Highly diastereoselective synthesis of 3-methylenetetrahydropyrans by palladium-catalyzed oxa-[4 + 2] cycloaddition of 2-alkenylbenzothiazoles
作者:Xiaoxiao Song、Lei Xu、Qijian Ni
DOI:10.1039/d0ob01434f
日期:——
A highlydiastereoselectivesynthesis of 3-methylenetetrahydropyrans via palladium-catalyzed oxa-[4 + 2] cycloaddition of 2-alkenylbenzothiazoles with allyl carbonates bearing a nucleophilic alcohol side chain is presented. This synthetic methodology tolerates a wide variety of 2-alkenylbenzothiazoles and afforded the desired 3-methylenetetrahydropyrans in good yields and excellent dr. In addition
Palladium-catalyzed Oxa-[4+2] Annulation of <i>para</i>
-Quinone Methides
作者:Zhenbo Yuan、Rui Pan、He Zhang、Lina Liu、Aijun Lin、Hequan Yao
DOI:10.1002/adsc.201700978
日期:2017.12.11
palladium‐catalyzed oxa‐[4+2] annulation of para‐quinone methides with allyl carbonates bearing a nucleophilic alcohol side chain has been developed. This method provided an efficientstrategy to the construction of 2‐oxaspiro‐cyclohexadienones via 1,6‐conjugatedaddition‐mediated allylation in moderate to good yields. Preliminary results on asymmetric derivatives promised potential in the synthesis of enantioenriched
Palladium(0)-Catalyzed Intermolecular Allylic Dearomatization of Indoles by a Formal [4+2] Cycloaddition Reaction
作者:Run-Duo Gao、Qing-Long Xu、Bo Zhang、Yiting Gu、Li-Xin Dai、Shu-Li You
DOI:10.1002/chem.201602691
日期:2016.8.8
Bridged indoline derivatives were synthesized by an intermolecular Pd‐catalyzed allylic dearomatization reaction of substituted indoles. The reaction between indoles and allyl carbonates bearing a nucleophilic alcohol side‐chain proceeds in a cascade fashion, providing bridged indolines in excellent enantioselectivity.
Bis-Allylic Templates for Pd(0)-Catalyzed Solid Phase Synthesis of Tertiary Amines
作者:Zuzana Flegelová、Marcel Pátek
DOI:10.1021/jo960756+
日期:1996.1.1
Synthesis of Spirotetrahydrofuran Oxindoles via Palladium-Catalyzed [4 + 1] Cycloaddition of Diphenyl 2-Oxoindolin-3-yl Phosphates and 2-Methylidenetrimethylene Carbonate
作者:Yuming Li、Jiyang Jie、Hongyun Li、Haijun Yang、Hua Fu