Claisen??Umlagerung von 2??Propinyl??(3??pyridyl)??und Allyl??(3??pyridyl) äthern

J Bruhn, J Zsindely, H Schmid…

Index: Bruhn,J. et al. Helvetica Chimica Acta, 1978 , vol. 61, p. 2542 - 2559

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Citation Number: 20

Abstract

Summary 2-Propinyl (3-pyridyl) ether (l), synthesized from the corresponding 3-pyridinol, was heated in DMF or decane at 208" in a sealed tube. In this way the furopyridines 2 and 3 were formed, and furthermore the pyranopyridine 4 if decane was used as solvent (Scheme I). The same reactions took place with (2-methyl-3-pyridyl) 2-propiny1 ether (14). In DMF only 15, and in decane 16 as well as 15 were formed (Scheme 3). The rearrangement of ...