Cyclocarbonylation-Iodination of terminal alkynes with ketones and ICl via 1,2-migration
作者:K. Mahesh Kumar、Tabassum Khan、Abdulrahman I. Almansour、Natarajan Arumugam、Srinivasarao Yaragorla
DOI:10.1016/j.tetlet.2020.152374
日期:2020.9
A simple, three-component, one-pot, room-temperature reaction of cyclocarbonylation-iodination is developed from terminalalkynes, ketones, and ICl. The reaction proceeds through the formation of 3°-propargyl alcohols and a subsequent 1,2-shift lead to the formation of β-iodo-α,β-unsaturated cyclic and acyclic ketones in good yields. In the case of cyclic ketones, the products are obtained with ring
Poly[styrene(iodosodiacetate)]-Promoted Ring Expansion Reaction of 1-Alkynylcycloalkanols: A Novel Synthesis of (<i>Z</i>)-2-(1-Iodo-1-organyl)methylenecycloalkanones
作者:Xian Huang、Jiang-Min Chen
DOI:10.1055/s-2004-831214
日期:——
The ringexpansion reaction of 1-alkynylcycloalkanols with poly[styrene(iodosodiacetate)] and iodine affords (Z)-2-(1-iodo-1-organyl)methylenecycloalkanones in moderate to good yields.