CN113105368A - 一种n-芳基硝酮衍生物的合成方法 - Google Patents

一种n-芳基硝酮衍生物的合成方法 Download PDF

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CN113105368A
CN113105368A CN202110409072.1A CN202110409072A CN113105368A CN 113105368 A CN113105368 A CN 113105368A CN 202110409072 A CN202110409072 A CN 202110409072A CN 113105368 A CN113105368 A CN 113105368A
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宣俊
蔡宝贵
李琳
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Anhui University
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Abstract

本发明公开了一种N‑芳基硝酮衍生物的合成方法,在光照条件下,利用芳基重氮酯化合物1与亚硝基化合物2在溶剂中进行反应,芳基重氮酯化合物1脱去一分子氮气并产生活性卡宾物种,亚硝基化合物2通过其亲核的N‑中心与活性卡宾物种反应生成两性离子中间体,之后重排生成N‑芳基硝酮衍生物3。本方法不需要任何催化剂以及添加剂,只需要可见光作为绿色能源进行驱动,反应条件温和,易于操作,并能通过流动光化学的方法进行大量合成。

Description

一种N-芳基硝酮衍生物的合成方法
技术领域
本发明属于有机合成领域,具体涉及一种N-芳基硝酮衍生物的合成方法。
背景技术
总的来说,硝酮常被用作1,3-偶极子参与环加成反应构建生物学上重要的杂环化合物。此外,硝酮可以作为亲电试剂与各种亲核试剂反应合成N,N-二取代羟胺,或者作为自由基受体去构建新的化学键。在过渡金属催化条件下,硝酮也可用作导向基团,以实现sp2C-H键活化反应。在过去几年里也相继开发了许多其他有用的硝酮反应类型。
由于硝酮的应用非常广泛,因此有机化学家们也相继的开发了许多合成硝酮的方法。N- 单取代的羟胺与醛或酮的缩合是制备硝酮最有效的方法之一,但这些过程往往需要使用脱水试剂或在高温条件下才能进行(path A)。仲胺、亚胺或N,N-二取代羟胺的氧化是合成硝酮的另一有效方法,通常需要消耗化学计量的氧化剂(path B)。此外,在金属催化条件下肟与各种亲电试剂反应构建硝酮的方法也引起了人们的广泛关注(path C)。但对于直接使用商业获得的亚硝基芳烃为原料合成硝酮的方法相对较少有人报道。
Figure BDA0003023453640000011
发明内容
本课题组通过研究发现,在蓝色LED灯的照射下,芳基重氮酯脱去一分子氮气并产生活性卡宾物种,亚硝基苯通过其亲核的N-中心与活性卡宾物种反应生成两性离子中间体,之后将重排成更稳定的硝酮,从而为硝酮的合成提供了温和的反应途径。同时我们也尝试了使用绿色LED灯作为光源,结果表明反应速率会急速下降。
Figure BDA0003023453640000012
基于以上研究背景,本发明提供了一种N-芳基硝酮衍生物的合成方法,利用芳基重氮酯与亚硝基芳烃在四氢呋喃作为溶剂作用下,简便的制备了各种N-芳基硝酮衍生物。本方法不需要任何催化剂以及添加剂,只需要可见光作为绿色能源进行驱动。
本发明N-芳基硝酮衍生物的合成方法,将芳基重氮酯化合物1、亚硝基化合物2于溶剂 THF中,在光照条件下进行反应,分离提纯后得到目标产物3。
合成路线如下所示:
Figure BDA0003023453640000021
化合物1中的取代基R可以为甲基、乙基、丙基、丁基、异丙基、环己基、烯丙基、苯基、酰胺基、酯基或醚基,取代基Ar1为芳基。
化合物2中的取代基Ar2为芳基、吡啶或嘧啶。
所述分离提纯是通过硅胶柱层析分离纯化的方式,洗脱液为石油醚和乙酸乙酯,体积比 10:1-5:1。
相较于现有技术,本发明的有益效果体现在:
1、所使用的原料容易制备,并且亚硝基苯可以商业购买。
2、无需使用任何催化剂以及添加剂,仅仅只需要普通蓝色LED灯进行光照。
3、反应条件温和,易于操作,并能通过流动光化学的方法进行大量合成。
4、氮气作为唯一副产物,符合绿色化学理念。
具体实施方式
下面结合具体实施例对本发明技术方案作进一步的详细说明。
实施例1:
Figure BDA0003023453640000022
在10mL反应瓶中,加入化合物1a(0.2mmol,35.2mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:91%。
化合物3aa经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.17–8.11(m,2H),7.49(m,2H),7.46–7.39(m,6H),3.52(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=164.10,148.09,140.16,130.58,129.87,128.92,128.85,128.25,128.16,122.82,52.64.
