CN111333526B - 一种n-芳基甘氨酸酯类衍生物的制备方法 - Google Patents

一种n-芳基甘氨酸酯类衍生物的制备方法 Download PDF

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CN111333526B
CN111333526B CN202010239460.5A CN202010239460A CN111333526B CN 111333526 B CN111333526 B CN 111333526B CN 202010239460 A CN202010239460 A CN 202010239460A CN 111333526 B CN111333526 B CN 111333526B
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杨超
刘淘陶
刘帆
李冰
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Shenzhen Graduate School Harbin Institute of Technology
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Abstract

一种N‑芳基甘氨酸酯类衍生物的制备方法,本发明涉及一种N‑芳基甘氨酸酯类衍生物的制备方法。本发明的目的是为了解决现有方法合成N‑芳基甘氨酸酯类衍生物步骤繁琐且污染环境的问题,本发明在室温下,将芳基一级胺类化合物、重氮乙酸乙酯、反应助剂和光催化剂溶解在有机溶剂中,混合均匀,再置于蓝色LEDs灯下进行反应,然后减压蒸馏除去溶剂,再分离纯化,即完成;本发明解决了现有N‑芳基甘氨酸酯类衍生物合成需要高温、生物催化剂或金属有机框架等导致的耗能高、成本高且污染环境的问题,寻求到了一条绿色高效、条件温和、方法简单、操作方便且产率高的合成N‑芳基甘氨酸酯类衍生物的路线,本发明应用于有机合成领域。

Description

一种N-芳基甘氨酸酯类衍生物的制备方法
技术领域
本发明涉及一种N-芳基甘氨酸酯类衍生物的制备方法。
背景技术
氨基酸酯类化合物的合成与应用是近年来研究的热门课题之一,由于氨基酸酯特殊的理化性质,因此其在医药、化工、农药、食品、化妆品等领域都有很广泛的应用。在众多的氨基酸酯类化合物中,N-芳基甘氨酸酯类衍生物是一类很有代表性的化合物,其作为有机合成中的原料或重要中间体,用途十分广泛。在医药方面,广泛用于合成各种具有抗菌、抗艾滋病毒、抗癌等多种生物活性和药用活性的大分子物质,如下,化合物1具有抗菌和抗真菌的活性,化合物2是HIV抑制剂,化合物3是一种分子靶向抗肿瘤新药;在农药方面,化合物4是一种用于白粉病防治的有效杀菌剂;在生命科学方面,化合物5 是一种很有前途的生物相容性荧光标记。因此,N-芳基甘氨酸酯类衍生物的合成具有着重要的意义。
Figure BDA0002432073960000011
目前,合成N-芳基甘氨酸酯类衍生物的报道并不多,而且传统合成方法主要是热化学反应,需要高温等条件,这会消耗较多的能量;同时会用到卤代乙酸乙酯,其生成物对环境的污染会比较大;并且复杂的分子往往含有多个活性基团,热化学反应要使其中某一个基团发生反应,需要先将其他基团保护起来,增加了反应步骤,这在一定程度上不符合绿色化学及原子经济的相关要求。有些合成方法中利用特殊的生物催化剂或金属有机框架等催化重氮醋酸乙酯与芳胺类化合物生成N-芳基甘氨酸酯,缺点是成本较高,催化剂较难制备,不适合大规模生产。因此,寻求一种绿色高效、条件温和、方法简单且操作方便的方法是合成N-芳基甘氨酸酯类衍生物亟待解决的关键问题。
