An electrochemical protocol for the construction of substituted isoindolinones via reduction/amidation of 2-carboxybenzaldehydes and amines has been realized. Under metal-free and external-reductant-free electrolytic conditions, the reaction achieves the cascade formation of intermolecular C–N bonds and provides a series of isoindolinones in moderate to good yields. The deuterium-labeling experiment
TiCl4-Mediated Synthesis of 3,4-Hetero-Disubstituted Isocoumarins by Means of Isocyanide Insertion Reactions
作者:Laurent El Kaïm、Laurence Grimaud、Maxime Vitale、Sudipta Ponra、Aude Nyadanu、Sylvie Maurin
DOI:10.1055/s-0036-1591733
日期:2018.3
Abstract The isocyanideinsertion into sulfanyl-phthalides under Lewis acid conditions is reported with full details. This sequential three-component reaction affords a new straightforward and highly convenient method for the preparation of 3-amino-4-sulfanyl isocoumarins, the potential of which is still unexplored. The isocyanideinsertion into sulfanyl-phthalides under Lewis acid conditions is reported
Synthesis of 1‐(3
<i>H</i>
)isobenzofuranone compounds by tin powder promoted cascade condensation reaction
作者:Shangxian Wang、Ke‐Hu Wang、Bo Chang、Danfeng Huang、Yulai Hu
DOI:10.1002/aoc.6249
日期:2021.7
An efficient approach for the construction of phthalide compounds is developed through tin powder mediated cascade condensation reaction of 2-formylbenzoic acids with allyl bromides or α-bromoketone under mild reaction conditions. This method is easy to operate and can tolerate various functional groups to give the corresponding phthalides in good to excellent yields. The phthalides produced from α-bromoketone
通过锡粉介导的 2-甲酰基苯甲酸与烯丙基溴或α-溴酮在温和反应条件下的级联缩合反应,开发了一种有效的邻苯二甲酸酯化合物构建方法。该方法操作简单,可以耐受各种官能团,从而以良好到极好的收率得到相应的邻苯二甲酸酯。由α-溴酮生产的邻苯二甲酸酯可进一步转化为3,3a -dihydro -8 H -pyrazolo [5, l - a ]isoindol-8-one和8 H -pyrazolo[5, l- a ]isoindol-8-一。
Structure-based design of potent human dihydroorotate dehydrogenase inhibitors as anticancer agents
promising target for the treatment of immunological disease and cancer. Here, a succession of substituted hydrazino-thiazole derivatives were designed, synthesized, and biologically evaluated through structure-based optimization, of which compound 22 was the most potent inhibitor of hDHODH with an IC50 value of 1.8 nM. Furthermore, 22 exhibited much better antiproliferative activity than brequinar, both
Synthesis of chiral isoindolinones via asymmetric propargylation/lactamization cascade
作者:Jiao-Long Meng、Tang-Qian Jiao、Ya-Heng Chen、Rui Fu、Shu-Sheng Zhang、Qian Zhao、Chen-Guo Feng、Guo-Qiang Lin
DOI:10.1016/j.tetlet.2018.03.024
日期:2018.4
A Zn-mediated propargylation/lactamization cascade reaction with chiral 2-formylbenzoate derived N-tert-butanesulfinyl imines was realized, which provided a practical and efficient method for the synthesis of chiralisoindolinones. High diastereoselectivities (up to 97:3 dr) and good reaction yields were observed for most examined cases.