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Browsing by Author "范振頡"

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    探討O-tosylamidoximes與3-Dimethylaminopropenones進行[3 + 2]合環反應之區域選擇性及合成2,4-Disubstituted Imidazoles之研究
    (2017) 范振頡; Fan, Zhen-Jie
    本研究探討O-tosylalkylamidoximes與作為1,3-dipolarophile Michael Acceptors的3-dimethylaminopropenones在路易士酸FeCl3催化下進行[3 + 2]合環反應合成2,4-disubstituted imidazoles和2,4,5-trisubstituted imidazoles。 此外,本研究亦探討反應之區域選擇性,製備N-substituted- O-tosylamidoximes此一氮上含烷類取代基之起始物與Michael Acceptors進行反應,純化並透過2-D NMR NOESY鑑定其烷類取代基接在產物imidazole之氮上相對位置,結果推論具高區域選擇性,也藉此暫時推測出其反應機制。

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