Tetrahedron Letters p. 4625 - 4628 (1989)
Update date:2022-08-05
Topics:
Larsen, Scott D.
Martinborough, Esther
Cycloaddition of β-alkyl or β-arylenones to bicyclic sydnone 3 in the absence of added oxidant affords mixtures of the tetrahydropyrazolo<1,5-a>pyridines 4 and 5.The amount of 5 formed was dependent on the nature of R.
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