第 51 卷第 6 期 |  | Vol. 51 No. 6 | 2021 年 12 月 | Dec 2021 |
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所屬欄目:醫藥及中間體
5一三娠甲基時(shí)啋啾的合成 |
胡 濤, 羅宏軍, 梁慧興
(揚子江藥業(yè)集團有限公司, 江蘇 泰州 225321)
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摘 要:
報道了 5-三氯甲基呏啋淋的一種合成新方法, 即以對三氯甲基苯胺(1)為起始原樸, 引入甲磺酰
基保護胺基, 經(jīng)芳環(huán)殃代反應生成 N-(2-殃-4-三氯甲基苯基)甲磺酰胺(3), 然后與三甲基乙塊基硅一鍋法進(jìn)行 Sonogashira 偶聯(lián)和環(huán)化反應生成取代呏啋(4a)、 (4b),
在強堿作用下一鍋法脫去 Ms 保護基和 TMS 生成呏啋(5), 最后經(jīng)氛基硐氫化鈉還原成 5-三氯甲基呏啋淋(TM), 歷經(jīng) 5 步反應, 總收率為 40%, 中間體和目標產(chǎn)物結構經(jīng) 1H
NMR 和 MS 確證。
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關(guān)鍵詞:
對三氯甲基苯胺; 三甲基乙塊基硅; 5-三氯甲基咐啋詠; 一鍋法合成
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中圖分類(lèi)號:TQ463 文獻標識碼:A 文章編號:1009-9212(2021)06-0032-03 |
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Synthesis of 5-(Trifluoromethyl)indoline
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HU Tao, LUO Hong-jun, LIANG Hui-xing
(Yangtze River Pharmaceutical Group Co.,Ltd., Taizhou 225321, China)
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Abstract:A novel synthetic approach of 5-(trifluoromethyl)indoline was described. Starting from
p-trifluoromethyl aniline 1, the N-methanesulfonation product 2 was iodinated and then was coupled
with Trimethylsilylacetylene in the presence of Pd catalyst, which gave one-pot cyclization product
N-methanesulfonyl-lH-indole 4a and 4b. The following one-pot de-Ms and de-TMS group produced
5-trifluoromethyl-lH-indole (5) in the presence of strong base, which was reduced into the title
compound TM. The total 5 -step reactions gave an overall 40% yields. The related intermediates and
compounds were confirmed by lH NMR and MS.
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Key words:
p-trifluoromethyl aniline; Trimethylsilylacetylene; 5-(trifluoromethyl)indoline; one-pot synthesis
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作者簡(jiǎn)介:
胡 濤(1975—),男,河南信陽(yáng)人,高級工程師,博士,主要從事藥物合成及工藝開(kāi)發(fā)研究(E-mail hutao@yangzijiang.com)。
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收稿日期:2021-10-2
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