New (S)-pyrrolidinylmethylimidazole這是一個(gè)單詞嗎?還是中間有間隔的?
新的- pyrrolidinylmethylimidazole配體(4a-c)已被以最便宜的原料在短短的步驟里但高產(chǎn)量地以直截了當(dāng)?shù)姆绞胶铣闪?為了咪唑類與芳雜環(huán)溴化物或氯化物,比較溫和但高效催化的n-arylation程序同存在4A及cs2co3已開發(fā).值得注意的是,該議定書可以容忍的功能團(tuán)體,如酯,腈,硝基,丙酮,游離羥基,游離最初胺對(duì)芳鹵.該議定書也可以適用于其他ð-電子富含氮化合物(吡咯,吡唑,吲哚,苯并咪唑以及三唑) 并得到產(chǎn)率良好的N-arylazoles.
希望能幫上你的忙.
英語翻譯
英語翻譯
New (S)-pyrrolidinylmethylimidazole ligands (4a-c) have been readily synthesized in a straightforward
fashion from least expensive starting materials in short steps in high yields.Relatively mild and highly
efficient CuI-catalyzed N-arylation procedures for imidazoles with aryl and heteroaryl bromides or chlorides
have been developed in the presence of 4a and Cs2CO3.It is important to note that the protocol could
tolerate functional groups such as ester,nitrile,nitro,ketone,free hydroxyl,and free primary amine on
the aryl halide.The protocol could also be applicable to other ð-electron-rich nitrogen heterocycles (pyrrole,
pyrazole,indole,benzimidazole,and triazole),affording the N-arylazoles in good to excellent yields.
New (S)-pyrrolidinylmethylimidazole ligands (4a-c) have been readily synthesized in a straightforward
fashion from least expensive starting materials in short steps in high yields.Relatively mild and highly
efficient CuI-catalyzed N-arylation procedures for imidazoles with aryl and heteroaryl bromides or chlorides
have been developed in the presence of 4a and Cs2CO3.It is important to note that the protocol could
tolerate functional groups such as ester,nitrile,nitro,ketone,free hydroxyl,and free primary amine on
the aryl halide.The protocol could also be applicable to other ð-electron-rich nitrogen heterocycles (pyrrole,
pyrazole,indole,benzimidazole,and triazole),affording the N-arylazoles in good to excellent yields.
英語人氣:988 ℃時(shí)間:2020-04-02 17:17:57
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