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作者:Julien Petrignet , Emilie Thiery , Laurence Silpa ...
来源:[J].Synthesis(IF 2.5), 2014, pp.-
摘要:New and efficient methods for the synthesis of 7-substituted-4-trifluoromethylpyrimido[1,2-b]pyridazin-2-one derivatives using either two-step Suzuki/heterocyclization, or two-step heterocyclization/substitution sequences are developed. A variety of substituted products are obtai...
作者:Kizirian Jean-Claude , Aiguabella Nuria , Pesquer Albert ...
来源:[J].Organic letters, 2010, Vol.12 (24), pp.5620-3
摘要:... Ethyl 4,4,4-trifluorobutynoate was an excellent substrate; its reaction with norbornadiene gave the corresponding PKR adduct in good yield and complete regioselectivity. Conjugate addition of nitroalkanes or cyanide to this adduct is stereospecific and entails concomitant lo...

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