发明内容
本发明的目的是为了解决现有方法合成N-芳基甘氨酸酯类衍生物步骤繁琐且污染环境的问题,提供一种N-芳基甘氨酸酯类衍生物的制备方法。
本发明一种N-芳基甘氨酸酯类衍生物的制备方法,包括如下步骤:
室温下,将芳基一级胺类化合物、重氮乙酸乙酯、反应助剂和光催化剂溶解在有机溶剂中,混合均匀,密封后,在氮气保护下进行冷冻除氧,再置于蓝色LEDs灯下进行反应,待反应完全后,减压蒸馏除去溶剂,再经薄层层析硅胶板分离纯化,即可得到N-芳基甘氨酸酯类衍生物;其中芳基一级胺类化合物、重氮乙酸乙酯、反应助剂和光催化剂的投料摩尔比为1:2:0.2:0.05;
其中芳基一级胺类化合物的化学结构式为:
Figure BDA0002432073960000021
其中芳香环Ar为萘、吡啶、苯并噻唑、喹啉、异喹啉、嘧啶或是带有取代基的苯环,其中带有取代基的苯环中取代基为酯基、卤素、烷氧基、羟基、烷基或苯基。
本发明提供了一种简洁的一步法合成N-芳基甘氨酸酯类衍生物的方法,本发明利用可见光诱导进行反应,避免了高温高压等强烈条件,既不需要加热,在室温下进行反应,减少了能耗;且具有良好的反应活性与选择性,减少了有害副产物的产生,更绿色环保。该方法解决了现有N-芳基甘氨酸酯类衍生物合成需要高温、生物催化剂或金属有机框架等导致的耗能高、成本高且污染环境的问题,寻求到了一条绿色高效、条件温和、方法简单、操作方便且产率高的合成N-芳基甘氨酸酯类衍生物的路线,也为现代工业化的发展奠定了一定的基础。
附图说明
图1为实施例1所得N-芳基甘氨酸酯类衍生物的1HNMR谱图;
图2为实施例1所得N-芳基甘氨酸酯类衍生物的13CNMR谱图。
具体实施方式
具体实施方式一:本实施方式一种N-芳基甘氨酸酯类衍生物的制备方法,包括如下步骤:
室温下,将芳基一级胺类化合物、重氮乙酸乙酯、反应助剂和光催化剂溶解在有机溶剂中,混合均匀,密封后,在氮气保护下进行冷冻除氧,再置于蓝色LEDs灯下进行反应,待反应完全后,减压蒸馏除去溶剂,再经薄层层析硅胶板分离纯化,即可得到N-芳基甘氨酸酯类衍生物;其中芳基一级胺类化合物、重氮乙酸乙酯、反应助剂和光催化剂的投料摩尔比为1:2:0.2:0.05;
其中芳基一级胺类化合物的化学结构式为:
Figure BDA0002432073960000031
其中芳香环(Ar)为萘、吡啶、苯并噻唑、喹啉、异喹啉、嘧啶或者是带有取代基的苯环,其中带有取代基的苯环中取代基为酯基、卤素、烷氧基、羟基、烷基或苯基。
本实施方式制得的衍生物的结构式如下:
Figure BDA0002432073960000032
其中,芳香环(Ar)是萘、吡啶、苯并噻唑、喹啉、异喹啉、嘧啶或者是带有取代基的苯环,其中取代基是酯基、卤素、烷氧基、羟基、烷基或苯基。
其反应路线为:
Figure BDA0002432073960000033
本实施方式提供了一种简洁的一步法合成N-芳基甘氨酸酯类衍生物的方法,本实施方式利用可见光诱导进行反应,避免了高温高压等强烈条件,既不需要加热,在室温下进行反应,减少了能耗;且具有良好的反应活性与选择性,减少了有害副产物的产生,更绿色环保。该方法解决了现有N-芳基甘氨酸酯类衍生物合成需要高温、生物催化剂或金属有机框架等导致的耗能高、成本高且污染环境的问题,寻求到了一条绿色高效、条件温和、方法简单、操作方便且产率高的合成N-芳基甘氨酸酯类衍生物的路线,也为现代工业化的发展奠定了一定的基础。
具体实施方式二:本实施方式与具体实施方式一不同的是:反应助剂为三氟甲磺酸亚铁。其他与具体实施方式一相同。
具体实施方式三:本实施方式与具体实施方式一或二不同的是:光催化剂为 [Ir(ppy)2(MeCN)2]PF6。其他与具体实施方式一或二相同。
