Cationic Palladium(II)-Catalyzed Highly Enantioselective Tandem Reactions of ortho-Boronate-Substituted Cinnamic Ketones and Internal Alkynes: A Convenient Synthesis of Optically Active Indenes
摘要:
Cationic palladium(II)-catalyzed tandem reactions of ortho-boronate-substituted cinnamic ketones and internal alkynes to yield optically active indenes were developed in high yields and good enantioselectivities.
Cationic Palladium(II)-Catalyzed Highly Enantioselective Tandem Reactions of ortho-Boronate-Substituted Cinnamic Ketones and Internal Alkynes: A Convenient Synthesis of Optically Active Indenes
摘要:
Cationic palladium(II)-catalyzed tandem reactions of ortho-boronate-substituted cinnamic ketones and internal alkynes to yield optically active indenes were developed in high yields and good enantioselectivities.
Synthesis of 6-Substituted Phenanthridine Derivatives by Palladium-Catalysed Domino Suzuki-Miyaura/Aza-Michael Reactions
作者:Xiaobo Bao、Wei Yao、Qihua Zhu、Yungen Xu
DOI:10.1002/ejoc.201402913
日期:2014.11
An efficient method for the synthesis of 6-substitutedphenanthridinederivatives has been developed through a one-pot process involving a sequence of palladium-catalysedSuzuki–Miyaurareaction followed by intramolecular aza-Michael addition. This method is applicable to the synthesis of a wide range of substituted phenanthridines from simple substrates.
Synthesis of Indenyl Triazenes by Rhodium-Catalyzed Annulation Reactions
作者:Carl T. Bormann、Florian G. Abela、Rosario Scopelliti、Farzaneh Fadaei-Tirani、Kay Severin
DOI:10.1002/ejoc.202000195
日期:2020.4.16
Rh‐catalyzed [3+2] annulation reactions of arylboronic acid derivatives and alkynyl triazenes, which provide access to functionalized indenyl triazenes, are described. The regioselectivity of the annulations is mostly high, but strongly dependent on the substituents on the alkyne
A rhodium-catalyzed tandem arylation/cyclization reaction of 3-(ortho-boronated aryl) conjugated enones with unactivated alkynes is reported. By using a rhodium(I)/chiral-diene complex as the catalyst, the protocol was processed smoothly to provide various 2,3-disubstituted indene compounds in high yields with excellent regioselectivities and enantioselectivities. The approach outlined herein is appealing
Rhodium-Catalyzed Annulation of Ynamides with Bifunctional Arylboron Reagents
作者:Benoit Gourdet、Mairi E. Rudkin、Hon Wai Lam
DOI:10.1021/ol100769p
日期:2010.6.4
Annulation of ynamides with arylboronic acids or esters containing an electrophilic functional group at the ortho-position proceeds under the action of rhodium catalysis to generate 2-amidoindenols or 2-amidoindenes, usually with good regioselectivity,