Synthesis of Polysubstituted 2-Iodoindenes via Iodonium-Induced Cyclization of Arylallenes
作者:Charlotte Grandclaudon、Véronique Michelet、Patrick Y. Toullec
DOI:10.1021/acs.orglett.5b03634
日期:2016.2.19
2-iodoindenes. In acetonitrile or nitromethane, electrophilic sources of iodine cations react selectively with the C2–C3 double bond of 1-arylallenes to give, after anti nucleophilic attack of the aromatic ring, 2-iodoindene products in high yields. Variations of the allenic skeletons revealed the high 5-endo selectivity and some competitive pathways of cyclization. Postfunctionalization reactions of the carbon–iodine
A copper-based catalyst system for the direct coupling of polyfluoroarenes with propargyl phosphates has been developed. The catalysis can provide a rapid and concise access to (polyfluoroaryl)allenes, which can be important building blocks for the synthesis of fluorinated functional materials.
Palladium‐Catalyzed Desulfitative Cross‐Coupling Reaction of Sodium Sulfinates with Propargylic Carbonates
作者:Anni Qin、Guirong Zhu、Qin Chen、Hui Qian、Shengming Ma
DOI:10.1002/adsc.201900698
日期:2019.10.22
Desulfitative cross‐coupling of propargylic carbonates with sodium sulfinates has been observed. The reaction exhibited good functional group compatibility affording allenes as a single product. Potential anticancer activities of these allene products were also studied.
Silver-Catalyzed Efficient Synthesis of Vinylene Carbonate Derivatives from Carbon Dioxide
作者:Tohru Yamada、Rie Ugajin、Satoshi Kikuchi
DOI:10.1055/s-0033-1341047
日期:——
It was found that the silver salt and base was an efficient catalytic system for the reaction of the secondary propargylic alcohol with carbon dioxide to afford various corresponding vinylene carbonate derivatives in good to high yields under mild conditions.