CN107602414A - 一种二苯甲酮肟二聚体晶体化合物的合成方法及用途 - Google Patents

一种二苯甲酮肟二聚体晶体化合物的合成方法及用途 Download PDF

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CN107602414A
CN107602414A CN201711031790.XA CN201711031790A CN107602414A CN 107602414 A CN107602414 A CN 107602414A CN 201711031790 A CN201711031790 A CN 201711031790A CN 107602414 A CN107602414 A CN 107602414A
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reaction
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罗梅
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Hefei Xiangchen Chemical Engineering Co Ltd
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Hefei Xiangchen Chemical Engineering Co Ltd
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Abstract

一种有如下结构式及晶胞参数的化合物合成方法:是无水无氧条件下,2.0008g二苯甲酮肟与1.1951g脲素在氯苯溶剂中有ZnCl2存在时于无水无氧条件下回流反应48小时,ZnCl2用量为原料量的15‑20mol%(摩尔百分比)反应停止后,即反应结束后脱去氯苯,加水溶解后用氯仿萃取,萃取相脱溶后用柱层析纯化;将粗产品用石油醚/二氯甲烷按体积比为1:1柱层析,得白色晶体合物,

Description

一种二苯甲酮肟二聚体晶体化合物的合成方法及用途
一、技术领域
本发明涉及一种化合物及其制备方法,特别涉及二苯甲酮肟二聚体的合成方法及用途。
二、背景技术
是重要的医药农药中间体,其合成方法已有大量文献报道【1-3】:
参考文献:
1. Asymmetric Nitrone Synthesis via Ligand-Enabled Copper-Catalyzed Cope-Type Hydroamination of Cyclopropene with Oxime, Li, Zhanyu et al, Journal ofthe American Chemical Society, 139(34), 11702-11705; 2017
2. Bronsted acid catalyzed transoximation reaction: synthesis ofaldoximes and ketoximes without use of hydroxylamine salts, Hyodo, Kengo etal,Green Chemistry, 18(21), 5788-5793; 2016
3. Easy Access to 1-Amino and 1-Carbon Substituted Isoquinolines viaCobalt-Catalyzed C-H/N-O Bond Activation,Muralirajan, Krishnamoorthy et al,Advanced Synthesis & Catalysis, 358(5), 774-783; 2016。
三、发明内容
本发明旨在为有机合成领域特别是制备药物提供一种手性化合物,所要解决的技术问题是遴选相应的原料并建立相应的方法合成化合物。
(一)本发明所称的化合物是以下化学式(Ⅰ)所合物:
(Ⅰ)。
其化学名称:二苯甲酮肟二聚体,简称化合物(I)。
化合物(Ⅰ)的合成方法是脲素与二苯甲酮肟在有机溶剂氯苯于催化剂氯化锌5-10mol%存在条件下合成的,化学反应式如下:
本化合物(Ⅰ) 的合成方法包括合成、分离和纯化,所述的合成是2.0008g二苯甲酮肟与1.1951g脲素在氯苯溶剂中有ZnCl2存在时于无水无氧条件下回流反应48小时,ZnCl2用量为原料量的15-20mol%(摩尔百分比)反应停止后, 即反应结束后脱去氯苯,加水溶解后用氯仿萃取,萃取相脱溶后用柱层析纯化;将粗产品用石油醚/ 二氯甲烷按体积比为1:1柱层析,得白色晶体合物。
该反应的反应机理可推测如下:
二苯甲酮肟在脲素及路易斯酸氯化锌的作用下,2分子的二苯甲酮肟聚合形成二聚体晶体化合物I。
本化合物的制备,采用简易,高效的有机合成方法,一步合成化合物,经X-衍射,NMR,IR及元素分析确定其结构。
四、附图说明
图1是二苯甲酮肟二聚体晶体化合物 (I) 的单晶衍射图。
五、具体实施方式
1.二苯甲酮肟二聚体晶体的制备
在100mL两口瓶中,无水无氧条件下2.0008g二苯甲酮肟与1.1951g脲素在氯苯溶剂中有ZnCl2存在时于无水无氧条件下回流反应48小时,ZnCl2用量为原料量的15-20mol%(摩尔百分比)反应停止后, 即反应结束后脱去氯苯,加水溶解后用氯仿萃取,萃取相脱溶后用柱层析纯化;将粗产品用石油醚/ 二氯甲烷按体积比为1:1柱层析,得白色晶体合物;产率:72%; m.p.139--141°C:1HNMR (500MHz, CDCl3, 27℃), δ 1 HNMR (600 MHz, CDCl3 ) δ7.33 – 7.39 (m, 6H), 7.45 – 7.50 (m, 14H); 13CNMR (100 MHz, CDCl 3 ) δ 196.8,171.6, 157.9, 137.6, 136.2, 133.3, 132.7, 132.4(x2), 131.5, 131.1, 130.2,130.0(x2), 129.8, 129.4, 129.2, 128.8, 128.7(x2), 128.6, 128.3, 128.2(x3),127.8; IR : IR :3255,3057,2888,1629,1493,1445,1329,1302,1162,1079,1033,998,920,768,732, 699,660; HRMS(EI): m/z (%): calcd for C26H22N2O2: 394.1681 ;found: 394.1648,该化合物晶体数据如下:
