Palladium-catalyzed cascade carboesterification of norbornene with alkynes
作者:Wanqing Wu、Can Li、Jianxiao Li、Huanfeng Jiang
DOI:10.1039/c8ob01799a
日期:——
An efficient and convenient palladium-catalyzed cascade carboesterification of norbornenes (NBE) with alkynes has been accomplished to afford functionalized α-methylene γ-lactone and tetrahydrofuran derivatives in good to excellent yields. This new strategy exhibits excellent atom- and step-economy, good functional group tolerance and broad substrate scope. In particular, NBE-palladium species was
FORMYLATED XANTHOCILLIN ANALOGUES AS NEUROPROTECTIVE AGENTS
申请人:NEURON BIOPHARMA, S.A.
公开号:US20150011621A1
公开(公告)日:2015-01-08
Formylated xanthocillin analogs can be used in the treatment of neurodegenerative diseases. The analogs can be prepared synthetically, and at least some of the analogs can be obtained from a microorganism strain of the
Penicillium chrysogenum
species.
Copper‐Catalyzed Synthesis of α‐Trifluoromethylacrylates from Trifluoroborylacrylates
<i>via</i>
Stereoretentive Radical Trifluoromethylation
作者:Swetha Jos、Webster L. Santos
DOI:10.1002/adsc.202000937
日期:2021.1.19
We report the synthesis of α‐trifluoromethylacrylates from α‐trifluoroborylacrylates via a stereoretentive radical trifluoromethylation with inexpensive reagents NaSO2CF3 and TBHP at room temperature. Under these conditions, a wide substrate scope afforded the (E)‐diastereomer exclusively in moderate to good yield. The utility of the reaction products is demonstrated in the synthesis of phenyl‐4H‐pyran