具体实施方式四:本实施方式与具体实施方式一至三之一不同的是:有机溶剂为无水乙腈、无水甲醇或无水四氢呋喃,优选无水甲醇。其他与具体实施方式一至三之一相同。
具体实施方式五:本实施方式与具体实施方式一至四之一不同的是:芳基一级胺类化合物和有机溶剂的摩尔体积比为1mmol:10mL。其他与具体实施方式一至四之一相同。
具体实施方式六:本实施方式与具体实施方式一至五之一不同的是:置于蓝色LEDs 灯下反应的时间为12-40h,反应过程中不断搅拌。其他与具体实施方式一至五之一相同。
具体实施方式七:本实施方式与具体实施方式一至六之一不同的是:薄层层析硅胶板分离纯化所用溶剂为石油醚与乙酸乙酯的混合溶剂。其他与具体实施方式一至六之一相同。
具体实施方式八:本实施方式与具体实施方式一至七之一不同的是:石油醚与乙酸乙酯的体积比为(3-20):1。其他与具体实施方式一至七之一相同。
为验证本发明的有益效果进行了以下实验:
实施例1
室温下,向10mL圆底烧瓶中,加入9.3mg(0.1mmol)苯胺,22.8mg(0.2mmol)重氮乙酸乙酯,7.1mg(0.02mmol)三氟甲磺酸亚铁,3.7mg(5.0mol%)[Ir(ppy)2(MeCN)2]PF6和1mL无水甲醇,用胶塞和封口膜密封后,在氮气保护下进行冷冻除氧,置于30W蓝色LEDs灯下,光照24小时并不断搅拌。用TLC监测反应进度。
后处理:反应结束后,反应溶剂经旋转蒸发仪浓缩旋干后,再以体积比为20:1的石油醚:乙酸乙酯的混合溶液作为展开剂,进行薄层层析硅胶板纯化分离,得到相应的N- 芳基甘氨酸酯类衍生物,其反应式为:
Figure BDA0002432073960000041
产物纯度为99%,产率为66%:其1HNMR谱图见图1,13CNMR谱图见图2,核磁数据分析为:核磁数据分析为:1HNMR(600MHz,CDCl3)δH7.11(t,J=7.8Hz,2H), 6.67(t,J=7.3Hz,1H),6.52(d,J=7.9Hz,2H),4.16(q,J=7.1Hz,2H),3.80(s,2H),1.21(t, J=7.2Hz,3H).
13CNMR(151MHz,CDCl3)δC171.07,146.95,129.22,118.07,112.90,61.22,45.74,14.11.
实施例2
室温下,向10mL圆底烧瓶中,加入15.1mg(0.1mmol)4-氨基苯甲酸甲酯,22.8mg(0.2mmol)重氮乙酸乙酯,7.1mg(0.02mmol)三氟甲磺酸亚铁,3.7mg(5.0mol%) [Ir(ppy)2(MeCN)2]PF6和1mL无水甲醇,用胶塞和封口膜密封后,在氮气保护下进行冷冻除氧,置于30W蓝色LEDs灯下,光照30小时并不断搅拌。用TLC监测反应进度。
后处理:反应结束后,反应溶剂经旋转蒸发仪浓缩旋干后,再以体积比为5:1的石油醚:乙酸乙酯的混合溶液作为展开剂,进行薄层层析硅胶板纯化分离,得到相应的N-芳基甘氨酸酯类衍生物,其反应式为:
Figure BDA0002432073960000051
产物纯度为99%,产率为25%。核磁数据分析为:1HNMR(600MHz,CDCl3)δH 7.81(t,J=10.1Hz,2H),6.50(d,J=8.7Hz,2H),4.20(q,J=7.1Hz,2H),3.89(d,J=16.7Hz,2H),3.78(s,3H),1.24(t,J=7.1Hz,3H).
13CNMR(151MHz,CDCl3)δC170.36,167.18,150.58,131.55,119.29,111.74,61.63, 51.60,45.06,14.16.