实施例2:
Figure BDA0003023453640000031
在10mL反应瓶中,加入化合物1b(0.2mmol,38.0mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:71%。
化合物3ba经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.09–8.04(m,2H),7.52–7.48(m,2H),7.47–7.43(m,3H),7.30–7.27(m,2H),3.56(s,3H),2.41(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=164.58,148.36,141.54,130.04,129.17,129.15,128.53,126.32,124.38,123.20,52.86,21.67.
实施例3:
Figure BDA0003023453640000032
在10mL反应瓶中,加入化合物1c(0.2mmol,38.8mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:95%。
化合物3ca经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.23–8.18(m,2H),7.51–7.45(m,5H),7.19–7.14(m,2H),3.56(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=163.49(d,J=252.7Hz),164.29,148.27,131.08(d,J=8.5Hz),130.23,129.25,125.32,123.10,115.62(d,J=21.8Hz),52.99.
实施例4:
Figure BDA0003023453640000041
在10mL反应瓶中,加入化合物1d(0.2mmol,42.0mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:87%。
化合物3da经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.23–8.18(m,2H),7.51–7.45(m,5H),7.19–7.14(m,2H),3.56(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=163.49(d,J=252.7Hz),164.29,148.27,131.08(d,J=8.5Hz),130.23,129.25,125.32,123.10,115.62(d,J=21.8Hz),52.99.
实施例5:
Figure BDA0003023453640000042
在10mL反应瓶中,加入化合物1e(0.2mmol,50.8mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:83%。
化合物3ea经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.05–8.02(m,2H),7.61(d,J=2.0Hz,1H),7.59(d,J=2.0Hz,1H),7.51–7.45(m,5H),3.56(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=164.07,148.35,139.62,131.67,130.30,130.03,129.25,127.97,124.98,123.03,53.01.
实施例6:
Figure BDA0003023453640000051
在10mL反应瓶中,加入化合物1f(0.2mmol,48.8mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:76%。
化合物3fa经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.24–8.20(m,2H),7.74–7.71(m,2H),7.51–7.46(m,5H),3.58(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=163.90,148.39,139.15,132.52,132.14,131.81,130.50,129.32,128.96,125.38,125.34,123.00,53.09.
熔点:89-90℃。
高分辨:计算值:[M+H]+324.0848,实测值:324.0844.
实施例7:
Figure BDA0003023453640000052
在10mL反应瓶中,加入化合物1g(0.2mmol,42.0mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:92%。
化合物3ga经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.25–8.21(m,1H),7.96–7.92(m,1H),7.52–7.41(m,7H),3.57(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=163.95,148.33,139.25,134.48,130.81,130.69,130.36,129.63,129.26,128.40,126.67,123.03,53.05.
高分辨:计算值:[M+H]+290.0584,实测值:290.0586.
实施例8:
Figure BDA0003023453640000061
在10mL反应瓶中,加入化合物1h(0.2mmol,44.0mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:67%。
化合物3ha经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=7.95(d,J=1.8Hz,1H),7.62(dd,J=8.4,1.8 Hz,1H),7.51–7.43(m,5H),6.89(d,J=8.4Hz,1H),6.04(s,2H),3.54(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=164.56,149.60,148.24,147.56,140.36,130.04,129.18,124.26,123.24,108.63,108.29,101.68,52.94.
熔点:113-115℃
高分辨:计算值:[M+H]+300.0872,实测值:300.0876.
实施例9:
Figure BDA0003023453640000062
在10mL反应瓶中,加入化合物1i(0.2mmol,45.2mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:70%。
化合物3ia经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.97(s,1H),7.95–7.83(m,4H),7.57–7.53(m,3H),7.52–7.46(m,4H),3.60(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=164.57,148.42,140.65,134.14,132.79,130.18,129.44,129.23,127.95,127.85,127.54,126.57,126.39,124.79,123.22,52.97.
实施例10:
Figure BDA0003023453640000071
在10mL反应瓶中,加入化合物1j(0.2mmol,70.8mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:54%。
化合物3ja经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.23–8.19(m,2H),7.52–7.44(m,5H),7.19–7.15(m,2H),3.56(s,3H),2.11–2.06(m,9H),1.78(q,J=2.3Hz,6H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=175.65,164.33,152.65,148.31,139.86,130.17,130.00,129.21,126.31,123.15,121.63,52.93,41.12,38.67,36.38,27.84.
