Substrate or Solvent-Controlled Pd<sup>II</sup>
-Catalyzed Regioselective Arylation of Quinolin-4(1<i>H</i>
)-ones Using Diaryliodonium Salts: Facile Access to Benzoxocine and Aaptamine Analogues
作者:Manish K. Mehra、Shivani Sharma、Krishnan Rangan、Dalip Kumar
DOI:10.1002/ejoc.202000013
日期:2020.5.3
Substrate or solvent controlled regioselective C3, C5, and C8 arylation of quinolin‐4(1H)‐ones with diaryliodoniumsalts have been successfully achieved in high yields (up to 96 %). These protocols are applicable to a wide range of quinolone related heterocycles and provide potential access to naturally occurring benzoxocine and aaptamineanalogues
AgSbF6-controlled diastereodivergence in alkyne hydroarylation: facile access to Z- and E-alkenyl arenes
作者:Minsik Min、Donghee Kim、Sungwoo Hong
DOI:10.1039/c4cc03602f
日期:——
AgSbF6-controlled diastereodivergent hydroarylation reactions were developed. Unprecedented and remarkable switching of the E/Z-stereoselectivity could be obtained by adjusting the AgSbF6 loading.
Iridium(III)-Catalyzed Regiocontrolled Direct Amidation of Isoquinolones and Pyridones
作者:Debapratim Das、Rajarshi Samanta
DOI:10.1002/adsc.201701244
日期:2018.1.17
Iridium(III)‐catalyzed highly regiocontrolled C3/C8 amidation of isoquinolones and C6 amidation of 2‐pyridones has been successfully accomplished with various azides. The optimized method is operationally simple with a broad substrate scope. The protocol has been found to be scalable.
Synthesis of Bridged Benzazocines and Benzoxocines by a Titanium-Catalyzed Double-Reductive Umpolung Strategy
作者:Plamen Bichovski、Thomas M. Haas、Daniel Kratzert、Jan Streuff
DOI:10.1002/chem.201405852
日期:2015.2.2
A sequence of two titanium(III)‐catalyzed reductive umpolung reactions is reported that allows the rapid construction of benzazo‐ and benzoxozine building blocks. The first step is a reductive cross‐coupling of quinolones or chromones with Michael acceptors. This reaction proceeds with complete syn‐selectivity for the quinolone functionalization while the anti‐diastereomers are obtained as the major
Direct conjugate alkylation of α,β-unsaturated carbonyls by Ti<sup>III</sup>-catalysed reductive umpolung of simple activated alkenes
作者:Plamen Bichovski、Thomas M. Haas、Manfred Keller、Jan Streuff
DOI:10.1039/c5ob02631h
日期:——
The titanium(III)-catalysed cross-selective reductive umpolung of Michael-acceptors represents a unique direct conjugate β-alkylation reaction. It allows the cross-selective preparation of 1,6- and 1,4-difunctionalised building blocks without the requirement of stoichiometric organometallic reagents. In this full paper, the development and scope of the titanium(III)-catalysed cross-selective reductive