Preparation of derivatives of cyclobutane and cyclobutene

Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal

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260666PY, C07C 303

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active

039652041

ABSTRACT:
Preparation of alkylidenecyclobutane derivatives and of cyclobutene derivatives by contacting a (cyclo)alkene with an allene or with a 1-alkyne in the liquid phase in the presence of a dissolved Lewis acid derived from an element of Group III A of the Periodic Table of the Elements, titanium, tin, antimony, tantalum, rhenium, iron, or zinc.

REFERENCES:
patent: 2914541 (1959-11-01), Cripps
patent: 2960541 (1960-11-01), Elam et al.
patent: 3214483 (1965-10-01), Cripps
patent: 3363011 (1968-01-01), Hartzler
patent: 3760016 (1973-09-01), Coulson

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