实施例3
室温下,向10mL圆底烧瓶中,加入11.1mg(0.1mmol)3-氟苯胺,22.8mg(0.2mmol)重氮乙酸乙酯,7.1mg(0.02mmol)三氟甲磺酸亚铁,3.7mg(5.0mol%) [Ir(ppy)2(MeCN)2]PF6和1mL无水甲醇,用胶塞和封口膜密封后,在氮气保护下进行冷冻除氧,置于30W蓝色LEDs灯下,光照24小时并不断搅拌。用TLC监测反应进度。
后处理:反应结束后,反应溶剂经旋转蒸发仪浓缩旋干后,再以体积比为20:1的石油醚:乙酸乙酯的混合溶液作为展开剂,进行薄层层析硅胶板纯化分离,得到相应的N- 芳基甘氨酸酯类衍生物,其反应式为:
Figure BDA0002432073960000052
产物纯度为99%,产率为40%。核磁数据分析为:1HNMR(600MHz,CDCl3)δH 7.11–6.95(m,1H),6.36(t,J=8.4Hz,1H),6.28(t,J=21.5Hz,1H),6.20(t,J=17.7Hz, 1H),4.46–4.27(m,1H),4.26–4.12(m,2H),3.80(s,2H),1.23(t,J=7.1Hz,3H).
13CNMR(151MHz,CDCl3)δC170.70,164.80(d,J=243.2Hz),148.71(d,J=10.7Hz),130.38(d,J=10.2Hz),108.75(d,J=2.3Hz),104.61,104.47,99.78,99.61,61.46,45.58, 14.14.
实施例4
室温下,向10mL圆底烧瓶中,加入17.2mg(0.1mmol)4-溴苯胺,22.8mg(0.2mmol)重氮乙酸乙酯,7.1mg(0.02mmol)三氟甲磺酸亚铁,3.7mg(5.0mol%) [Ir(ppy)2(MeCN)2]PF6和1mL无水甲醇,用胶塞和封口膜密封后,在氮气保护下进行冷冻除氧,置于30W蓝色LEDs灯下,光照24小时并不断搅拌。用TLC监测反应进度。
后处理:反应结束后,反应溶剂经旋转蒸发仪浓缩旋干后,再以体积比为20:1的石油醚:乙酸乙酯的混合溶液作为展开剂,进行薄层层析硅胶板纯化分离,得到相应的N- 芳基甘氨酸酯类衍生物,其反应式为:
Figure BDA0002432073960000061
产物纯度为99%,产率为60%。核磁数据分析为:1HNMR(600MHz,CDCl3)δ H7.26(d,J=7.1Hz,2H),6.49(t,J=18.1Hz,2H),4.24(q,J=6.9Hz,2H),3.85(s,2H),1.29 (t,J=6.9Hz,3H).
13CNMR(151MHz,CDCl3)δC170.77,145.95,131.96,114.48,109.79,61.42,45.65,14.13.
实施例5
室温下,向10mL圆底烧瓶中,加入12.3mg(0.1mmol)2-甲氧基苯胺,22.8mg(0.2mmol)重氮乙酸乙酯,7.1mg(0.02mmol)三氟甲磺酸亚铁,3.7mg(5.0mol%) [Ir(ppy)2(MeCN)2]PF6和1mL无水甲醇,用胶塞和封口膜密封后,在氮气保护下进行冷冻除氧,置于30W蓝色LEDs灯下,光照24小时并不断搅拌。用TLC监测反应进度。
后处理:反应结束后,反应溶剂经旋转蒸发仪浓缩旋干后,再以体积比为5:1的石油醚:乙酸乙酯的混合溶液作为展开剂,进行薄层层析硅胶板纯化分离,得到相应的N-芳基甘氨酸酯类衍生物,其反应式为:
Figure BDA0002432073960000062
产物纯度为99%,产率为78%。核磁数据分析为:1HNMR(600MHz,CDCl3)δH 6.86(t,J=7.6Hz,1H),6.79(d,J=7.9Hz,1H),6.71(t,J=7.7Hz,1H),6.51(t,J=20.3Hz,1H),4.24(q,J=7.1Hz,2H),3.92(s,2H),3.86(s,3H),1.29(t,J=7.1Hz,3H).