熔点:143-145℃
高分辨:计算值:[M+H]+434.1967,实测值:434.1965.
实施例11:
Figure BDA0003023453640000072
在10mL反应瓶中,加入化合物1k(0.2mmol,43.2mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色油状,产率:60%。
化合物3ka经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.24–8.20(m,2H),7.51–7.48(m,2H),7.46–7.43(m,3H),7.07–7.05(m,2H),4.76(d,J=2.4Hz,2H),3.55(s,3H),2.55(t,J=2.4Hz,1H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=164.56,159.16,148.21,130.52,130.04,129.19,123.23,122.44,114.71,77.85,76.07,55.81,52.91.
高分辨:计算值:[M+H]+310.1079,实测值:310.1081.
实施例12:
Figure BDA0003023453640000081
在10mL反应瓶中,加入化合物1l(0.2mmol,38.0mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色油状,产率:88%。
化合物3la经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.24–8.11(m,2H),7.55–7.43(m,8H),4.04(q,J=7.1Hz,2H),0.94(t,J=7.1Hz,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=163.90,148.39,130.88,130.12,129.16,129.10,128.61,128.44,124.43,123.39,62.39,13.38.
高分辨:计算值:[M+H]+270.1130,实测值:270.1136.
实施例13:
Figure BDA0003023453640000082
在10mL反应瓶中,加入化合物1m(0.2mmol,66.0mg)、亚硝基苯2a(0.1mmol,10.7mg)以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色油状,产率:95%。
化合物3ma经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.23–8.13(m,2H),7.54–7.43(m,8H),3.96(t,J=6.7Hz,2H),1.34–1.16(m,20H),0.90–0.87(m,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=164.09,148.43,130.87,130.13,129.19,128.64,128.43,124.44,123.35,66.64,31.89,29.61,29.50,29.38,29.32,29.04,27.90,25.63,22.67, 14.10.
高分辨:计算值:[M+H]+410.2695,实测值:410.2693.
实施例14:
Figure BDA0003023453640000091
在10mL反应瓶中,加入化合物1n(0.2mmol,40.8mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色油状,产率:72%。
化合物3na经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.24–8.17(m,2H),7.54–7.43(m,8H),4.91(p,J=6.3Hz,1H),0.97(d,J=6.3Hz,6H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=163.34,148.29,141.08,130.87,130.07,129.15,129.11,128.55,128.43,123.57,70.61,20.99.
高分辨:计算值:[M+H]+284.1287,实测值:284.1289.
实施例15:
Figure BDA0003023453640000092
在10mL反应瓶中,加入化合物1o(0.2mmol,44.0mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色油状,产率:96%。
化合物3oa经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.22–8.14(m,2H),7.56–7.44(m,8H),4.15–4.11(m,2H),3.31–3.29(m,2H),3.26(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=163.92,148.41,140.56,130.87,130.12,129.17,129.09,128.69,128.39,123.35,69.51,64.94,58.80.
高分辨:计算值:[M+H]+300.1236,实测值:300.1238.
实施例16:
Figure BDA0003023453640000101
在10mL反应瓶中,加入化合物1p(0.2mmol,43.2mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色油状,产率:92%。
化合物3pa经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.21–8.12(m,2H),7.55–7.43(m,8H),4.86(t,J=1.6Hz,1H),4.82–4.80(m,1H),4.36(s,2H),1.53(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=163.77,148.39,140.53,138.27,130.87,130.20,129.25,128.62,128.43,123.28,115.05,69.90,19.41.
高分辨:计算值:[M+H]+296.1287,实测值:296.1284.
实施例17:
Figure BDA0003023453640000102
在10mL反应瓶中,加入化合物1q(0.2mmol,43.2mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:70%。
化合物3qa经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.22–8.15(m,2H),7.55–7.44(m,8H),4.92–4.82(m,1H),2.17–2.09(m,2H),1.71–1.53(m,4H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=163.10,148.35,140.80,130.88,130.10,129.14,129.05,128.60,128.43,123.55,70.72,29.49,13.35.
熔点:96-98℃。
高分辨:计算值:[M+H]+296.1287,实测值:296.1288.
