Synthesis of 2-arylamino-3-cyanoquinolines <i>via</i> a cascade reaction through a nitrilium intermediate
作者:Mani Ramanathan、Jing Wan、Yi-Hung Liu、Shie-Ming Peng、Shiuh-Tzung Liu
DOI:10.1039/c9ob02427a
日期:——
method for the preparation of 2-amino-3-cyanoquinolines from readily available aryldiazonium salts, 2-aminoarylketones, and malononitrile via a cascade reaction is reported. This one-pot approach involves the in situ generation of an N-arylnitrilium intermediate from the direct reaction of aryldiazonium salts and malononitrile, which undergoes intermolecular amination, Knoevenagel condensation, and then
Fluorenones and Diphenic Acids. IX.<sup>1</sup> Establishment of Authentic 1-Bromo- and 4-Bromofluorenones
作者:Ernest H. Huntress、Karl Pfister、K. H. T. Pfister
DOI:10.1021/ja01264a036
日期:1942.12
Kottenhahn, Justus Liebigs Annalen der Chemie, 1891, vol. 264, p. 174
作者:Kottenhahn
DOI:——
日期:——
US3947466A
申请人:——
公开号:US3947466A
公开(公告)日:1976-03-30
Completion of the Set: Synthesis of the (6,X′)-Flubromazepam Positional Isomers as Standards for Forensic Analysis
作者:Ariel N. Parker、Stefan France
DOI:10.1021/acs.joc.1c02492
日期:2022.1.7
forensic examiners regarding the emergence of positional isomers as technically legal alternatives to scheduled benzodiazepines has encouraged the preemptive synthesis of analogues as standards. Recently, flubromazepam was identified by the Drug Enforcement Administration for future scheduling, and subsequently, 9 of the 12 possible flubromazepam isomers were synthesized. However, the three (6,X′)-isomers