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Synthesis and configuration of some spiro [indan-2,2′-pyrrolidine] and spiro [pyrrolidine-2,2′-tetraline] derivatives Catalytic hydrogenation of the nitrosoindan and nitrosotetralin derivatives 8 yielded trans-1-hydroxy-spiro [indan-2,2′-pyrrolidin]-5′-one ( 9 ) and trans-1′-hydroxy-spiro [pyrrolidine-2,2′-tetralin]-5-one ( 10 ) respectively, whilst the corresponding cis compounds 12 and 15 were prepared via the chlorides 11 and 14 . The configurations of 10 and 13 were determined by X-Ray analysis. 相似文献
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Spiro[1,3-benzodioxole-2,3′-pyrrolidine] was synthesized in several steps from ethyl 2-ethoxycarbonyl-1, 3-benzodioxole-2-acetate, prepared by condensation of pyrocatechol with either diethyl meso-dibromosuccinate, diethyl acetylenedicarboxylate or diethyl bromo maleate. The structural factors leading to the formation of the benzodioxole rather than the benzodioxan and some possible reaction mechanisms are discussed. 相似文献
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