实施例18:
Figure BDA0003023453640000111
在10mL反应瓶中,加入化合物1r(0.2mmol,46.0mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:63%。
化合物3ra经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.25–8.16(m,2H),7.55–7.43(m,8H),5.12–5.06(m,1H),1.68–1.60(m,2H),1.50–1.40(m,4H),1.34–1.22(m,2H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=163.57,148.25,141.11,130.88,130.12,129.18,129.13,128.58,128.42,123.54,79.82,32.03,23.45.
高分辨:计算值:[M+H]+310.1443,实测值:310.1441.
实施例19:
Figure BDA0003023453640000112
在10mL反应瓶中,加入化合物1s(0.2mmol,59.6mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:56%。
化合物3sa经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.23–8.16(m,2H),7.58–7.53(m,2H),7.50–7.44(m,6H),4.82–4.76(m,1H),2.17–2.08(m,1H),1.65–1.55(m,3H),1.21–1.13(m,1H),0.92–0.87(m,1H),0.81(d,J=5.0Hz,6H),0.65(s,3H),0.35(dd,J=13.9,3.5Hz,1H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=164.29,148.27,141.17,130.90,130.21,129.35,129.27,128.56,128.45,123.60,83.18,48.57,47.74,44.49,35.48,27.61,26.84,19.52, 18.68,13.20.
高分辨:计算值:[M+H]+378.2069,实测值:3748.2067.
实施例20:
Figure BDA0003023453640000121
在10mL反应瓶中,加入化合物1t(0.2mmol,60.1mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:83%。
化合物3ta经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.23–8.16(m,2H),7.56–7.42(m,8H),4.70–4.58(m,1H),1.65–1.59(m,2H),1.54–1.46(m,2H),1.46–1.17(m,3H),0.99–0.92(m,1H),0.79(dd,J=13.9,6.8Hz,6H),0.63(d,J=6.9Hz,3H),0.55–0.45(m,1H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=163.55,148.13,141.31,130.87,130.09,129.21,129.18,128.55,128.42,123.77,46.42,39.39,33.82,31.20,25.53,22.75,21.87,20.72, 15.70.
熔点:99-101℃
高分辨:计算值:[M+H]+380.2226,实测值:380.2227.
实施例21:
Figure BDA0003023453640000122
在10mL反应瓶中,加入化合物1u(0.2mmol,60.1mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:51%。
化合物3ua经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.20–8.15(m,2H),7.55–7.43(m,8H),5.09–4.99(m,1H),4.07–3.93(m,2H),1.97–1.84(m,2H),1.68(d,J=1.4Hz,3H),1.59(d,J=1.3Hz,3H),1.33–1.07(m,5H),0.76(d,J=6.5Hz,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=164.06,148.42,140.79,131.47,130.86,130.11,129.18,129.15,128.61,128.42,124.30,123.33,64.95,36.77,34.68,29.07,25.67,25.21, 19.07,17.62.
高分辨:计算值:[M+H]+380.2226,实测值:380.2224.
实施例22:
Figure BDA0003023453640000131
在10mL反应瓶中,加入化合物1v(0.2mmol,63.0mg)、亚硝基苯2a(0.1mmol,10.7mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=5:1],即得到纯净的产物,黄色固体,产率:79%。
化合物3va经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=7.97–7.92(m,3H),7.49–7.37(m,8H),4.33(t,J=5.4Hz,2H),4.23(t,J=5.1Hz,2H),2.18(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=163.16,150.89,148.25,139.35,138.09,133.13,130.97,130.27,129.31,128.86,128.62,128.36,122.81,64.29,44.22,14.05.
高分辨:计算值:[M+H]+395.1335,实测值:395.1352.
实施例23:
Figure BDA0003023453640000141
在10mL反应瓶中,加入化合物1a(0.2mmol,35.2mg)、亚硝基苯2b(0.1mmol,14.1mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:84%。
化合物3ab经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.16–8.06(m,2H),7.49–7.41(m,7H),3.63(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=164.23,146.70,140.76,136.08,131.07,129.43,128.60,128.49,125.77,124.55,53.10.
高分辨:计算值:[M+H]+290.0584,实测值:290.0584.
实施例24:
Figure BDA0003023453640000142
在10mL反应瓶中,加入化合物1a(0.2mmol,35.2mg)、亚硝基苯2c(0.1mmol,18.5mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:62%。
化合物3ac经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.13–8.07(m,2H),7.61–7.57(m,2H),7.50–7.46(m,3H),7.41–7.37(m,2H),3.63(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=164.23,147.21,140.74,132.44,131.08,128.89,128.61,128.50,124.79,124.17,53.12.
高分辨:计算值:[M+H]+334.0079,实测值:334.0078.
