Synthesis of the antitumoural agent batracylin and related isoindolo[1,2-b]quinazolin-12(10H)-ones
作者:Carlos M. Martínez-Viturro、Domingo Domínguez
DOI:10.1016/j.tetlet.2006.11.168
日期:2007.2
The synthesis of batracylin and related isoindolo[1,2-b]quinazolin-12-ones from easily accessible o-acylanilines is reported. The preparation of these tetracyclic compounds through a Mitsunobu reaction followed by spontaneous cyclodehydration shows the ability of this methodology to afford good yields of a wide variety of diversely 7, 8, 9, 10-substituted isoindoloquinazolinones in two steps.
据报道,从容易获得的邻苯丙氨酸类化合物中合成巴统西林和相关的异吲哚并[1,2 - b ]喹唑啉-12-酮。通过Mitsunobu反应然后自发环脱水制备这些四环化合物,表明该方法能够分两步提供多种多样的7、8、9、10取代异吲哚并喹唑啉酮的良好收率。
Synthesis of Polysubstituted Quinolines from α-2-Aminoaryl Alcohols Via Nickel-Catalyzed Dehydrogenative Coupling
作者:Sanju Das、Debabrata Maiti、Suman De Sarkar
DOI:10.1021/acs.joc.7b03198
日期:2018.2.16
This study reports a nickel-catalyzed sustainable synthesis of polysubstitutedquinolines from α-2-aminoaryl alcohols by a sequential dehydrogenation and condensation process that offers the advantages of a low catalyst loading and wide substrate scope. In contrast to earlier reported methods, this strategy allows the use of both primary as well as secondary α-2-aminoaryl alcohols in combination with
The Mills reaction and cyclization of readily available 2‐aminobenzyl alcohols and nitrosobenzenes using thionyl bromide provided 2H‐indazoles in up to 88 % yields. In the metal‐free process, acetic acid played a crucial role for the both Mills reaction and cyclization. A brominated 2H‐indazole could also be obtained through the one‐pot sequence.
Synthesis of Stannylated Aryl Imines and Amines
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Aryne Insertion Reactions into Sn−N Bonds
作者:Eva Kran、Christian Mück‐Lichtenfeld、Constantin G. Daniliuc、Armido Studer
DOI:10.1002/chem.202101124
日期:2021.6.25
The reaction of in situ generated arynes with stannylated imines to provide ortho-stannyl-aniline derivatives is reported. The readily prepared trimethylstannyl benzophenone imine is introduced as an efficient reagent to realize the aryne σ-insertion reaction. The imine functionality is an established N-protecting group and insertions proceed with good yields and good to excellent regioselectivities
报道了原位生成的芳烃与甲锡烷基化亚胺反应以提供邻-甲锡烷基-苯胺衍生物。引入容易制备的三甲基甲锡烷基二苯甲酮亚胺作为实现芳炔σ-插入反应的有效试剂。亚胺官能团是一个已建立的 N 保护基团,插入以良好的产率和良好的区域选择性进行。由于三甲基甲锡烷基部分提供了丰富的化学,产品苯胺是后续化学的宝贵起始材料。
Unexpected Annulation between 2-Aminobenzyl Alcohols and Benzaldehydes in the Presence of DMSO: Regioselective Synthesis of Substituted Quinolines
alcohols, benzaldehydes, and DMSO to quinolines has been disclosed. For the reported annulation between 2-aminobenzyl alcohols and benzaldehydes, the change of the solvent from toluene to DMSO led to the change of the product from the diheteroatomic cyclic benzoxazines to monoheteroatomic cyclic quinolines. This annulation can be used to synthesize regioselectively different substituted quinolines