已开发出一种有效的铜催化级联环化反应,用于选择性合成各种苯并[4,5]咪唑并[2,1- a ]异喹啉衍生物。该反应特征在于依次形成三个不同的C N键。在存在Cu(OAc)2和KO t Bu的情况下,邻炔基苯甲腈和2-碘苯胺能顺利进行,以中等至良好的产率获得相应的苯并[4,5]咪唑并[2,1- a ]异喹啉。
We report an efficient approach to synthesize sulfonated indenones via a radical cascade cyclization of 2-alkynylbenzonitriles with sodium arylsulfinates.
我们报告了一种高效的方法,通过2-炔基苯甲腈与苯基亚磺酸钠的自由基级联环化合成磺化吲哚酮。
An efficient and convenient protocol for the synthesis of tetracyclic isoindolo[1,2-a]quinazoline derivatives
作者:M. V. Madhubabu、R. Shankar、Satish. S. More、Mandava V. Basaveswara Rao、U. K. Syam Kumar、A. Raghunadh
DOI:10.1039/c5ra28097d
日期:——
A convenient and one-pot synthesis of tetracyclic isoindolo [1,2-a]quinazoline derivatives via Lewis acid mediated sequential C–N bond formation reactions is reported. This protocol provides a simple and rapid strategy for the synthesis of 12-benzylidene-10,12-dihydroisoindolo[1,2-b]quinazoline derivatives. However, a variety of tetracyclo indole fused quinazoline motifs were synthesized in good yields
据报道,通过路易斯酸介导的顺序C–N键形成反应,可以方便地一锅合成四环异吲哚并[1,2- a ]喹唑啉衍生物。该协议为合成12-亚苄基-10,12-二氢异吲哚并[1,2- b ]喹唑啉衍生物提供了一种简单而快速的策略。但是,以高收率合成了多种四环吲哚稠合的喹唑啉基序。
Synthesis of Naphthalene Amino Esters by the Blaise Reaction of <i>o</i>-Alkynylarenenitriles
作者:Karuppusamy Sakthivel、Kannupal Srinivasan
DOI:10.1021/jo500137m
日期:2014.4.4
The action of a Reformatsky reagent on o-alkynylarenenitriles provides a convenient access to naphthalene amino esters via tandem 6-endo-dig carbannulation of in situ generated Blaise reaction intermediates. The products are formed in moderate to good yields with high chemo- and regioselectivity.
A Novel Anionic Domino Process for the Synthesis of <i>o</i>-Cyanoaryl-Methylthio/Alkyl/Aryl/Heteroaryl Acetylenes
A novel unexpected anionic domino process involving n-BuLi-induced rearrangement of 3,3-bis(methylthio) or 3-methylthio-3-aryl/heteroaryl/alkyl-o-bromoarylacrylonitriles to o-cyanoarylacetylenes in synthetically useful yields has been reported. The scope and generality of the reaction has been examined, and a possible mechanism has been proposed.
Selective synthesis of benzo[4,5]imidazo[2,1-a]isoquinolines via copper-catalyzed tandem annulation of alkynylbenzonitriles with 2-Iodoanilines
作者:Xiaodong Liu、Guobo Deng、Yun Liang
DOI:10.1016/j.tetlet.2018.06.030
日期:2018.7
efficient copper-catalyzed cascade cyclization reaction for selectively synthesizing a variety of benzo[4,5]imidazo[2,1-a]isoquinoline derivatives has been developed. The reaction features the formation of three different CN bonds in sequence. In the presence of Cu(OAc)2 and KOtBu, o-alkynylbenzonitriles and 2-iodoanilines proceeded smoothly to obtain the corresponding benzo[4,5]imidazo[2,1-a]isoquinolines
已开发出一种有效的铜催化级联环化反应,用于选择性合成各种苯并[4,5]咪唑并[2,1- a ]异喹啉衍生物。该反应特征在于依次形成三个不同的C N键。在存在Cu(OAc)2和KO t Bu的情况下,邻炔基苯甲腈和2-碘苯胺能顺利进行,以中等至良好的产率获得相应的苯并[4,5]咪唑并[2,1- a ]异喹啉。