Journal of Organic Chemistry p. 4095 - 4096 (1991)
Update date:2022-08-06
Topics:
Eisch, John J.
Hallenbeck, Lawrence E.
Lucarelli, Michael A.
The initially formed product from ynamines, such as diethyl(1-propynyl)amine, and 1-alkynyl sulfones is in fact the corresponding cyclobutadiene and not the 2-sulfinyl-4-aminofuran proposed by Himbert.The formation of the cyclobutadiene ring has been established by MS, IR, and 1H NMR data, as well as by chemical trapping experiments.
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