第 37 卷第 3 期 |  | Vol. 37 No. 3 | 2007 年 6 月 | Jun 2007 |
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所屬欄目:醫藥及中間體
5,6-二氫-4H-6-甲基噻嗯并[2,3-b]噻喃-4-酮-2-磺酰胺的合成 |
吳春姍,張 珩,楊藝虹,楊建設,汪 淼
(武漢工程大學(xué) 湖北省新型反應器與綠色化學(xué)工藝重點(diǎn)實(shí)驗室,湖北 武漢 430073) |
摘 要:以丁烯酸和2-巰基噻吩為原料,經(jīng)加成縮合制得3-(2-噻吩硫基)丁酸(2);以氯化亞砜氯化,三氯化鋁催化環(huán)合得5,6-二氫-4H-6-甲基噻嗯并[2,3-b]噻喃-4-酮(3);再經(jīng)磺化、氯化、氨解反應合成得5,6-二氫-4H-6-甲基噻嗯并[2,3-b]噻喃-4-酮-2-磺酰胺(1)。其中經(jīng)均勻設計優(yōu)化了環(huán)合反應條件為:n(2) ∶ n(氯化亞礬) ∶ n(三氯化鋁)=1 ∶ 3 ∶ 1.5,于20℃反應2 h。以2-巰基噻吩計,1 合成總收率為30.49%,結構經(jīng)IR、MS、1H NMR確證。 |
關(guān)鍵詞:噻嗯并呋喃酮;鹽酸杜噻酰胺;環(huán)合 |
中圖分類(lèi)號:0626.414 文獻標識碼:A 文章編號:1009-9212(2007)03- 0038 -03 |
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Synthesis of 5,6-Dihydro-6- methyl-4H- thieno [2,3-b] thiopyrane-4-one-2-sulfonamide |
WU Chun-shan,ZHANG Heng,YANG Yi-hong,YANG Jian-she,WANG Miao
(Hubei Key Laboratory of Novel Chemical Reactor &Green Chemical Technology ,Wuhan Institute of Technology ,Wuhan 430073,China) |
Abstract:3-(2-Mercaptothiophene)butanoic acid (2) was produced from crotonic acid and 2-mercaptothiophene,through condensation. 5,6-dihydro-6- methyl-4H- thieno[2,3-b] thiopyrane-4-one(3)was produced through chlorination by thionyl chloride and cyclization by anhydrous of aluminium chloride,and then 5,6-dihydro-6- methyl-4H- thieno[2,3-b]thiopyrane-4-one-2-sulfonamide(1)was produced through sulfonatio,chlorination and ammonolysis. The optimum technological condition gained through homogeneous design were as follow:n(2) ∶ n(SOCl2) ∶ n(AlCl3)=1 ∶ 3 ∶ 1.5,and reaction temperature was 20℃ for 2 hours. The total yield was 30.49% based on 2-mercaptothiophene. The products were characterized by IR ,MS and 1H NMR. |
Key words:thienothiopyrane;dorzolamide hydrochloride;cyclization |
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作者簡(jiǎn)介:吳春姍(1983-),女,湖北武漢人,武漢工程大學(xué)化工與制藥學(xué)院碩士研究生,主要從事藥物合成研究。(E-mail:wuchunshan.163@163.com)
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聯(lián) 系 人:張 珩(1956-),男,教授,碩士生導師,主要從事制藥工程方面的教學(xué)及研究工作。
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收稿日期:2007-01-26
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