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46 4 Vol. 46 No. 4
2016 8 Aug 2016

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5--2-߻૵ĺϳо
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ժҪ5-ˮȩʼԭ(jng)Horner-Wittigˮõ5--2-uԓgwքecͬԻFȡıcCuOAc2AgOAcpwϵ(jng)“(lin)ʽõ2(g)5--2-߻ૻY(jng)1H NMR13C NMR_C
P(gun)I~5--2-uc5--2-߻
ЈD(li)̖TQ251.1īIRaA¾̖1009-9212201604-0032-04
Synthesis of 5-Nitro-2-sulfonylbenzo[b]furan
WU Xia-ming1, SUN Hao-hao2, ZHANG Rui-ze2, GUO Shuang2, LI Hong-shuang2* (1. Affiliated Hospital of Taishan Medical University, Taian 271000, China; 2. School of Pharmaceutical Science, Taishan Medical University, Taian 271016, China)
Abstract5-Nitro-2-hydroxycinnamic acid was prepared by Horner-Wittig reaction followed by hydrolysis using 5-nitrosalicylaldehyde as the starting material. Subsequently, the cascade reactions between this intermediate and benzenesulfinic acid sodium salts with different electron substitution patterns using Cu(OAc)2/AgOAc bimetallic catalytic system gave two 5-nitro-2-sulfonylbenzo[b]furans. The structures of benzo[b] furans were confirmed by 1H NMR and 13C NMR.
Key words5-nitro-2-hydroxycinnamic acid; benzenesulfinic acid sodium salt; 5-nitro-2-sulfonylbenzo[b]furan
Ŀ ҼW(xu)(chung )„(chung )I(y)ӖӋ201510439079Yɽ|ʡȻƌW(xu)ZR2015BL006̩пƼl(f)չӋ2015GX2049
ߺ(jin)飺1965-ɽ|ʳˎTʿоtԺˎW(xu)E-mailwuxiaming65@163.com
“(lin) ϵ ˣˬvоЙCϳɷW(xu)ˎOӋE-maillihongshuang8625@163.com
ոڣ 2016-06-0
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