13CNMR(151MHz,CDCl3)δC171.12,147.06,137.03,121.09,117.42,109.93,109.56,61.18,55.40,45.68,14.16.
实施例6
室温下,向10mL圆底烧瓶中,加入13.7mg(0.1mmol)3,4-亚甲二氧基苯胺,22.8mg(0.2mmol)重氮乙酸乙酯,7.1mg(0.02mmol)三氟甲磺酸亚铁,3.7mg(5.0mol%) [Ir(ppy)2(MeCN)2]PF6和1mL无水甲醇,用胶塞和封口膜密封后,在氮气保护下进行冷冻除氧,置于30W蓝色LEDs灯下,光照12小时并不断搅拌。用TLC监测反应进度。
后处理:反应结束后,反应溶剂经旋转蒸发仪浓缩旋干后,再以体积比为5:1的石油醚:乙酸乙酯的混合溶液作为展开剂,进行薄层层析硅胶板纯化分离,得到相应的N-芳基甘氨酸酯类衍生物,其反应式为:
Figure BDA0002432073960000071
产物纯度为99%,产率为46%。核磁数据分析为:1HNMR(600MHz,CDCl3)δH 6.67(d,J=7.7Hz,1H),6.26(s,1H),6.03(d,J=8.1Hz,1H),5.86(s,2H),4.28–4.21(m, 2H),3.84(s,2H),1.29(t,J=7.0Hz,3H).
13CNMR(151MHz,CDCl3)δC171.18,148.35,142.71,140.18,108.58,104.48,100.65,96.29,61.27,46.73,14.10.
实施例7
室温下,向10mL圆底烧瓶中,加入10.9mg(0.1mmol)4-羟基苯胺,22.8mg(0.2mmol)重氮乙酸乙酯,7.1mg(0.02mmol)三氟甲磺酸亚铁,3.7mg(5.0mol%) [Ir(ppy)2(MeCN)2]PF6和1mL无水甲醇,用胶塞和封口膜密封后,在氮气保护下进行冷冻除氧,置于30W蓝色LEDs灯下,光照24小时并不断搅拌。用TLC监测反应进度。
后处理:反应结束后,反应溶剂经旋转蒸发仪浓缩旋干后,再以体积比为5:1的石油醚:乙酸乙酯的混合溶液作为展开剂,进行薄层层析硅胶板纯化分离,得到相应的N-芳基甘氨酸酯类衍生物,其反应式为:
Figure BDA0002432073960000072
产物纯度为99%,产率为46%。其核磁数据分析为:1HNMR(600MHz,CDCl3)δ H6.67(d,J=7.0Hz,2H),6.51(d,J=7.1Hz,2H),4.22(dd,J=14.0,6.9Hz,2H),3.83(d,J=17.3Hz,2H),1.30–1.25(m,3H).
13CNMR(151MHz,CDCl3)δC171.63(d,J=22.7Hz),148.64,141.33(d,J=173.9Hz),116.19,114.78,61.33,46.95,15.92.
实施例8
室温下,向10mL圆底烧瓶中,加入14.9mg(0.1mmol)4-叔丁基苯胺,22.8mg(0.2mmol)重氮乙酸乙酯,7.1mg(0.02mmol)三氟甲磺酸亚铁,3.7mg(5.0mol%) [Ir(ppy)2(MeCN)2]PF6和1mL无水甲醇,用胶塞和封口膜密封后,在氮气保护下进行冷冻除氧,置于30W蓝色LEDs灯下,光照24小时并不断搅拌。用TLC监测反应进度。
后处理:反应结束后,反应溶剂经旋转蒸发仪浓缩旋干后,再以体积比为20:1的石油醚:乙酸乙酯的混合溶液作为展开剂,进行薄层层析硅胶板纯化分离,得到相应的N- 芳基甘氨酸酯类衍生物,其反应式为:
Figure BDA0002432073960000081
产物纯度为99%,产率为50%。其核磁数据分析为:1HNMR(600MHz,CDCl3)δ H7.14(d,J=7.2Hz,2H),6.49(d,J=7.3Hz,2H),4.16(q,J=6.8Hz,2H),3.80(s,2H),1.22 –1.16(m,12H).
