A new method for converting 1,2,3,5,6,10b-hexahydropyrrolo[2,1-a]isoquinolines into 5,6-dihydropyrrolo[2,1-a]isoquinolines using N-bromosuccinimide as an oxidant is presented.
A new method for converting 1,2,3,5,6,10b-hexahydropyrrolo[2,1-a]isoquinolines into 5,6-dihydropyrrolo[2,1-a]isoquinolines by the use of N-bromosuccinimide as an oxidant is presented. azomethine ylides - cycloadditions - oxidation - pyrroles
A facile synthesis of novel polycyclic spiropyrrolidine oxindoles incorporating the 1,3-dipolar cycloaddition of azomethine ylides
作者:Krisztina E. Treuerne Balázs、Márk Molnár、Zoltán Madarász、Miklós Nyerges
DOI:10.1080/00397911.2020.1799011
日期:2020.11.1
Abstract This study describes the synthesis of novel polycyclic spiropyrrolidine oxindoles through the 1,3-dipolarcycloaddition of azomethineylides generated in situ with 3-(arylmethylene)-indolin-2-ones. Effect of substituents of azomethineylides and various dipolarophiles on reactivity, as well as on the products regio- and stereoselectivity was investigated. Graphical Abstract
New reactions of 3,4‐dihydro‐6,7‐dimethoxyisoquinoline ylide with nitrile derivatives
作者:Márk Molnár、Krisztina E. Treuerne Balázs、Zoltán Madarász、Miklós Nyerges
DOI:10.1002/jhet.4496
日期:2022.9
Novel examples for dipolar cycloaddition of isoquinolinium ylides to nitriles leading to new imidazo[2,1-a]isoquinolines were described and the potential of this reaction in synthetic chemistry was explored. As a by-product of this research, a number of N-substituted, 3,4-dihydro-1H-isoquinoline-1-carbonitriles were synthesized by a simple, efficient reaction of a series of isoquinolinium bromides
描述了异喹啉叶立德与腈的偶极环加成产生新的咪唑并[2,1- a ]异喹啉的新例子,并探索了该反应在合成化学中的潜力。作为本研究的副产品,通过一系列异喹啉溴化物和氰基甲酸乙酯在存在下进行简单、高效的反应,合成了许多N-取代的 3,4-二氢-1 H-异喹啉-1-甲腈。三乙胺。