Bis(enediyne) Macrocycles: Synthesis, Reactivity, and Structural Analysis
作者:Heather S Blanchette、Stephen C Brand、Hitoshi Naruse、Timothy J.R Weakley、Michael M Haley
DOI:10.1016/s0040-4020(00)00932-7
日期:2000.12
We describe below the syntheses of five macrocycles possessing two enediyne warheads, along with the structural and thermal analyses of these bis(enediyne) compounds. The solid-state packing of compound 6 suggests the possibility for the molecule to undergo a topochemical diacetylene polymerization.
Gold-Catalyzed Oxidative Cyclization of 4-Allenyl-1-ynes with 8-Methylquinoline Oxide
作者:Rahul Kisan Kawade、Rai-Shung Liu
DOI:10.1021/ol4020199
日期:2013.8.16
Gold-catalyzedoxidativecyclizations of 4-allenyl-1-ynes with 8-methylquinoline oxide are described; diverse products are produced depending on the allenyl substituents. This reaction comprises initial formation of α-oxo gold carbenes that are attacked by allene to form allyl cation intermediates.