Synthesis of<i>o</i>-(Dimethylamino)aryl Ketones and Acridones by the Reaction of 1,1-Dialkylhydrazones and Arynes
作者:Anton V. Dubrovskiy、Richard C. Larock
DOI:10.1021/ol2016803
日期:2011.8.5
A novel, efficient route to biologically and pharmaceutically important o-(dimethylamino)aryl ketones and acridones has been developed starting from readily available 1,1-dimethylhydrazones of aldehydes and o-(trimethylsilyl)aryl triflates. The reaction proceeds under mild conditions, tolerates a wide range of functional groups, and provides the final products in good to excellent yields.
New functional wittig reagent for the formylolefination of aldehydes and ketones
作者:Henri-Jean Cristau、Marie-Bénédicte Gasc
DOI:10.1016/s0040-4039(00)94550-7
日期:1990.1
Wittig's reagent for n + 2 homologation of aldehydes and ketones into α, β-unsaturated aldehydes via the corresponding hydrazones is described.
描述了用于通过相应的n将醛和酮n + 2均化为α,β-不饱和醛的Wittig试剂。
Synthesis of <i>o</i>-(Dimethylamino)aryl Ketones, Acridones, Acridinium Salts, and 1<i>H</i>-Indazoles by the Reaction of Hydrazones and Arynes
作者:Anton V. Dubrovskiy、Richard C. Larock
DOI:10.1021/jo302378w
日期:2012.12.21
A novel, efficient route to biologically and pharmaceutically important o-(dimethylamino)aryl ketones, acridones, acridinium salts, and 1H-indazoles has been developed starting from readily available hydrazones of aldehydes and o-(trimethylsilyl)aryl triflates. The reaction proceeds through arynes under mild conditions, tolerates a wide range of functional groups, and provides the final products in
of 3-electron-withdrawing group substituted α-pyrones with α,β-unsaturated hydrazones as electron-rich counterparts are catalyzed by Eu(hfc)3 to afford bicyclic lactone cycloadducts. This is an example of umpolung cycloaddition based on functional transformation of carbonyls to hydrazones. A subsequent dehydrazonation reaction enables indirect synthesis of carbonyl group-containing bicyclic lactones
作者:Jeremy M. Davis、Richard J. Whitby、Albert Jaxa-Chamiec
DOI:10.1039/c39910001743
日期:——
1-Azadiene complexes of zirconocene were prepared by ligand exchange between zirconocene butene and the 1-azadiene, and by a C–H activation route from allylic amines; they are best described as 1-zircona-2-azacyclopent-3-enes and 5-unsubstituted examples are fluxional.