Palladium-Catalyzed Synthesis of 9-Fluorenylidenes through Aryne Annulation
作者:Shilpa A. Worlikar、Richard C. Larock
DOI:10.1021/ol900554r
日期:2009.6.4
The palladium-catalyzedannulation of arynes by substituted o-halostyrenes produces substituted 9-fluorenylidenes in good yields. This methodology provides this important carbocyclic ring system in a single step, which involves the generation of two new carbon−carbon bonds, occurs under relatively mild reaction conditions, and tolerates a variety of functional groups, including cyano, ester, aldehyde
SYNTHESE DES N-METHYLOXYNAPHTINDOLCHINONS UND N-METHYLNAPHTHOISATINCHINONS
作者:Zenjiro Kitasato、Chuzaburo Sone
DOI:10.1246/bcsj.5.348
日期:1930.12
CN-assisted oxidative cyclization of cyano cinnamates and styrene derivatives: a facile entry to 3-substituted chiral phthalides
作者:R. Santhosh Reddy、I. N. Chaithanya Kiran、Arumugam Sudalai
DOI:10.1039/c2ob25409c
日期:——
of o-cyano cinnamates and styrene derivatives leads to efficient construction of chiralphthalide frameworks in high optical purities. This unique reaction is characterized by unusual synergism between CN and osmate groups resulting in rate enhancement of the AD process. The method is amply demonstrated by the synthesis and the structural/stereochemical assignment of the natural products.