Synthesis and 19F NMR spectra of fluoroanthracenes, fluoroacenaphthylenes, and fluorofluoranthenes, and a practical synthesis of 7-substituted fluoranthenes
Synthesis and characterisation of nitro-, nitroso- and aminofluoranthenes
作者:C. J. van Haeringen、N. F. Aten、J. Cornelisse、J. Lugtenbarg
DOI:10.1002/recl.19921110701
日期:——
The synthesis is reported of the five mononitrofluoranthenes. 1-Nitrofluoranthene was synthesized in 20% from fluoranthene, 2-nitrofluoranthene in 24% from 1,2,3,10b-tetrahydrofluoranthene, 3-nitrofluoranthene in 13% from fluoranthene and 7- and 8-nitrofluoranthene in 34% from 1,2,3,10b-tetrahydrofluoranthene. The pure nitrofluoranthenes were converted into their nitroso and amino analogues. The nitrosopyrenes
The naphthalene-tethered system enabled dearomative Diels–Alder/sulfur extrusion reaction of thiophenes and alkynes. Tri(o-tolyl)phosphine [P(o-tol)3] worked effectively as a sulfur scavenger to suppress the side reactions, and a wide range of fluoranthenes were obtained in moderate to excellent yields.
萘系链系统能够实现噻吩和炔烃的脱芳香狄尔斯-阿尔德/硫挤出反应。三(邻甲苯基)膦[P( o -tol) 3 ]作为硫清除剂有效地抑制了副反应,并以中等至优异的产率获得了各种荧蒽。