2-苯基-5,6-二氢咪唑并[2,1-a]异喹啉 在
10% palladium on active carbon 作用下,
反应 1.0h,
以70%的产率得到2-苯基咪唑并(2,1-a)异喹啉
参考文献:
名称:
Anellierte Imidazole
摘要:
AbstractBei der Umsetzung von α‐(3,4‐Dihydroisochinolinium)‐ketonen mit Hydroxylamin bei pH 4–5 entstehen keine Oxime, sondern kondensierte Imidazolderivate. Durch Modellversuche wird ein Reaktionsverlauf über ein N‐substituiertes Hydroxylamin ausgeschlossen.
Visible Light as a Sole Requirement for Intramolecular C(sp<sup>3</sup>)–H Imination
作者:Jingjing Li、Pengxiang Zhang、Min Jiang、Haijun Yang、Yufen Zhao、Hua Fu
DOI:10.1021/acs.orglett.7b00533
日期:2017.4.21
A novel, simple, and practical visible-light-mediated intramolecular α-C(sp3)–H imination of tertiaryaliphaticamines containing β-O-aryl oximes leading to N-heterocycles has been developed. The reaction was performed well at rt with tolerance of some functional groups. Importantly, the selective C–H functionalization did not require added catalyst, oxidant, additive, acid, and base; visible light
A novel copper-catalyzed oxidative formal [3 + 2] annulations of ketoximeacetates and tetrohydroisoquinolines for the synthesis of fused pyrazoles and imidazoles has been developed. A broad range of important isoquinoline-fused pyrazole and imidazole products were selectively generated by the key control of oxidant.