
Monatshefte fur Chemie p. 1113 - 1118 (1989)
Update date:2022-08-04
Topics:
Sepulveda-Arques, Jose
Medio-Simon, Mercedes
Piqueres-Vidal, Lourdes
1-tert-Butyl-4-vinylpyrazole 1a reacts with dimethyl acetylenedicarboxylate (DMAP), methyl propiolate (MP) and N-phenylmaleimide (NPMI) affording the indazole derivatives 2, 3, and 5 as a result of a Diels-Alder (<4+2>) cycloaddition.With diethylazodicarb
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