作者:Jonas J. Koenig、Thiemo Arndt、Nora Gildemeister、Jörg-M. Neudörfl、Martin Breugst
DOI:10.1021/acs.joc.9b01083
日期:2019.6.21
very mild, metal-free reaction conditions using molecular iodine as the catalyst. A variety of different divinyl ketones including aromatic systems undergo the iodine-catalyzed reaction with moderate to very good yields in both polar and apolar solvents. Our mechanistic studies indicate that the Nazarov system is activated through a halogen bond between the carbonyl group and the catalyst, and other
Efficient Nazarov Cyclizations of 2-Alkoxy-1,4-pentadien-3-ones
作者:Guangxin Liang、Stefan N. Gradl、Dirk Trauner
DOI:10.1021/ol036019z
日期:2003.12.1
[GRAPHICS]Expeditious and high-yielding Nazarov cyclizations of 2-alkoxy-1,4-pentadien-3-ones are described. An example of a catalytic asymmetric Nazarov cyclization is presented.
Nazarov-type Reactions in Water
作者:Masaya Kokubo、Shū Kobayashi
DOI:10.1002/asia.200800461
日期:2009.4.6
AbstractDifferent in water! We have developed Nazarov‐type reactions in water. Different reaction courses compared with those in organic solvents are observed in water. In the presence of a scandium based, surfactant‐type catalyst, water‐trapping products are obtained exclusively. The results presented are unprecedented and provide a valuable extension to information available regarding organic reactions in water.magnified image