Synthesis of Substituted Naphthalenes and Carbazoles by the Palladium-Catalyzed Annulation of Internal Alkynes
作者:Qinhua Huang、Richard C. Larock
DOI:10.1021/jo034449x
日期:2003.9.1
An efficient synthesis of highly substituted naphthalenes has been developed by the palladium-catalyzed annulation of a variety of internal alkynes, in which two new carbon-carbon bonds are formed in a single step under relatively mild reaction conditions. This method has also been used to synthesize carbazoles, although a higher reaction temperature is necessary. The process involves arylpalladation
通过钯催化的各种内部炔烃的环化反应,已开发出高效取代的萘的有效合成方法,其中,在相对温和的反应条件下,一个步骤即可形成两个新的碳-碳键。尽管需要更高的反应温度,但是该方法也已经用于合成咔唑。该方法涉及炔烃的芳基palladation,随后是分子内的Heck烯烃化和双键异构化。该方法可容纳各种官能团,并以良好或优异的收率提供预期的高度取代的萘和咔唑。