A library of hitherto unknown functionalized and annulated spiro[indoline-3,1`-indolizin]-2-one derivatives incorporating
thiophene moiety has been synthesized under conventional and microwave irradiation conditions. The structures,
regio and diastereoselectivity of the synthesized cycloadducts have been confirmed using different analytical and
Keywords: 2d NMR, microwave irradiation, regioselectivity, spiro[indoline-3, 1`-indolizin]-2-one derivatives.
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