CN112250557A - 一种高效合成1,6-二烯-3-酮衍生物的方法 - Google Patents
一种高效合成1,6-二烯-3-酮衍生物的方法 Download PDFInfo
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- C07D213/44—Radicals substituted by doubly-bound oxygen, sulfur, or nitrogen atoms, or by two such atoms singly-bound to the same carbon atom
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Abstract
本发明公开了一种高效合成1,6‑二烯‑3‑酮衍生物的方法,在有机溶剂体系中,以式2化合物为原料,在75~85℃条件下搅拌回流反应,TLC跟踪反应至完全,反应液后处理得到式1化合物。本发明通过串联反应首次设计合成了一系列底物联烯‑7‑炔‑4‑酮,该底物是一种反应位点多、官能团活性高的合成子,无需任何催化剂或氧化剂,仅在溶剂中便可顺利进行合成得到1,6‑二烯‑3‑酮衍生物,该反应具有操作简单、价格低廉、结构新颖等优点。
Description
技术领域
本发明属于有机合成技术领域,具体涉及一种高效合成1,6-二烯-3-酮衍生物的方法。
背景技术
1,6-二烯-3-酮是一种重要的有机合成中间体,由于产品骨架的特殊性,不仅在医药方面表现出丰富的药理活性,而且所合成出的新材料性能突出,可替代多种进口材料,如感光材料、电荷输送材料、半导体粘合。另外,在微电子、有机发光半导体、光学设备等方面具有广泛的应用前景。
目前已经有很多关于合成1,6-二烯-3-酮衍生物的文献报道,但现有合成方法都存在反应条件苛刻、操作复杂、污染环境等缺陷,要获得新的1,6-二烯-3-酮衍生物很困难。
发明内容
本发明的目的是提供一种高效合成1,6-二烯-3-酮衍生物的方法,操作简单,反应条件温和,原子利用率高。
为实现上述目的,本发明提供一种高效合成1,6-二烯-3-酮衍生物的方法,在有机溶剂体系中,以式2化合物为原料,在75~85℃条件下搅拌回流反应,TLC跟踪反应至完全,反应液后处理得到式1化合物;
优选的,所述的R1选自氢(H)、甲基(Me)、乙基(Et)、正丙基(n-Pr)、叔丁基(t-Bu)、甲氧基(OMe)、乙酯基(COOMe)、氟(F)、氯(Cl)、溴(Br)、噻吩基、吡啶基(Py)、三氟甲基(CF3)、三甲基硅基(Si(CH3)3)中的一种。
优选的,所述有机溶剂选自甲苯、苯、二甲苯、均三甲苯、氯苯、二苯醚、乙腈、乙酸乙酯、甲醇、二氯甲烷、二氯乙烷、吡啶、1,4-二氧六环、四氢呋喃、N,N-二甲基甲酰胺、二甲亚砜中的一种或几种。
进一步地,所述式2化合物通过以下步骤制备得到:
1)在惰性气氛中,式6化合物与4-戊炔醇在双(三苯基膦)二氯化钯和碘化亚酮催化下,三乙胺为溶剂,室温反应,TLC跟踪反应至完全,乙酸乙酯萃取,干燥,抽滤,浓缩,柱层析分离得到式5化合物;
2)将式5化合物溶于二氯甲烷溶剂中,0℃缓慢加入戴斯马丁氧化剂固体颗粒,将温度升至室温继续反应2小时,抽滤除去固体,滤液用饱和碳酸氢钠水溶液淬灭,二氯甲烷萃取,干燥,抽滤,浓缩,柱层析分离得到式4化合物;
3)将活化后的锌粉溶于四氢呋喃溶液中,搅拌状态下加入式4化合物,缓慢加入3-溴丙炔,55~60℃反应48~72小时,冷却至室温,加饱和氯化铵水溶液淬灭,乙酸乙酯萃取,干燥,抽滤,浓缩,柱层析分离得到式3化合物;
4)将式3化合物溶于二氯甲烷溶剂中,0℃缓慢加入戴斯马丁氧化剂固体颗粒,将温度升至室温继续反应2小时,抽滤除去固体,滤液用饱和碳酸氢钠水溶液淬灭,二氯甲烷萃取,干燥,抽滤,浓缩,柱层析分离得到式2化合物;
上述步骤1)至4)的反应路线及式2~式6化合物的结构式为:
式中R1选自氢、C1-C5烷基、C1-C5烷氧基、酯基、卤素、噻吩基、吡啶基、三氟甲基、三甲基硅基中的一种。
优选的,步骤1)中,所述式6化合物与4-戊炔醇的摩尔比为1.1:1。
优选的,步骤2)中,所述式5化合物与戴斯马丁氧化剂的摩尔比为1:1.1。
优选的,步骤3)中,所述式4化合物与3-溴丙炔的摩尔比为1:2。
优选的,步骤4)中,所述式3化合物与戴斯马丁氧化剂的摩尔比为1:1.1。