实施例25:
Figure BDA0003023453640000151
在10mL反应瓶中,加入化合物1a(0.2mmol,35.2mg)、亚硝基苯2d(0.1mmol,17.9mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:75%。
化合物3ad经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.17–8.10(m,4H),7.59–7.55(m,2H),7.50–7.47(m,3H),4.41(q,J=7.2Hz,2H),3.59(s,3H),1.42(t,J=7.1Hz,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=165.18,164.11,151.21,140.91,131.97,131.14,130.69,128.69,128.49,124.48,123.23,61.52,53.10,14.23.
实施例26:
Figure BDA0003023453640000152
在10mL反应瓶中,加入化合物1a(0.2mmol,35.2mg)、亚硝基苯2e(0.1mmol,14.9mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:69%。
化合物3ae经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.16–8.11(m,2H),7.48–7.41(m,5H),7.30–7.28(m,2H),3.57(s,3H),2.96(p,J=6.9Hz,1H),1.26(d,J=6.9Hz,6H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=164.57,151.28,146.28,140.27,130.76,129.22,128.52,128.43,127.14,123.04,52.83,33.92,23.75.
高分辨:计算值:[M+H]+298.1443,实测值:298.1449.
实施例27:
Figure BDA0003023453640000161
在10mL反应瓶中,加入化合物1a(0.2mmol,35.2mg)、亚硝基苯2f(0.1mmol,18.3mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:83%。
化合物3af经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.18–8.12(m,2H),7.69–7.65(m,2H),7.62–7.57(m,4H),7.49–7.41(m,6H),3.62(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=164.49,147.39,143.14,140.50,139.46,130.90,129.15,128.95,128.59,128.47,128.11,127.80,127.17,123.54,53.00.
高分辨:计算值:[M+H]+332.1287,实测值:332.1290.
实施例28:
Figure BDA0003023453640000162
在10mL反应瓶中,加入化合物1a(0.2mmol,35.2mg)、亚硝基苯2g(0.1mmol,14.1mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:81%。
化合物3ag经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.14–8.07(m,2H),7.56–7.53(m,1H),7.50–7.38(m,6H),3.63(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=164.12,148.96,140.77,134.95,131.12,130.37,130.21,128.66,128.50,123.75,121.31,53.09.
高分辨:计算值:[M+H]+290.0584,实测值:290.0585.
实施例29:
Figure BDA0003023453640000171
在10mL反应瓶中,加入化合物1a(0.2mmol,35.2mg)、亚硝基苯2h(0.1mmol,12.1mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:86%。
化合物3ah经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.21–8.13(m,2H),7.51–7.47(m,3H),7.35–7.28(m,3H),7.26–7.21(m,1H),3.53(s,3H),2.42(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=163.85,146.84,141.29,132.42,131.32,130.94,129.74,128.52,128.50,126.37,123.34,52.83,16.70.
高分辨:计算值:[M+H]+270.1130,实测值:270.1130.
实施例30:
Figure BDA0003023453640000172
在10mL反应瓶中,加入化合物1a(0.2mmol,35.2mg)、亚硝基苯2i(0.1mmol,18.5mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:95%。
化合物3ai经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.07–7.99(m,2H),7.66(d,J=8.0Hz,1H),7.52–7.39(m,5H),7.31(t,J=7.6Hz,1H),3.60(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=163.04,146.99,141.43,133.60,130.86,130.67,129.02,128.41,128.19,125.25,116.64,52.95.
实施例31:
Figure BDA0003023453640000181
在10mL反应瓶中,加入化合物1a(0.2mmol,35.2mg)、亚硝基苯2j(0.1mmol,21.1mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:66%。
化合物3aj经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.17–8.10(m,2H),7.92–7.88(m,2H),7.81–7.78(m,2H),7.65–7.61(m,3H),7.52–7.48(m,5H),3.63(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=195.16,164.11,150.72,140.97,138.89,136.83,132.98,131.18,131.03,130.00,128.71,128.52,123.23,53.16.
高分辨:计算值:[M+H]+360.1236,实测值:360.1231.
实施例32:
Figure BDA0003023453640000182
在10mL反应瓶中,加入化合物1a(0.2mmol,35.2mg)、亚硝基苯2k(0.1mmol,17.9mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:52%。
化合物3ak经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.14–8.05(m,2H),7.47–7.41(m,5H),6.92–6.87(m,2H),3.97(d,J=6.2Hz,2H),3.60(s,3H),1.80–1.75(m,2H),1.52–1.46(m,2H),0.97(t,J=7.4Hz,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=164.70,160.33,141.51,130.71,129.37,128.50,128.44,125.82,124.53,114.64,68.12,52.94,31.13,19.17,13.80.
