Process for the preparation of terpenes

Details Process for the preparation of terpenes Process for the preparation of terpenes

1990-08-10

1991-12-17

Davis, Curtis R.

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

Product having more than two double bonds

549407, 560127, 568408, 568417, 570189, 570217, 585641, C07C 200

Patent

active

050736590

ABSTRACT:
A terpene compound having the formula (III) is produced by reacting an allylic halide having the formula (I) with a Grignard reagent having the formula (II) in the presence of anhydrous zinc chloride and a copper compound or an organic zinc halide compound having the formula (IV) in the presence of a copper compound, provided that when A-A is C-C, R' is hydrogen and when A-A is C=C, X is chlorine. ##STR1##

REFERENCES:
patent: 4168271 (1979-09-01), Cardenas et al.
patent: 4292459 (1981-09-01), Cardenas et al.

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