本发明通过串联反应首次设计合成了一系列底物联烯-7-炔-4-酮,该底物是一种反应位点多、官能团活性高的合成子,无需任何催化剂或氧化剂,仅在溶剂中便可顺利进行合成得到1,6-二烯-3-酮衍生物,该反应具有操作简单、反应条件温和、产物收率高、结构新颖等优点。
具体实施方式
下面结合具体实施例对本发明作进一步详细说明。
下述实施例中,除非另有说明,所述的实验方法通常按照常规条件或制造厂商建议的条件实施;所述的原料、试剂均可通过市售购买的方式获得。
实施例1:制备化合物1a
双(三苯基膦)二氯化钯(0.35g,0.5mmol)和碘化亚酮(0.19g,1mmol)加入到500mL规格的史莱克瓶中,氩气氛围下依次加入溶剂三乙胺(200mL)、碘苯(11.22g,55mmol)和4-戊炔醇(4.2g,50mmol),室温反应12小时。乙酸乙酯萃取,无水硫酸镁干燥,抽滤,真空减压浓缩,洗脱剂为乙酸乙酯:石油醚=1:3,柱层析分离得到4-戊炔-1-醇(7.6g,95%)。
4-戊炔-1-醇(7.6g,47.5mmol)溶于二氯甲烷(50mL)溶剂中,0℃缓慢加入戴斯马丁(22.2g,52.3mmol)氧化剂固体颗粒,将温度升至室温继续反应2小时。抽滤除去固体,滤液用饱和碳酸氢钠水溶液淬灭,二氯甲烷萃取,无水硫酸镁干燥,抽滤,真空减压浓缩,通过硅胶柱层析法,洗脱剂为乙酸乙酯:石油醚=1:30,得到苯基戊炔醛(7.1g,95%)。
首先将活化后的锌粉(8.8g,134.7mmol)溶于四氢呋喃(150mL)溶液中,搅拌状态下加入苯基戊炔醛(7.1g,44.9mmol),缓慢加入3-溴丙炔(10.6g,89.8mmol),55~60℃反应48~72小时。冷却至室温,加饱和氯化铵水溶液淬灭,乙酸乙酯萃取,无水硫酸镁干燥,抽滤,真空减压浓缩,通过硅胶柱层析法,洗脱剂乙酸乙酯/石油醚先用1:30,后提高至1:10,得到1,7-二炔-4-醇(8.0g,90%)。
将1,7-二炔-4-醇(8.0g,40.4mmol)溶于二氯甲烷(40mL)溶剂中,0℃缓慢加入戴斯马丁(18.8g,44.4mmol)氧化剂固体颗粒,将温度升至室温继续反应2小时。抽滤除去固体,滤液用饱和碳酸氢钠水溶液淬灭,二氯甲烷萃取,无水硫酸镁干燥,抽滤,真空减压浓缩,通过硅胶柱层析法,洗脱剂为乙酸乙酯:石油醚=1:30,得到联烯-7-炔-4-酮2a(6.8g,86%)。
联烯-7-炔-4-酮2a(6.8g,34.7mmol)溶于甲苯(70mL)溶剂中,升温至80℃,反应48小时左右。真空减压浓缩,硅胶柱层析分离,洗脱剂为乙酸乙酯:石油醚=1:5,得到1,6-二烯-3-酮化合物1a(5.1g,75%)。
本实施例中底物2a的结构表征数据如下:1H NMR(400MHz,CDCl3;δ,ppm):7.40-7.36(m,2H),7.28(s,3H),5.86-5.81(m,1H),5.29(d,J=7.2Hz,2H),2.97-2.92(m,2H),2.73-2.67(m,2H).13C NMR(100MHz,CDCl3;δ,ppm):216.9,198.4,131.6,128.2,127.8,123.7,96.6,88.6,81.0,79.9,38.2,14.4.
产物1a的结构表征数据如下:1H NMR(400MHz,DMSO;δ,ppm):7.51-7.46(m,4H),7.44-7.40(m,1H),5.70(s,1H),3.47-3.44(m,2H),3.01-2.96(m,2H),2.51(d,J=2.8Hz,2H).13C NMR(100MHz,DMSO;δ,ppm):197.4,160.8,144.3,139.5,133.7,129.8,129.4,127.6,113.4,36.4,35.6,21.9.
实施例1-14的反应合成路线如下所示:
反应原料、反应条件及产率如表1所示:
表1 1,6-二烯-3-酮类化合物的收率
*各步骤反应条件(包括投料比、催化剂、氧化剂、溶剂、温度和时间)不变,仅改变R1取代基。
产物1b的结构表征数据如下:1H NMR(400MHz,DMSO;δ,ppm):7.38(d,J=8.0Hz,2H),7.29(d,J=8.0Hz,2H),5.66(s,1H),3.42-3.39(m,2H),2.96-2.91(m,2H),2.51(d,J=7.2Hz,2H),2.35(s,3H).13C NMR(100MHz,DMSO;δ,ppm):197.3,161.0,144.4,139.8,138.4,131.0,130.0,127.6,112.9,36.4,35.5,21.8,21.6.
