A convenient access to allylic triflones with allenes and triflyl chloride in the presence of (EtO)<sub>2</sub>P(O)H
作者:Jixiang Ni、Yong Jiang、Zhenyu An、Jingfeng Lan、Rulong Yan
DOI:10.1039/c9cc03096d
日期:——
A simple method for the preparation of allylic triflones from allenes and triflyl chloride in the presence of (EtO)2P(O)H has been developed. The features of this reaction are catalyst-free and simple starting substrates. This method tolerates diverse functional groups and substituted allylic triflones are obtained in moderate to good yields.
The reaction of biphenyl-alkynes with in situ generated Tf2C=CH2 followed by neutralization gave polycyclicaromatichydrocarbons (PAHs) decorated by a highly stabilized carbanionic functionality. Thus obtained PAHs showed improved solubility in both aqueous and organic solvents.
的反应联苯炔烃与原位产生的TF 2 C = CH 2,然后中和,得到由高度稳定的负碳离子的功能的装饰多环芳香烃(PAHs)。由此获得的多环芳烃在水性和有机溶剂中均显示出改善的溶解度。
Carbon–Carbon Bond Formation via the Electrophilic Addition of Carbocations to Allenes
作者:Bo Meng、Shengming Ma
DOI:10.1021/ol3006985
日期:2012.6.1
A novel electrophilic addition of aryl-substituted allenes and carbocationsforming a carbon–carbonbond is described. Stereodefined allylic halides and indenes were furnished with excellent regio- and stereoselectivity depending on the structure of allenes.
The reactions of 1,1-diarylallenes with N-acyliminium cations generated from hydroxylactams
作者:Anna G. Larina、Alexander S. Filatov、Vitalii V. Suslonov、Alexander P. Molchanov、Alexander V. Stepakov
DOI:10.1016/j.tet.2017.05.071
日期:2017.7
6a-dihydroisoindolo[2,1-a]quinolin-11(5H)-ones were prepared by BF3·OEt2-mediated reactions of 1,1-diarylallenes with the N-acyliminium cations generated from 2-aryl-3-hydroxyisoindolin-1-ones. 2-Aryl-3-(3-aryl-1H-inden-2-yl)isoindolin-1-ones underwent an intramolecular cyclization on treatment with methanesulfonic acid with the formation of compounds exhibiting the indeno[2,1-c]isoindolo[2,1-a]quinoline skeleton
描述了1,1-二芳基烯与N-酰基亚胺阳离子反应的第一个例子。2-芳基-3-(3-芳基-1 H-茚满-2-基)异吲哚啉-1-酮和6-亚甲基-5,5-二芳基-6,6a-二氢异吲哚并[2,1- a ]喹啉-通过BF 3 ·OEt 2介导的1,1-二芳基亚芳基与由2-芳基-3-羟基异吲哚啉-1-酮生成的N-酰基亚胺阳离子的反应制备了11(5 H)-ones。用甲磺酸处理2-芳基-3-(3-芳基-1 H-茚满-2-基)异吲哚啉-1-酮并进行分子内环化反应,形成具有茚并[2,1- c ]异吲哚基的化合物[2,1- a]喹啉骨架。
AlBr<sub>3</sub>-Mediated Tandem Cyclization–Carboxylation of Allenylbenzenes with CO<sub>2</sub> in the Presence of Pyridines
Indene-2-carboxylic acids are prepared from allenylbenzenes and CO2 by an AlBr3-mediated tandem reaction consisting of intramolecular Friedel–Crafts alkylation of allenylbenzenes and subsequent car...