Domino Aryne Annulation via a Nucleophilic–Ene Process
摘要:
1,2-Benzdiyne equivalents possess the unique property that they can react with two arynophiles through iteratively generated 1,2- and 2,3-aryne intermediates. Upon rational modification on the second leaving group of these aryne precursors, a domino aryne annulation approach was developed through a nucleophilic-ene reaction sequence. Various benzo-fused N-heterocyclic frameworks were achievable under transition metal-free conditions with a broad substrate scope.
Untersuchungen über aromatische Amino-<i>Claisen</i>-Umlagerungen
作者:Synèse Jolidon、Hans-Jürgen Hansen
DOI:10.1002/hlca.19770600329
日期:1977.4.20
Investigations on Aromatic Amino-Claisen Rearrangements
芳香族氨基克莱森重排的研究
Revitalizing the aromatic aza-Claisen rearrangement: implications for the mechanism of ‘on-water’ catalysis
作者:Kaitlin D. Beare、Christopher S. P. McErlean
DOI:10.1039/c3ob40118a
日期:——
been the poor relation of its oxygen counterpart. We demonstrate that on-watercatalysis facilitates the rearrangement of reverse N-prenylated naphthylamines and anilines, and transforms the aromatic aza-Claisen rearrangement into a synthetically viable reaction. We use this reaction to probe the mechanism of on-watercatalysis, and provide compelling support for the acid-catalysis hypothesis.
Domino Aryne Annulation via a Nucleophilic–Ene Process
作者:Hai Xu、Jia He、Jiarong Shi、Liang Tan、Dachuan Qiu、Xiaohua Luo、Yang Li
DOI:10.1021/jacs.8b01005
日期:2018.3.14
1,2-Benzdiyne equivalents possess the unique property that they can react with two arynophiles through iteratively generated 1,2- and 2,3-aryne intermediates. Upon rational modification on the second leaving group of these aryne precursors, a domino aryne annulation approach was developed through a nucleophilic-ene reaction sequence. Various benzo-fused N-heterocyclic frameworks were achievable under transition metal-free conditions with a broad substrate scope.
Synthesis of α,α-Disubstituted Aryl Amines by Rhodium-Catalyzed Amination of Tertiary Allylic Trichloroacetimidates
作者:Jeffrey S. Arnold、Gregory T. Cizio、Hien M. Nguyen
DOI:10.1021/ol202313y
日期:2011.10.21
The rhodium-catalyzed regioselective amination of tertiary allylic trichloroacetimidates with unactivated aromatic amines is a direct and efficient approach to the preparation of α,α-disubstituted allylic aryl amines in good yield and with excellent regioselectivity. This method is applicable to a variety of unactivated primary and secondary amines and allows for the preparation of reverse prenylated