Tsuji-Wacker Oxidation of Terminal Olefins using a Palladium-Carbon Nanotube Nanohybrid
作者:Simon Donck、Edmond Gravel、Nimesh Shah、Dhanaji V. Jawale、Eric Doris、Irishi N. N. Namboothiri
DOI:10.1002/cctc.201500241
日期:2015.8.3
Palladium nanoparticles supported on carbon nanotubes were used in the Tsuji–Wacker oxidation. The palladium‐based nanohybrid was found to be very active in combination with cuprous chloride for the selective oxidation of terminal olefins into methyl ketones. The co‐catalytic system operates under very mild and sustainable conditions (room temperature, atmospheric pressure, low catalyst loading), as
Enantioselective synthesis of C-linked spiroacetal-triazoles as privileged natural product-like scaffolds
作者:Jui Thiang Brian Kueh、Ka Wai Choi、Margaret A. Brimble
DOI:10.1039/c2ob06802h
日期:——
The enantioselective synthesis of novel C-linked spiroacetal-triazoles 10 is reported. The key step involves reaction of acetylenic spiroacetal 11 with several azides by the Copper-Catalysed Azide–Alkyne Cycloaddition (CuAAC). The biologically privileged spiroacetal scaffold 11 was prepared from silyl-protected Weinreb amide 19 using several reliable Grignard additions and a highly diastereoselective enzymatic kinetic resolution.