Silver-Catalyzed Intermolecular [3 + 2]/[5 + 2] Annulation of <i>N</i>-Arylpropiolamides with Vinyl Acids: Facile Synthesis of Fused 2<i>H</i>-Benzo[<i>b</i>]azepin-2-ones
作者:Yang Li、Ming Hu、Jin-Heng Li
DOI:10.1021/acscatal.7b02061
日期:2017.10.6
silver-catalyzed oxidative intermolecular [3 + 2]/[5 + 2] annulation of N-arylpropiolamides with 4-vinyl acids for producing fused 2H-benzo[b]azepin-2-ones is described. This radical-mediated annulation reaction features broad substrate scope and excellent selectivity, and enables the formation of three new C–C bonds through oxidative decarboxylation, [3 + 2]/[5 + 2] annulations, and C(sp2)-H functionalization
Decarbonylative Formation of Homoallyl Radical Capable of Annulation with <i>N</i>-Arylpropiolamides via Aldehyde Auto-oxidation
作者:Yang Li、Jin-Heng Li
DOI:10.1021/acs.orglett.8b02243
日期:2018.9.7
A new metal-free aldehyde auto-oxidation strategy that allows the decarbonylative formation of homoallyl radical capable of cascade annulations with alkynes is described. By using various N-arylpropiolamides, the oxidative radical [3 + 2]/[5 + 2] cascade annulation reaction was achieved to produce benzo[b]cyclopenta[e]azepin-4(1H)-ones, which represent a powerful new platform for the intermolecular
描述了一种新的无金属的醛自氧化策略,该策略允许脱羰基形成能够与炔烃级联成环的均烯丙基自由基。通过使用各种N-芳基丙酰胺,氧化自由基[3 + 2] / [5 + 2]级联环化反应生成苯并[ b ]环戊[ e ] azepin-4(1 H)-one,代表了用于炔烃分子间环加成的新平台,具有广泛的底物范围和高选择性。
Au(i)-catalyzed intramolecular oxidative cyclopropanation of 1,6-enynes derived from propiolamides with diphenyl sulfoxide
作者:Hyun-Suk Yeom、Seunghoon Shin
DOI:10.1039/c2ob27394b
日期:——
We have developed gold(I)-catalyzedoxidativecyclopropanation of 1,6-enynes derived from propiolamides employing diphenyl sulfoxide as an oxidant. 1,6-Enynes having a terminal alkyne and a propiolamide tether efficiently transformed into cyclopropane carboxaldehyde derivatives.