method for the synthesis of trifluoromethyl CF3-substituted spirocyclic compounds containing with a unique quaternarycarboncenter from readily available starting materials has been developed. The reaction provides a facile access to 2H-azirines via cascade cyclization. These compounds constitute a new class of functionalized synthetic intermediates, which can be used for the synthesis of various nitrogen-containing
Synthesis of Indanones and Spiroindanones by Diastereoselective Annulation Based on a Hydrogen Autotransfer Strategy
作者:Yate Chen、Zhengtian Ding、Yiming Wang、Wenfeng Liu、Wangqing Kong
DOI:10.1002/anie.202013792
日期:2021.3
significant indanones and spiroindanone pyrrolidine derivatives in good yields with excellent regio‐ and diastereoselectivity. Preliminary mechanistic studies have shown that indanones are formed by the cyclization of o‐bromoaryl aldehydes and alkynes to form indenol intermediates, followed by hydrogen autotransfer.
Rhodium-Catalyzed Carbocyclization and Chlorosulfonylation of 1,6-Enynes with Sulfonyl Chlorides
作者:Chen Chen、Jianhua Su、Xiaofeng Tong
DOI:10.1002/chem.201204039
日期:2013.4.15
Linked in: A rhodium(I) catalyst system [[Rh(cod)Cl]+DPPF] enables carbocyclization and chlorosulfonylation of 1,6‐enynes with sulfonyl chlorides, thus allowing the formation of three different bonds (CCl, CC, and CS) in a one‐step fashion (see scheme; cod=cyclooctadiene, DPPF=1,1′‐bis(diphenylphosphino)ferrocene). Sulfonyl chlorides are shown to be an efficient linker in this transformation, which
Diastereo- and Enantioselective Construction of Spirocycles by Nickel-Catalyzed Cascade Borrowing Hydrogen Cyclization
作者:Zhengtian Ding、Yiming Wang、Wenfeng Liu、Yate Chen、Wangqing Kong
DOI:10.1021/jacs.0c10055
日期:2021.1.13
significant progress, the straightforward catalyticasymmetric assembly of spirocyclic scaffolds with multiple stereocenters from readily available starting materials remains a formidable challenge. Herein, we develop an unprecedented nickel-catalyzed one-pot synthesis of enantioenriched spiroindanones from easily available 1,6-enynes and o-formylarylboronic acids. The reaction proceeds smoothly under
Copper/Iron‐Cocatalyzed Cascade Perfluoroalkylation/Cyclization of 1,6‐Enynes with Iodoperfluoroalkanes
作者:Xiao‐Feng Xia、Jipan Yu、Dawei Wang
DOI:10.1002/adsc.201701258
日期:2018.2
with readily available iodoperfluoroalkanes reagents for the synthesis of the corresponding fluoroalkylated pyrrolidines and benzofuran derivatives is reported. This novel protocol provides a mild method for the construction of Csp3‐CF2 and exocyclicdoublebonds in one step with high regio‐ and stereo‐selectivities.