经验式 C26H22N2O2
分子量 394.47
温度 100.00(10) K
波长 1.54184 À
晶系, 空间群 单斜晶系, P21/n
晶胞参数 a = 9.4720(4) Å alpha = 90 deg.
b = 8.1349(2)Å beta = 92.545(4) deg
c = 26.5841(10) Å gamma = 90 deg.
体积 2046.38(13)Å^3
电荷密度 8, 1.280 g/m^3
吸收 校正参数 0.646 mm^-1
单胞内的电子数目 832
晶体大小 0.30x 0.15x 0.05mm
Theta 角的范围 9.782 to 146.004
HKL的指标收集范围 -11<=h<=9, -9<=k<=9,-32<=l<=30
收集/独立衍射数据 3973 [R(7int) = 0.0459]
theta = 25.242的数据完整度 96.7%
吸收校正的方法 多层扫描
最大最小的透过率 0.27 and -0.30
精修使用的方法 F^2 的矩阵最小二乘法
数据数目/使用限制的数目/参数数目 3973/16/293
精修使用的方法 1.096
衍射点的一致性因子 R1 = 0.0681,wR2= 0.1622
可观察衍射的吻合因子 R1 = 0.0915, wR2 = 0.1751
差值傅里叶图上的最大峰顶和峰谷 0.123 and -0.135 e.A^-3
晶体典型的键长数据
Atom Atom Length/Å Atom Atom Length/Å
C1 C2 1.489(4) C14 C15 1.484(4)
C1 C8 1.484(4) C14 C21 1.493(4)
C1 N1 1.288(3) C14 N2 1.283(4)
C2 C3 1.400(4) C15 C16 1.392(4)
C2 C7 1.398(4) C15 C20 1.387(4)
C3 C4 1.377(4) C16 C17 1.384(5)
C4 C5 1.389(5) C17 C18 1.377(5)
C5 C6 1.386(4) C18 C19 1.383(5)
C6 C7 1.388(4) C19 C20 1.397(4)
C8 C9 1.404(4) C21 C22 1.397(4)
C8 C13 1.394(4) C21 C26 1.398(4)
C9 C10 1.387(4) C22 C23 1.385(4)
C10 C11 1.377(4) C23 C24 1.393(4)
C11 C12 1.385(4) C24 C25 1.394(5)
C12 C13 1.387(4) C25 C26 1.373(5)
N1 O1 1.437(3) N2 O2 1.446(3)
N1 O1' 1.511(9) N2 O2' 1.587(9)
晶体典型的键角数据:
Atom Atom Atom Angle/˚ Atom Atom Atom Angle/˚
C8 C1 C2 119.5(2) C15 C14 C21 119.2(2)
N1 C1 C2 115.1(2) N2 C14 C15 124.0(3)
N1 C1 C8 125.4(3) N2 C14 C21 116.8(3)
C3 C2 C1 121.1(3) C16 C15 C14 120.9(3)
C7 C2 C1 120.6(2) C20 C15 C14 119.6(3)
C7 C2 C3 118.2(3) C20 C15 C16 119.5(3)
C4 C3 C2 120.7(3) C17 C16 C15 120.1(3)
C3 C4 C5 120.7(3) C18 C17 C16 120.4(3)
C6 C5 C4 119.3(3) C17 C18 C19 120.1(3)
C5 C6 C7 120.3(3) C18 C19 C20 119.8(3)
C6 C7 C2 120.8(3) C15 C20 C19 120.0(3)
C9 C8 C1 123.0(2) C22 C21 C14 119.7(3)
C13 C8 C1 118.9(2) C22 C21 C26 118.7(3)
C13 C8 C9 118.1(2) C26 C21 C14 121.6(3)
C10 C9 C8 120.4(3) C23 C22 C21 121.1(3)
C11 C10 C9 120.7(3) C22 C23 C24 119.6(3)
C10 C11 C12 119.6(3) C23 C24 C25 119.3(3)
C11 C12 C13 120.2(3) C26 C25 C24 121.0(3)
C12 C13 C8 121.0(2) C25 C26 C21 120.2(3)
C1 N1 O1 114.9(2) C14 N2 O2 113.2(2)
C1 N1 O1' 116.0(4) C14 N2 O2' 116.2(5)
亨利反应应用
0.0675g 化合物(I),置于25mL烧瓶中,依次加入1mL四氢呋喃、0.3 mL硝基甲烷和0.5mmol丙酮酸乙酯,常温搅拌反应60h,取样进行1HNMR检测,其转化率为56%;
1 H NMR (CDCl 3 ): δ ) 4.86 (d,J =13.8 Hz, 1H), 4.58 (d, J =13.8 Hz, 1H),4.34 (m, 2H), 3.85(s, 1H), 1.46 (s, 3H), 1.33 (t, J ) 7.2 Hz, 3H).13 C NMR(CDCl 3 ):δ=173.4, 80.9, 72.4, 63.0, 23.8, 13.9。
腈硅化反应应用
2-苯基-2-(三甲硅氧基)丙腈
0.2mmol 化合物I, 苯甲醛0.1mL, TMSCN 0.3 ml (3.3mmol), 2mL 无水甲醇, 相继在30~35˚C下加入,60小时后, 加入水淬灭经柱层后(石油醚/二氯甲烷:5/1),得无色油状液体, 转化率:16.0 %; 1H NMR (300MHz, CDCl3) 7.56–7.59 (m, 0.9 Hz, 2H), 7.31–7.34 (m, 3H), 5.43 (s, 1H), 0.16 (s, 9H). 13C NMR (75 MHz, CDCl3) 136.1, 128.8(x2), 126.2(x2), 119.1, 63.5, -0.39(x3)。

