434942-25-3Relevant articles and documents
Synthesis of bioactive heterocycles: Thermal [3,3] sigmatropic rearrangement of 4-(4′-aryloxybut-2-ynyloxy)-6-methyl-2-pyrones
Majumdar,Ghosh,Kundu
, p. 753 - 758 (2002)
Synthesis of a number of hitherto unreported 4-aryloxy-methylene-7-methyl-2,3-dihydropyrano[3,2-c]pyran-5-ones (4a-e) have been achieved in moderate yields by the thermal [3,3] sigmatropic rearrangement of 4-(4′-aryloxybut-2′-ynyloxy)-6-methylpyran-2-ones (3a-e).