13CNMR(151MHz,CDCl3)δC171.28,144.62,140.88,126.12(d,J=27.3Hz),112.72,64.10,46.05,33.82,31.40(d,J=16.5Hz),14.01(d,J=37.1Hz).
实施例9
室温下,向10mL圆底烧瓶中,加入16.9mg(0.1mmol)2-苯基苯胺,22.8mg(0.2mmol)重氮乙酸乙酯,7.1mg(0.02mmol)三氟甲磺酸亚铁,3.7mg(5.0mol%) [Ir(ppy)2(MeCN)2]PF6和1mL无水甲醇,用胶塞和封口膜密封后,在氮气保护下进行冷冻除氧,置于30W蓝色LEDs灯下,光照24小时并不断搅拌。用TLC监测反应进度。
后处理:反应结束后,反应溶剂经旋转蒸发仪浓缩旋干后,再以体积比为20:1的石油醚:乙酸乙酯的混合溶液作为展开剂,进行薄层层析硅胶板纯化分离,得到相应的N- 芳基甘氨酸酯类衍生物,其反应式为:
Figure BDA0002432073960000082
产物纯度为99%,产率为75%。其核磁数据分析为:1HNMR(600MHz,CDCl3)δ H7.46(d,J=2.1Hz,4H),7.36(d,J=2.5Hz,1H),7.23(t,J=7.7Hz,1H),7.13(d,J=7.3Hz, 1H),6.81(t,J=7.3Hz,1H),6.57(d,J=8.1Hz,1H),4.18(q,J=7.0Hz,2H),3.87(s,2H), 1.25(t,J=6.9Hz,3H).
13CNMR(151MHz,CDCl3)δC171.00,143.91,139.05,130.32,129.26,128.89,128.65,128.12,127.32,117.78,110.36,61.19,45.82,14.11.
实施例10
室温下,向10mL圆底烧瓶中,加入14.3mg(0.1mmol)2-萘胺,22.8mg(0.2mmol) 重氮乙酸乙酯,7.1mg(0.02mmol)三氟甲磺酸亚铁,3.7mg(5.0mol%) [Ir(ppy)2(MeCN)2]PF6和1mL无水甲醇,用胶塞和封口膜密封后,在氮气保护下进行冷冻除氧,置于30W蓝色LEDs灯下,光照24小时并不断搅拌。用TLC监测反应进度。
后处理:反应结束后,反应溶剂经旋转蒸发仪浓缩旋干后,再以体积比为20:1的石油醚:乙酸乙酯的混合溶液作为展开剂,进行薄层层析硅胶板纯化分离,得到相应的N- 芳基甘氨酸酯类衍生物,其反应式为:
Figure BDA0002432073960000091
产物纯度为99%,产率为70%。其核磁数据分析为:1HNMR(600MHz,CDCl3)δ H7.59(d,J=8.1Hz,1H),7.54(dd,J=14.8,8.5Hz,1H),7.28(t,J=7.4Hz,1H),7.13(t,J=7.6Hz,1H),6.85(d,J=8.7Hz,1H),6.65(s,1H),4.40–4.08(m,1H),3.90(s,1H),1.22(t, J=7.1Hz,1H).
13CNMR(151MHz,CDCl3)δC170.97,144.60,134.93,129.05,127.75,127.60,126.34,125.96,122.28,117.84,104.67,6136,45.76,14.15.
