作者:Benedikt Crone、Stefan F. Kirsch、Klaus-Daniel Umland
DOI:10.1002/anie.201001113
日期:2010.6.21
Valuable six‐membered carbocycles including highly substituted benzenes, 1,4‐cyclohexadienes, and 4‐fluorocyclohexenes can be prepared from simple 1,5‐enynes by iodonium‐induced cyclization. This cyclization strategy was applied to the total synthesis of cybrodol, a sesquiterpenoid with a pentasubstituted aromatic core (see scheme).
Cationic Au(I)-Catalyzed Cycloisomerization of Aromatic Enynes for the Synthesis of Substituted Naphthalenes
作者:Takanori Shibata、Yasunori Ueno、Kazumasa Kanda
DOI:10.1055/s-2006-926261
日期:——
A cationic Au(I) complex catalyzed the cycloisomerization of aromaticenynes that possess a substituent on their alkyne terminus. Cyclization of the 6-endo-dig type proceeded dominantly to give 1,3-di- and 1,2,3-trisubstituted naphthalenes.
Gold(I)-Catalyzed Cycloisomerizations and Alkoxycyclizations of<i>ortho</i>-(Alkynyl)styrenes
作者:Ana M. Sanjuán、Muhammad A. Rashid、Patricia García-García、Alberto Martínez-Cuezva、Manuel A. Fernández-Rodríguez、Félix Rodríguez、Roberto Sanz
DOI:10.1002/chem.201405789
日期:2015.2.9
Indenes and related polycyclic structures have been efficiently synthesized by gold(I)‐catalyzed cycloisomerizations of appropriate ortho‐(alkynyl)styrenes. Disubstitution at the terminal position of the olefin was demonstrated to be essential to obtain products originating from a formal 5‐endo‐dig cyclization. Interestingly, a complete switch in the selectivity of the cyclization of o‐(alkynyl)‐α‐methylstyrenes
Copper-catalyzed cascade cyclization of 1,5-enynes via consecutive trifluoromethylazidation/diazidation and click reaction: self-assembly of triazole fused isoindolines
作者:Liu-Zhu Yu、Yin Wei、Min Shi
DOI:10.1039/c6cc07394h
日期:——
Copper-catalyzedcascade cyclization of 1,5-enynes with two types of hypervalent reagents was developed via consecutive trifluoromethylazidation/diazidation and intramolecular click reaction (CUAAC), providing one-pot self-assembly of triazole fused isoindolines bearing a...
Palladium-Catalyzed Aerobic Oxidative Coupling of <i>ortho</i>-(Alkynyl)styrenes with Allylic Alcohols via 6-<i>endo-dig</i> Cyclization: Regioselective Construction of Polysubstituted Naphthalenes
作者:Perla Ramesh、Gedu Satyanarayana
DOI:10.1021/acs.joc.9b01240
日期:2019.10.18
An efficient protocol is described for the regioselective construction of polysubstituted functionalized naphthalenes from easily accessible ortho-(alkynyl)styrenes under mild reaction conditions. The reaction proceeds via cycloaromatization and intermolecular coupling of ortho-(alkynyl)styrenes with allylicalcohols catalyzed by PdCl2. Notably, the reaction is successful under open air as the green