Tetrahedron Letters p. 921 - 924 (1988)
Update date:2022-08-04
Topics:
Luthardt, Peter
Wuerthwein, Ernst-Ulrich
1,3-Diazabutadienes react with diphenylketene in <2+2> - and <4+2> cycloaddition reactions, depending on the substitution pattern.Spectroscopic data (IR, (1)H- and (13)C-NMR) and results of quantummechanical model calculations (ab initio 3-21G) are presented.
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