Synthesis of 5-Pyridyl-2-furaldehydes via Palladium-Catalyzed Cross-Coupling with Triorganozincates
摘要:
[GRAPHICS]-Pyridyl- and 5-aryl-2-furaidehydes are prepared from furaldehyde diethyl acetal in a four-step, one-pot procedure: (1) deprotonation; (2) U to Zn transmetalation; (3) Pd-medlated cross-coupling; (4) aldehyde deprotection. Triorganozincate 7 was found to transfer all three groups in the Pd-catalyzed cross-coupling reaction with haloaromatics.
Thiosemicarbazones as anti-virals and immunopotentiators
申请人:Barsanti A. Paul
公开号:US20050069555A1
公开(公告)日:2005-03-31
The present invention is directed to novel immune potentiators, novel vaccine adjuvants, novel compounds and pharmaceutical compositions, novel methods for treating viral infections, including HCV, by administering the compounds, and novel methods for modulating an immune response by administering the compounds.
A convenient synthesis of 5-aryl- and 5-heteroaryl-2-furaldehydes by the cross-coupling reaction of organozincs
作者:Seung-Hoi Kim、Reuben D. Rieke
DOI:10.1016/j.tetlet.2010.03.035
日期:2010.5
An efficient synthetic route for the preparation of 5-heteroaryl- and 5-aryl-2-furaldehydes has been developed. It has been accomplished by the palladium(0)-catalyzed cross-coupling reaction of heteroarylzinc and arylzinc reagents with 5-bromo-2-furaldehyde under very mild conditions. (C) 2010 Elsevier Ltd. All rights reserved.
THIOSEMICARBAZONES AS ANTI-VIRALS AND IMMUNOPOTENTIATORS