Synthesis of Aryl Amine Derivatives from Benzyl Nitriles via Electrocyclization of in Situ Generated <i>N</i>-Silyl Ketene Imines
作者:Fumihiko Yoshimura、Taiki Abe、Keiji Tanino
DOI:10.1021/acs.orglett.6b00490
日期:2016.4.1
N-silyl ketene imines in organic synthesis is reported. Benzyl nitriles containing an alkenyl or aryl group at the ortho position were smoothly converted into aryl amines in good yields under two sets of mild silylation conditions: (1) nonbasic conditions using TMSNTf2–iPr2NEt or (2) basic anionic conditions using lithium diisopropylamide–triisopropylsilyl chloride (LDA–TIPSCl). The reaction probably proceeds
据报道,在有机合成中,N-甲硅烷基烯酮亚胺的反应性尚未得到开发。在两组温和的甲硅烷基化条件下,邻位含有烯基或芳基的苄腈可以高收率平稳地转化为芳基胺:(1)使用TMSNTf 2 – i Pr 2 NEt的非碱性条件或(2)使用TMSNTf 2 – i Pr 2 NEt的非碱性条件二异丙基氨基锂–三异丙基氯硅烷(LDA–TIPSCl)。该反应可能通过原位产生N-甲硅烷基烯酮亚胺,然后进行6π-电环化和芳构化来进行。
Synthesis of mono-substituted derivatives of 6-aminoquinoline
作者:Tian Lan、Xian Xia Yuan、Jiang Hong Yu、Chao Jia、Yu Shi Wang、Hui Juan Zhang、Zi Feng Ma、Wei Dong Ye
DOI:10.1016/j.cclet.2010.10.005
日期:2011.3
Abstract Several 6-aminoquinoline derivatives, which could be used in drug design, have been synthesized. The reaction conditions were comparatively studied, and the p -chloroaniline was used as optimum oxidant in Skraup–Doebner–Von Miller reaction. The nitro group was reduced effectively by SnCl 2 with no halo-removed occurred.