实施例11
室温下,向10mL圆底烧瓶中,加入9.4mg(0.1mmol)3-氨基吡啶,22.8mg(0.2mmol)重氮乙酸乙酯,7.1mg(0.02mmol)三氟甲磺酸亚铁,3.7mg(5.0mol%) [Ir(ppy)2(MeCN)2]PF6和1mL无水甲醇,用胶塞和封口膜密封后,在氮气保护下进行冷冻除氧,置于30W蓝色LEDs灯下,光照24小时并不断搅拌。用TLC监测反应进度。
后处理:反应结束后,反应溶剂经旋转蒸发仪浓缩旋干后,再以体积比为5:1的石油醚:乙酸乙酯的混合溶液作为展开剂,进行薄层层析硅胶板纯化分离,得到相应的N-芳基甘氨酸酯类衍生物,其反应式为:
Figure BDA0002432073960000092
产物纯度为99%,产率为55%。其核磁数据分析为:1HNMR(600MHz,CDCl3)δH8.03(d,J=25.1Hz,2H),7.10(d,J=4.2Hz,1H),6.88(s,1H),4.26(d,J=6.3Hz,2H), 3.91(s,2H),1.30(d,J=6.1Hz,3H).
13CNMR(151MHz,CDCl3)δC170.52,142.96,139.33,135.75,123.66,118.90,61.47, 45.13,14.07.
实施例12
室温下,向10mL圆底烧瓶中,加入15.0mg(0.1mmol)2-氨基苯并噻唑,22.8mg(0.2mmol)重氮乙酸乙酯,7.1mg(0.02mmol)三氟甲磺酸亚铁,3.7mg(5.0mol%) [Ir(ppy)2(MeCN)2]PF6和1mL无水甲醇,用胶塞和封口膜密封后,在氮气保护下进行冷冻除氧,置于30W蓝色LEDs灯下,光照40小时并不断搅拌。用TLC监测反应进度。
后处理:反应结束后,反应溶剂经旋转蒸发仪浓缩旋干后,再以体积比为3:1的石油醚:乙酸乙酯的混合溶液作为展开剂,进行薄层层析硅胶板纯化分离,得到相应的N-芳基甘氨酸酯类衍生物,其反应式为:
Figure BDA0002432073960000101
产物纯度为99%,产率为21%。其核磁数据分析为:1HNMR(600MHz,CDCl3)δ H7.57(d,J=8.3Hz,2H),7.30(t,J=7.9Hz,1H),7.10(t,J=7.7Hz,1H),6.06(s,1H),4.29 (s,2H),4.27(q,J=7.2Hz,2H),1.30(t,J=7.1Hz,3H).
13CNMR(151MHz,CDCl3)δC169.93,165.81,152.05,130.76,125.90,122.00,120.80,119.26,77.21,77.00,76.79,61.76,45.96,14.11.
实施例13
室温下,向10mL圆底烧瓶中,加入14.4mg(0.1mmol)5-氨基喹啉,22.8mg(0.2mmol)重氮乙酸乙酯,7.1mg(0.02mmol)三氟甲磺酸亚铁,3.7mg(5.0mol%) [Ir(ppy)2(MeCN)2]PF6和1mL无水甲醇,用胶塞和封口膜密封后,在氮气保护下进行冷冻除氧,置于30W蓝色LEDs灯下,光照24小时并不断搅拌。用TLC监测反应进度。
后处理:反应结束后,反应溶剂经旋转蒸发仪浓缩旋干后,再以体积比为5:1的石油醚:乙酸乙酯的混合溶液作为展开剂,进行薄层层析硅胶板纯化分离,得到相应的N-芳基甘氨酸酯类衍生物,其反应式为:
Figure BDA0002432073960000111
产物纯度为99%,产率为65%。其核磁数据分析为:1HNMR(600MHz,CDCl3)δ H8.77(s,1H),8.16(d,J=8.4Hz,1H),7.50–7.41(m,2H),7.21(dd,J=4.1,3.3Hz,1H), 6.39(d,J=6.5Hz,1H),5.10(s,1H),4.20(q,J=6.7Hz,2H),3.93(s,2H),1.23(t,J=6.9Hz, 3H).