Claims (2)

1.一种有如下结构式及晶胞参数的手性化合物合成方法:包括合成、分离和纯化,所述的合成是无水无氧条件下, 2.0008g二苯甲酮肟与1.1951g脲素在氯苯溶剂中有ZnCl2存在时于无水无氧条件下回流反应48小时,ZnCl2用量为原料量的15-20mol%(摩尔百分比)反应停止后, 即反应结束后脱去氯苯,加水溶解后用氯仿萃取,萃取相脱溶后用柱层析纯化;将粗产品用石油醚/ 二氯甲烷按体积比为1:1柱层析,得白色晶体合物,
(Ⅰ)
该手性化合物晶体(I),在296(2) K 温度下,牛津X-射线单晶衍射仪上,用经石墨单色器单色化的CuKα射线(λ= 1.54184 Å)以ω-θ 扫描方式收集衍射数据,其特征在于晶体单斜晶系,P21/n; 晶胞参数 : a = 9.4720(4)Å α = 90°; b = 8.1349(2)Å, β =92.545(4);c = 26.5841(10) Å , γ = 90 °。
2.该手性化合物晶体(Ⅰ)的用途,在苯甲醛腈硅化反应及丙酮酸乙酯的亨利反应中中显示了一定的催化效果,其转化率分别达16%及56%。
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