II), R.sub.1, R.sub.2, R.sub.4, R.sub.5 and R.sub.6, which are identical or different, represent a hydrogen atom or an acyclic hydrocarbon radical and R.sub.3 represents an acyclic hydrocarbon radical, it being understood that R.sub.1 and R.sub.3 can together form a trimethylene radical, or alternatively that R.sub.3 and R.sub.4 can together form an alkylene radical containing 3 to 20 carbon atoms. ##STR1##

REFERENCES:
patent: 4222963 (1980-09-01), Fujita et al.
Miyashi et al., Chem. Abst., vol. 91, #19210u (1979).
Viola et al., J.A.C.S., vol. 89, p. 3462 (1907).
Fujita et al., Chem. Comm, p. 272 (1978).
Fujita et al., Synthesis, p. 934, (1978).
Roumestant et al., Tet, vol. 33, p. 1283 (1977).
Doutheau et al., Tet, vol. 36, p. 1953 (1980).
Evans et al., J.A.C.S., vol. 97, p. 4765 (1975).

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