Novel Synthesis of Bridged Phenylthienylethenes and Dithienylethenes via Pd-Catalyzed Double-Cyclization Reactions of Diarylhexadienynes
摘要:
[reaction: see text] Bridged phenylthienylethenes and dithienylethenes were synthesized via Pd-catalyzed double-cyclization reactions of (Z,Z)-1,6-diaryl-1,5-hexadien-3-ynes. Pd-catalyzed as well as photoinduced Z/E isomerization of the products were also investigated.
Novel Synthesis of Bridged Phenylthienylethenes and Dithienylethenes via Pd-Catalyzed Double-Cyclization Reactions of Diarylhexadienynes
摘要:
[reaction: see text] Bridged phenylthienylethenes and dithienylethenes were synthesized via Pd-catalyzed double-cyclization reactions of (Z,Z)-1,6-diaryl-1,5-hexadien-3-ynes. Pd-catalyzed as well as photoinduced Z/E isomerization of the products were also investigated.
Copper-Catalyzed Tandem CN Bond Formation: An Efficient Annulative Synthesis of Functionalized Cinnolines
作者:Catherine J. Ball、Jeremy Gilmore、Michael C. Willis
DOI:10.1002/anie.201201529
日期:2012.6.4
Cinn‐tillating synthesis: The combination of a readily available copper catalyst, a simple hydrazide nucleophile, and established difunctionalized building blocks provides a new, flexible route to an under‐developed class of aromatic heterocycles, cinnolines (see scheme).