期刊
SYNTHESIS-STUTTGART
卷 49, 期 23, 页码 5217-5223出版社
GEORG THIEME VERLAG KG
DOI: 10.1055/s-0036-1589095
关键词
Heck reaction; PEG-400; Wittig reaction; styrenes; naphthoquinones; stilbenes; 3-iodolawsone
资金
- CNPq [442337/2014-0]
- FAPERJ [E-26/111.358/2014]
- UFRJ
Styrenes were coupled with 3-iodolawsone in PEG-400 at 90 degrees C, leading stereoselectively to (E)-stilbene-quinone hybrids through Heck reactions. The best reaction conditions were found to be the use of NaOH (3 equiv) and 10 mol% of palladium acetate at 90 degrees C for 15 minutes. The chemical yields of the Heck reactions using styrenes with electron-withdrawing groups (65-98%) were greater than styrenes bearing electron-donating groups (7-32%) on the aromatic ring. In particular, the chemical yields of Heck reactions involving nitrostyrenes were the best ones observed.
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