产物1f的结构表征数据如下:1H NMR(400MHz,DMSO;δ,ppm):7.44(d,J=8.8Hz,2H),7.04(d,J=8.8Hz,2H),5.62(s,1H),3.82(s,3H),3.40(d,J=2.0Hz,2H),2.92(s,2H),2.50(d,J=7.2Hz,2H).13C NMR(100MHz,DMSO;δ,ppm):197.2,161.2,160.7,144.4,136.8,129.4,126.5,115.0,112.1,55.8,36.4,35.6,21.7.
产物1i的结构表征数据如下:1H NMR(400MHz,DMSO;δ,ppm):7.56-7.47(m,4H),5.71(s,1H),3.45(s,2H),3.00-2.93(m,2H),2.54(d,J=7.2Hz,2H).13C NMR(100MHz,DMSO;δ,ppm):197.3,160.4,142.9,140.2,134.2,132.5,129.5,129.2,113.8,36.3,35.6,21.9.
产物1j的结构表征数据如下:1H NMR(400MHz,DMSO;δ,ppm):7.67(d,J=8.4Hz,2H),7.43(d,J=8.0Hz,2H),5.72(s,1H),3.46-3.43(m,2H),2.99-2.93(m,2H),2.53(d,J=7.6Hz,2H).13C NMR(100MHz,DMSO;δ,ppm):197.3,160.4,143.0,140.4,132.8,132.4,129.4,123.0,113.8,36.3,35.6,21.9.
本发明提供的产物结构中六元并四元环骨架可以开环,产物结构进一步衍生化,进而发挥药理活性,丰富药物分子库。
Claims (8)
2.根据权利要求1所述的一种高效合成1,6-二烯-3-酮衍生物的方法,其特征在于,所述的R1选自氢、甲基、乙基、正丙基、叔丁基、甲氧基、乙酯基、氟、氯、溴、噻吩基、吡啶基、三氟甲基、三甲基硅基中的一种。
3.根据权利要求1或2所述的一种高效合成1,6-二烯-3-酮衍生物的方法,其特征在于,所述有机溶剂选自甲苯、苯、二甲苯、均三甲苯、氯苯、二苯醚、乙腈、乙酸乙酯、甲醇、二氯甲烷、二氯乙烷、吡啶、1,4-二氧六环、四氢呋喃、N,N-二甲基甲酰胺、二甲亚砜中的一种或几种。
4.根据权利要求1或2所述的一种高效合成1,6-二烯-3-酮衍生物的方法,其特征在于,所述式2化合物通过以下步骤制备得到:
1)在惰性气氛中,式6化合物与4-戊炔醇在双(三苯基膦)二氯化钯和碘化亚酮催化下,三乙胺为溶剂,室温反应,TLC跟踪反应至完全,乙酸乙酯萃取,干燥,抽滤,浓缩,柱层析分离得到式5化合物;
2)将式5化合物溶于二氯甲烷溶剂中,0℃缓慢加入戴斯马丁氧化剂固体颗粒,将温度升至室温继续反应2小时,抽滤除去固体,滤液用饱和碳酸氢钠水溶液淬灭,二氯甲烷萃取,干燥,抽滤,浓缩,柱层析分离得到式4化合物;
3)将活化后的锌粉溶于四氢呋喃溶液中,搅拌状态下加入式4化合物,缓慢加入3-溴丙炔,55~60℃反应48~72小时,冷却至室温,加饱和氯化铵水溶液淬灭,乙酸乙酯萃取,干燥,抽滤,浓缩,柱层析分离得到式3化合物;
4)将式3化合物溶于二氯甲烷溶剂中,0℃缓慢加入戴斯马丁氧化剂固体颗粒,将温度升至室温继续反应2小时,抽滤除去固体,滤液用饱和碳酸氢钠水溶液淬灭,二氯甲烷萃取,干燥,抽滤,浓缩,柱层析分离得到式2化合物;
上述步骤1)至4)的反应路线及式2~式6化合物的结构式为:
式中R1选自氢、C1-C5烷基、C1-C5烷氧基、酯基、卤素、噻吩基、吡啶基、三氟甲基、三甲基硅基中的一种。
5.根据权利要求4所述的一种高效合成1,6-二烯-3-酮衍生物的方法,其特征在于,步骤1)中,所述式6化合物与4-戊炔醇的摩尔比为1.1:1。
6.根据权利要求4所述的一种高效合成1,6-二烯-3-酮衍生物的方法,其特征在于,步骤2)中,所述式5化合物与戴斯马丁氧化剂的摩尔比为1:1.1。
7.根据权利要求4所述的一种高效合成1,6-二烯-3-酮衍生物的方法,其特征在于,步骤3)中,所述式4化合物与3-溴丙炔的摩尔比为1:2。
8.根据权利要求4所述的一种高效合成1,6-二烯-3-酮衍生物的方法,其特征在于,步骤4)中,所述式3化合物与戴斯马丁氧化剂的摩尔比为1:1.1。
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