基于我们的初步研究,使用开发的无碱方法,邻卤代苯甲酸甲酯与氮杂双环烯烃的环化反应可高效进行,从而以良好或优异的收率获得相应的苯并[ c ]菲啶衍生物。37个应用示例验证了本策略与不同组的兼容性,尤其是与电子缺乏的组的兼容性,这些组很难使用其他传统方法访问。另外,与非对称氮杂双环烯烃的环化反应以高区域选择性实现。
Palladium-catalyzed intramolecular carbopalladation onto allenamides completed by direct C–H allylation of heterocycles is studied. The domino construction/heteroarylation of isoquinolone process is first achieved. A general three-step one-pot strategy, involving in situ generation of allenamide, π-allyl-Pd complex generation, and interception with heteroarenes, has been subsequently set up. This methodology
An efficient synthesis of dihydrobenzo[c]phenanthridinones was achieved by utilizing an indium(0)-mediated intramolecular cyclization reaction under ligand- and base-free conditions. A variety of functional groups were tolerated in the present protocol.
通过在无配体和无碱条件下利用铟(0)介导的分子内环化反应,实现了二氢苯并[ c ]菲啶酮的有效合成。在本协议中可以容忍多种功能基团。
Copper-Catalyzed C(sp<sup>3</sup>)–S Bond and C(sp<sup>2</sup>)–S Bond Cross-Coupling of 2-(2-Iodobenzoyl) Substituted or 2-(2-Iodobenzyl) Substituted 1,2,3,4-Tetrahydroisoquinolines with Potassium Sulfide: Synthesis of Isoquinoline-Fused 1,3-Benzothiazine Scaffolds
作者:Pan Dang、Zhilei Zheng、Yun Liang
DOI:10.1021/acs.joc.6b02943
日期:2017.2.17
efficient and simple strategy to construct the corresponding benzothiazinederivatives via formation of C(sp3)–S bond and C(sp2)–S bond, which the C–S bonds formed via different routes in this reaction (traditional cross-coupling reaction via the cleavage of C–I bond and oxidative cross-coupling reaction via C(sp3)–H bond functionalization).
Ni-Catalyzed Alkene Carboacylation via Amide C–N Bond Activation
作者:James A. Walker、Kevin L. Vickerman、Jenna N. Humke、Levi M. Stanley
DOI:10.1021/jacs.7b06191
日期:2017.8.2
We report Ni-catalyzed formal carboacylation of o-allylbenzamides with arylboronic acid pinacol esters. The reaction is triggered by oxidative addition of an activated amide C–N bond to a Ni(0) catalyst and proceeds via alkene insertion into a Ni(II)–acyl bond. The exo-selective carboacylation reaction generates 2-benzyl-2,3-dihydro-1H-inden-1-ones in moderate to high yields (46–99%) from a variety