第 35 卷第 4 期 |  | Vol. 35 No. 4 | 2005 年 8 月 | Aug 2005 |
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所屬欄目:醫藥及中間體
2-苯基-1,2-苯并異硒唑-3-(2H)-酮的合成研究 |
顏雪明; 盧志強; 陽(yáng)鵬飛(南華大學(xué)化工學(xué)院; 洛陽(yáng)師范學(xué)院化學(xué)系; 湖南衡陽(yáng); 河南洛陽(yáng)) |
摘 要:在N2保護下,采用水合肼的堿性水溶液還原硒粉制備了K2Se2,不經(jīng)分離直接與鄰氨基苯甲酸的重氮鹽反應得到了中間體2,2'-二硒化苯甲酸;在環(huán)合反應合成2-苯基-1,2-苯并異硒唑-3-(2H)-酮(Ebselen)時(shí)改用了乙醚-水為反應體系,K2CO3水溶液作為副產(chǎn)物HCl的吸收劑,促使胺解關(guān)環(huán)反應順利進(jìn)行,產(chǎn)物易分離、純化得2-苯基-1,2-苯并異硒唑-3-(2H)-酮。 |
關(guān)鍵詞:硒; 鄰氨基苯甲酸; 2; 2'-二硒化苯甲酸; 2-苯基-1; 2-苯并異硒唑-3-(2H)-酮; 合成 |
中圖分類(lèi)號:TQ252 文獻標識碼:A 文章編號:1009-9212(2005)04-0022-02 |
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Synthesis of 2-Phenyl-1, 2-Benzisoselenazol-3- (2H)-one |
YAN Xue-ming1; LU Zhi-qiang2; Yang Peng-fei1 (1.Department of Chemistry; Nanhua University; Hengyang; 421001; China; 2.Department of Chemistry; Luoyang Normal College; Luoyang; 471600; China) |
Abstract:The basic solution of Na2Se2 was obtained from reaction of selenium and hydrazine hydrate in the basic solution under the protection of nitrogen, and then reacted directly with salt solution of diazotization of o-aminobenzoic acid to give the intermediate 2,2′-bisselanyldibenzoic acid in a good yield. The cyclization of 2,2′-bisselanyldibenzoic acid with aniline in the ether-water system gave the product 2-phenyl-1, 2-benzisoselenazol-3 (2H)-one using potassium carbonate as the absorbent of hydrochloric aci... |
Key words:selenium; o-aminobenzoic acid; 2; 2′-bisselanyldibenzoic acid; 2-phenyl-1; 2-benzisoselenazol-3 (2H)-one; Synthesis |
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收稿日期:2005-04-23
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