高分辨:计算值:[M+H]+328.1549,实测值:328.1545.
实施例33:
Figure BDA0003023453640000191
在10mL反应瓶中,加入化合物1a(0.2mmol,35.2mg)、亚硝基苯2l(0.1mmol,10.8mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:80%。
化合物3al经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.41–8.35(m,1H),8.19–8.12(m,2H),7.99–7.93(m,2H),7.50–7.42(m,4H),3.75(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=164.76,158.09,146.40,139.41,130.98,129.46,129.14,128.34,125.68,118.29,52.81.
高分辨:计算值:[M+H]+257.0926,实测值:257.0924.
实施例34:
Figure BDA0003023453640000192
在10mL反应瓶中,加入化合物1a(0.2mmol,35.2mg)、亚硝基苯2m(0.1mmol,36.1mg)以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:60%。
化合物3am经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.18–8.07(m,2H),7.53–7.46(m,7H),7.07–6.98(m,6H),6.67(d,J=2.3Hz,2H),6.40(t,J=2.2Hz,1H),3.83(s,6H),3.65(s,3H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=164.47,160.98,158.72,155.52,143.39,139.19,133.51,130.88,129.12,128.53,128.46,128.11,128.04,124.85,119.80,118.49,104.52, 99.95,55.33,52.99.
高分辨:计算值:[M+H]+510.1917,实测值:510.1918.
实施例35:
Figure BDA0003023453640000201
在10mL反应瓶中,加入化合物1a(0.2mmol,35.2mg)、亚硝基苯2n(0.1mmol,53.5mg) 以及THF(1mL)于蓝光照射下进行反应,TLC(用薄层层析色谱法)检测至反应完全后减压除去有机溶剂,用硅胶柱层析分离纯化[V(石油醚):V(乙酸乙酯)=10:1-5:1,本实施例优选V(石油醚):V(乙酸乙酯)=10:1],即得到纯净的产物,黄色固体,产率:51%。
化合物3an经测试:
1H NMR(400MHz,CDCl3,300K):δ(ppm)=8.17–8.09(m,2H),7.47–7.38(m,5H),6.82–6.74(m,2H),3.58(s,3H),2.61(t,J=6.8Hz,2H),2.12(s,3H),1.99(s,3H),1.95(s,3H),1.90– 1.77(m,3H),1.55–1.40(m,5H),1.31–1.08(m,18H),0.86(d,J=6.8Hz,12H).
13C NMR(100MHz,CDCl3,300K):δ(ppm)=164.65,160.02,149.12,142.95,141.88,140.23,130.77,129.24,128.48,128.44,127.74,125.90,124.74,123.60,118.08,115.04,79.97, 75.15,68.29,52.80,40.03,39.35,37.45,37.37,32.77,32.67,31.12,27.96,24.79,24.42,23.82, 22.70,22.60,21.02,20.59,19.73,19.66,19.59,12.75,11.89,11.81.
高分辨:计算值:[M+H]+684.4628,实测值:684.4620。

Claims (5)

1.一种N-芳基硝酮衍生物的合成方法,其特征在于:
在光照条件下,利用芳基重氮酯化合物1与亚硝基化合物2在溶剂中进行反应,芳基重氮酯化合物1脱去一分子氮气并产生活性卡宾物种,亚硝基化合物2通过其亲核的N-中心与活性卡宾物种反应生成两性离子中间体,之后重排生成N-芳基硝酮衍生物3;
合成路线如下所示:
Figure FDA0003023453630000011
2.根据权利要求1所述的合成方法,其特征在于:
反应在在蓝色LED灯的照射下进行。
3.根据权利要求1所述的合成方法,其特征在于:
芳基重氮酯化合物1中的取代基R为甲基、乙基、丙基、丁基、异丙基、环己基、烯丙基、苯基、酰胺基、酯基或醚基,取代基Ar1为芳基。
4.根据权利要求1所述的合成方法,其特征在于:
亚硝基化合物2中的取代基Ar2为芳基、吡啶或嘧啶。
5.根据权利要求1所述的合成方法,其特征在于:
反应结束后分离提纯获得目标产物;所述分离提纯是通过硅胶柱层析分离纯化的方式,洗脱液为石油醚和乙酸乙酯,体积比10:1-5:1。
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