Polycyclic bridgehead acetals with enol functionality: one-pot assembly from aliphatic ketones and acetylene in KOH/DMSO suspension
作者:Elena Yu. Schmidt、Ivan A. Bidusenko、Natalia A. Cherimichkina、Igor A. Ushakov、Boris A. Trofimov
DOI:10.1016/j.tet.2016.06.010
日期:2016.7
Aliphatic and cycloaliphatic ketones undergo selective multi-site cascade C–H functionalization with acetylene in the KOH/DMSO superbase suspension under mild conditions (70–80 °C, 0.5–1.0 h) to afford in one synthetic operation polycyclic bridgehead acetals with enol functionality, [methylene-6,8-dioxabicyclo[3.2.1]octanes] (the isolated yields reach 84%).
One-pot synthesis of 1-ethynylcyclohexyl vinyl ether from cyclohexanone and acetylene
作者:B. A. Trofimov、E. Yu. Shmidt、I. A. Bidusenko、E. V. Ivanova、N. V. Zorina、A. I. Mikhaleva
DOI:10.1134/s1070428012060188
日期:2012.6
Base-catalyzed O-vinylation of tertiary propargylic alcohols with acetylene: First examples
作者:Boris A. Trofimov、Elena Yu. Schmidt、Elena V. Skital’tseva、Ivan A. Bidusenko、Nadezhda V. Zorina、Al’bina I. Mikhaleva
DOI:10.1016/j.mencom.2012.03.002
日期:2012.3
1-Ethynylcyclohexanol and 1-ethynylcycloheptanol are O-vinylated with acetylene in KOH/DMSO superbase system (90°C, autoclave, initial acetylene pressure of 14 atm, 1 h) to afford the corresponding vinyl ethers in 40 and 34% yields, respectively.