Selectivity in cycloadditions to vinylheterocumulenes.[2+ 2] and [4+ 2] Cycloaddition of (diethylamino) propyne to vinyl isocyanate and vinyl isothiocyanate
A Dondoni, L Kniezo, A Medici
Index: Dondoni, Alessandro; Kniezo, Ladislav; Medici, Alessandro Journal of Organic Chemistry, 1982 , vol. 47, # 20 p. 3994 - 3998
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Citation Number: 27
Abstract
Reagents; i, Mes. CN0; ii, Raney Ni. sequent characterization of these compounds. The lH NMR spectrum'of 8 showed a broad singlet at 6 8.28 corresponding to the a-proton adjacent to the C3 methyl group and two doublets at 6 8.27 and 6.77 with a coupling constant of Jds= 5.5 Hz corresponding to the two vicinal (7)(a) Neunhoeffer, H.; Werner, G. Justus Liebigs Ann. Chem. 1972, 761, 39.(b) Sundberg, RJ; Suter, SR; Brenner, MJ Am. Chem. SOC.
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