Rhodium(II)‐Catalyzed Intramolecular Annulation of 1‐Sulfonyl‐1,2,3‐Triazoles with Pyrrole and Indole Rings: Facile Synthesis of N‐Bridgehead Azepine Skeletons
作者:Jin‐Ming Yang、Cheng‐Zhi Zhu、Xiang‐Ying Tang、Min Shi
DOI:10.1002/anie.201400881
日期:2014.5.12
method has been developed to construct highly functionalized N‐bridgeheadazepineskeletons, which are of great importance in biological and pharmaceutical industry. The reaction proceeds through a rhodium(II) azavinyl carbene intermediate, which initiated the intramolecular CH functionalization with pyrrolyl and indolyl rings. A variety of azepine derivatives were obtained in moderate to good yields under
polycyclic indoline-annulated normal to medium-size rings through dearomatization of indole via a tandem 1,2-acyloxy migration/intramolecular [3 + 2] cycloaddition process is described. The pentacyclic skeleton of strychnine could be synthesized via this tandemcycloaddition and a further Mannich reaction. This approach would provide a novel strategy to the synthesis of strychons alkaloids.
Herein, we report a facile and efficientsynthetic method to construct azepino[1,2-a]indoles through a novel gold(I)-catalyzed intramolecular hydroarylation of alkynylindoles. A wide range of functional groups can be well tolerated in this transformation, and the corresponding highly functionalized azepino[1,2-a]indole skeletons were obtained in moderate to excellent yields. Subsequent oxidation of
在此,我们报道了一种简便有效的合成方法,通过一种新型金(I)催化的炔基吲哚分子内加氢芳基化来构建 azepino[1,2- a ]indoles。在该转化过程中可以很好地耐受多种官能团,并且以中等至优异的产率获得了相应的高度官能化的氮杂[1,2- a ]吲哚骨架。随后的产物氧化得到了有趣且有价值的多环咔唑,它们被广泛用作材料科学的关键组成部分。
Palladium(II)-Catalyzed Intramolecular [2 + 2 + 2] Annulation of Indolyl 1,3-Diynes: Construction of Azepino-Fused Carbazoles
作者:Meng-Lian Yao、Xiao-Yuan Wang、Guang-Chao Feng、Ji-Kai Liu、Bin Wu、Jin-Ming Yang
DOI:10.1021/acs.orglett.3c01186
日期:2023.6.30
A novel palladium(II)-catalyzedintramolecular [2 + 2 + 2] annulation of indolyl 1,3-diynes is described in this contribution. A variety of azepino-fused carbazoles are obtained in moderate to excellent yields. The key to the success of this transformation is the use of a carboxylic acid as an additive. This protocol features broad functional group tolerances, easy handling in air, and 100% atom economy