HKI 0231B(1b)的总合成以12个线性步骤完成,总产率为15.6%。不寻常的阴离子环化提供了对中间体61和嵌入的苯并[ cd ]吲哚-3-(1H)-一环系统3的访问。在酮存在下进行定向邻位锂化,然后进行甲酰化,最后进行酸催化的甲醇分解,完成了合成。还报道了针对存在于HKI 0231A(1a)中的内酰胺缩醛官能团的构建和反应性的研究。
Herein, we report a safe and economical multigramsynthesis of 6-fluoromenadione, an intermediate in the synthesis of novel biologically active agents. The key to this six-step sequence process involves the condensation of the readily available starting 4′-fluoropropiophenone and glyoxylic acid, a bromination–elimination sequence from 7-fluoro-3-methyltetral-1-one allowing aromatization of the naphthol
Pd-Catalyzed Semmler–Wolff Reactions for the Conversion of Substituted Cyclohexenone Oximes to Primary Anilines
作者:Wan Pyo Hong、Andrei V. Iosub、Shannon S. Stahl
DOI:10.1021/ja4073172
日期:2013.9.18
Homogeneous Pd catalysts have been identified for the conversion of cyclohexenone and tetralone O-pivaloyl oximes to the corresponding primary anilines and 1-aminonaphthalenes. This method is inspired by the Semmler-Wolff reaction, a classic method that exhibits limited synthetic utility owing to its forcing conditions, narrow scope, and low product yields. The oxime N-O bond undergoes oxidative addition to Pd-0(PCy3)(2), and the product of this step has been characterized by X-ray crystallography and shown to undergo dehydrogenation to afford the aniline product.
Dhekne; Bhide, Journal of the Indian Chemical Society, 1951, vol. 28, p. 504
作者:Dhekne、Bhide
DOI:——
日期:——
Roy; Rahman; Islam, Journal of Chemical Research - Part S, 2003, # 9, p. 594 - 596