Au(I)-Catalyzed Oxidative Functionalization of Yndiamides
作者:Zixuan Tong、Olivia L. Garry、Philip J. Smith、Yubo Jiang、Steven J. Mansfield、Edward A. Anderson
DOI:10.1021/acs.orglett.1c01625
日期:2021.6.18
doubly nitrogenated two carbon building blocks. Here we report a gold-catalyzed oxidative functionalization of yndiamides to access unnatural aminoacidderivatives, using a wide range of nucleophiles as a source of the aminoacid side chain. The transformation proceeds under mild conditions, is highlyfunctional group tolerant, and displays excellent regioselectivity through subtle steric differentiation
Synthesis of Polysubstituted Fused Pyrroles by Gold-Catalyzed Cycloisomerization/1,2-Sulfonyl Migration of Yndiamides
作者:Philip J. Smith、Yubo Jiang、Zixuan Tong、Helena D. Pickford、Kirsten E. Christensen、Jeremy Nugent、Edward A. Anderson
DOI:10.1021/acs.orglett.1c02360
日期:2021.8.20
be achieved using Au(I) catalysis that proceeds at ambient temperature, and a thermally promoted process. The utility of the products is demonstrated by a range of reactions to functionalize the fusedpyrrole core.
炔二酰胺(双 N 取代的炔烃)是氮杂环的宝贵前体。在这里,我们报告了炔基-炔二酰胺的环异构化/1,2-磺酰基迁移以形成四氢吡咯并吡咯,这是前所未有的与药物化学相关的杂环支架。这种耐受官能团的转化可以使用在环境温度下进行的 Au(I) 催化和热促进过程来实现。通过一系列反应来使稠合吡咯核功能化,证明了这些产品的实用性。
Copper-Catalyzed Synthesis and Applications of Yndiamides
作者:Steven J. Mansfield、Kirsten E. Christensen、Amber L. Thompson、Kai Ma、Michael W. Jones、Aroonroj Mekareeya、Edward A. Anderson
DOI:10.1002/anie.201706915
日期:2017.11.13
The firstsyntheticroute to yndiamides, a novel class of double aza‐substituted alkyne, has been established by the copper(I)‐catalyzed cross‐coupling of 1,1‐dibromoenamides with nitrogen nucleophiles. The utility of these compounds is demonstrated in a range of transition‐metal‐catalyzed and acid‐catalyzed transformations to afford a wide variety of 1,2‐diamide functionalized products.
High-Yield Formation of Substituted Tetracyanobutadienes from Reaction of Ynamides with Tetracyanoethylene
作者:Marie Betou、Nicolas Kerisit、Esme Meledje、Yann R. Leroux、Claudine Katan、Jean-François Halet、Jean-Claude Guillemin、Yann Trolez
DOI:10.1002/chem.201402653
日期:2014.7.28
A high‐yielding sequence of [2+2] cycloaddition–retroelectrocyclization of ynamides with tetracyanoethylene (TCNE) is described. The reaction provided tetracyanobutadiene (TCBD) species, which were characterized by various techniques. DFT and TD‐DFT calculations were also performed to complement experimental findings.
Introducing a New Class of <i>N-</i>Phosphoryl Ynamides via Cu(I)-Catalyzed Amidations of Alkynyl Bromides
作者:Kyle A. DeKorver、Mary C. Walton、Troy D. North、Richard P. Hsung
DOI:10.1021/ol201947b
日期:2011.9.16
We describe here the first synthesis of N-phosphoryl ynamides featuring C- and P-chirality via copper(I)-catalyzed amidative cross-couplings between phosphoramidates and phosphordiamidates with alkynyl bromides. Also featured is a tandem aza-Claisen-hetero-[2 + 2] cycloaddition for the synthesis of N-phosphoryl azetidin-2-imines.