1,3-Dipolar Cycloadditions, 89. New Contributions to the Chemistry of Diphenylnitrilimine
Methyl propiolate, tetrolate, and phenylpropiolate combine with diphenylnitrilimine (1) to afford regioisomeric cycloadducts; the preferential orientation shifts in the sequence given from the pyrazole-5-carboxylic ester to the 4-carboxylic ester.Correspo
Clovis, James S.,Fliege, Werner,Huisgen, Rolf
p. 3062 - 3070
(2007/10/02)
Transition Metal Catalyzed Addition Reactions of 3-Phenyl-2H-azirines and Alkyl Acetylene Carboxylates
In the presence of molybdenum hexacarbonyl, the 3-phenyl-2H-azirines 1 and 7 react with alkyl acetylene carboxylates 2 via the cleavage of the C,N-double bond to give 2H-pyrroles 5 or pyrrole 9 (Table), whose structures were deduced from the spectra data,
Inada, Akira,Heimgartner, Heinz
p. 1489 - 1498
(2007/10/02)
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