13CNMR(151MHz,CDCl3)δC170.80,150.00,148.95,142.32,130.07,128.83,119.44,119.07,118.37,104.67,61.51,45.69,14.09.
实施例14
室温下,向10mL圆底烧瓶中,加入10.9mg(0.1mmol)2-氨基-4-甲基嘧啶,22.8mg(0.2mmol)重氮乙酸乙酯,7.1mg(0.02mmol)三氟甲磺酸亚铁,3.7mg(5.0mol%) [Ir(ppy)2(MeCN)2]PF6和1mL无水甲醇,用胶塞和封口膜密封后,在氮气保护下进行冷冻除氧,置于30W蓝色LEDs灯下,光照40小时并不断搅拌。用TLC监测反应进度。
后处理:反应结束后,反应溶剂经旋转蒸发仪浓缩旋干后,再以体积比为3:1的石油醚:乙酸乙酯的混合溶液作为展开剂,进行薄层层析硅胶板纯化分离,得到相应的N-芳基甘氨酸酯类衍生物,其反应式为:
Figure BDA0002432073960000112
产物纯度为99%,产率为23%。其核磁数据分析为:1HNMR(600MHz,CDCl3)δ H8.09(d,J=5.0Hz,1H),6.40(d,J=5.0Hz,1H),4.16(q,J=7.1Hz,2H),4.12(d,J=5.6Hz, 2H),2.27(s,3H),1.21(t,J=7.1Hz,3H).
13CNMR(151MHz,CDCl3)δC170.81,168.04,161.63,157.45,111.07,61.14,43.48,24.03,14.16.
由上述实施例可知,本发明利用可见光诱导进行反应,避免了高温高压等强烈条件,既不需要加热,在室温下进行反应,减少了能耗;且具有良好的反应活性与选择性,减少了有害副产物的产生,更绿色环保,解决了现有N-芳基甘氨酸酯类衍生物合成需要高温、生物催化剂或金属有机框架等导致的耗能高、成本高且污染环境的问题。
以上所述的实施例只是本发明的一种较佳的方案,并非对本发明作任何形式上的限制,在不超出权利要求所记载的技术方案的前提下还有其它的变体及改型。

Claims (2)

1.一种N-芳基甘氨酸酯类衍生物的制备方法,其特征在于该方法包括如下步骤:
室温下,向10mL圆底烧瓶中,加入12.3mg2-甲氧基苯胺,22.8mg重氮乙酸乙酯,7.1mg三氟甲磺酸亚铁,3.7mg[Ir(ppy)2(MeCN)2]PF6和1mL无水甲醇,用胶塞和封口膜密封后,在氮气保护下进行冷冻除氧,置于30W蓝色LEDs灯下,光照24小时并不断搅拌,反应结束后,反应溶剂经旋转蒸发仪浓缩旋干后,再以体积比为5:1的石油醚:乙酸乙酯的混合溶液作为展开剂,进行薄层层析硅胶板纯化分离,得到相应的N-芳基甘氨酸酯类衍生物。
2.一种N-芳基甘氨酸酯类衍生物的制备方法,其特征在于该方法包括如下步骤:
室温下,向10mL圆底烧瓶中,加入16.9mg2-苯基苯胺,22.8mg重氮乙酸乙酯,7.1mg三氟甲磺酸亚铁,3.7mg[Ir(ppy)2(MeCN)2]PF6和1mL无水甲醇,用胶塞和封口膜密封后,在氮气保护下进行冷冻除氧,置于30W蓝色LEDs灯下,光照24小时并不断搅拌,反应结束后,反应溶剂经旋转蒸发仪浓缩旋干后,再以体积比为20:1的石油醚:乙酸乙酯的混合溶液作为展开剂,进行薄层层析硅胶板纯化分离,得到相应的N-芳基甘氨酸酯类衍生物。
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