1.本发明属于有机合成技术领域,具体涉及一种芳基乙酸类化合物的合成方法。
背景技术:2.目前工业上合成各种芳基乙酸类化合物仍主要采用芳基乙氰水解法,而芳基乙腈类化合物主要通过苄位卤代物与氰化钠的亲核取代反应制备,对环境和操作人员的健康都可能产生不利影响,合成总共需要两步,不符合绿色化学的理念。此外,合成芳基乙酸类化合物也可通过苄位卤代物或类卤代物在过渡金属催化的条件下与一氧化碳发生插羰反应来合成。但一氧化碳的毒性和不安全性也会限制其实用性。另外,二氧化碳也可作为羰基源来与苄位卤代物或类卤代物合成芳基乙酸类化合物。例如,可通过由苄位卤代物预先制备有机金属化合物,如苄位格式试剂、锌试剂、锂试剂等,再来与二氧化碳反应制备芳基乙酸类化合物。但所用金属有机试剂对水氧敏感,官能团兼容性差,步骤经济性也较差。除了这些方法,化学工作者还开发出了一些其他的二氧化碳参与合成芳基乙酸类化合物的方法,例如过渡金属催化的方法,电化学的方法。但是过渡金属残留和牺牲阳极等问题也都会限制其应用。
3.由于二氧化碳的大量排放,大气中co2浓度持续增高,全球气候变暖日益严重。因此,积极开展二氧化碳的合理利用的研究具有重大意义。通过化学手段将co2作为c1有机合成子制备有机化合物是一种非常重要的途径,将为解决温室效应提供一种新的思路。
4.由此,开发一种可以克服上述缺点的芳基乙酸类化合物的合成方法,并将co2应用到羧酸分子的合成当中是本领域所亟需的。
技术实现要素:5.针对上述现有技术,本发明提供一种芳基乙酸类化合物的合成方法,该方法具有产率高、反应条件温和、反应试剂毒性低、无过渡金属参与、官能团兼容性好、成本低等优点。
6.为了达到上述目的,本发明所采用的技术方案是:提供一种芳基乙酸类化合物的合成方法,包括如下步骤:
7.s1:将苄位卤代物、光敏剂和碱加入反应装置中,将反应装置用co2置换3次,再在co2的气氛下加入溶剂和还原剂;
8.s2:将s1反应装置置于距可见光光源1cm处,在室温下搅拌反应0.1~24h,反应结束先用乙酸乙酯稀释,再用淬灭剂淬灭,然后用乙酸乙酯萃取,之后旋干溶剂,得粗产物;
9.s3:通过快速柱层析纯化s2所得粗产物,得芳基乙酸类化合物。
10.在上述技术方案的基础上,本发明还可以做如下改进。
11.进一步,苄位卤代物的结构如式(i)所示,
[0012][0013]
其中,ar为芳基;r1和r2分别独立的为氢、烷基或芳基,x为cl、br。
[0014]
进一步,光敏剂的用量为反应底物的0.01~10mol%;碱的添加量为反应底物的0.1~10倍当量;还原剂的添加量为反应底物的0.1~10倍当量。
[0015]
进一步,反应装置中co2气压为0.1atm~30atm。
[0016]
进一步,光敏剂为4dpaipn、3dpafipn、4czipn、dpz或ir(ppy)2(dbbpy)
·
pf6。
[0017]
进一步,碱为叔丁醇锂、叔丁醇钠、叔丁醇钾、碳酸锂、碳酸钠、碳酸钾和碳酸铯中的至少一种。
[0018]
进一步,还原剂为tmeda、et3n、dipea或phsih3。
[0019]
进一步,溶剂为dmf、dma或dmso。
[0020]
进一步,淬灭剂为乙酸乙酯和盐酸。
[0021]
进一步,s3中柱层析纯化所用洗脱液为石油醚、乙酸乙酯和冰醋酸的混合物,混合物中石油醚与乙酸乙酯的体积比为10:1~2:1,冰醋酸的质量分数为0.1~0.5%。
[0022]
进一步,可见光光源为30w的蓝色led灯。
[0023]
本发明中,芳基乙酸类化合物的合成反应方程式如下:
[0024][0025]
反应原理如图1所示。在光催化体系下,苄位卤代物首先与还原态的光敏剂发生单电子转移过程,生成苄位自由基。然后该苄位自由基与还原态的光敏剂再次发生单电子还原,生成苄位碳负离子,随后进攻co2,生成羧酸负离子,再经酸化,可得到芳基乙酸类化合物。
[0026]
本发明的有益效果是:本发明由可见光驱动,在无需敏感金属试剂、过渡金属试剂或其它有毒有害试剂的条件下,高效合成芳基乙酸类化合物;本发明方案的反应条件温和,反应底物范围广,官能团兼容性广、可放大至克级规模;本发明所用原料廉价易得,具有良好的工业应用前景。
附图说明
[0027]
图1为本发明芳基乙酸类化合物的合成的原理图。
具体实施方式
[0028]
为了使本发明的目的、技术方案及优点更加清楚明白,以下结合实施例,对本发明进行进一步详细说明。应当理解,此处所描述的具体实施例仅用以解释本发明,并不用于限定本发明,即所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。
[0029]
因此,以下对提供的本发明的实施例的详细描述并非旨在限制要求保护的本发明的范围,而是仅仅表示本发明的选定实施例。基于本发明的实施例,本领域技术人员在没有
做出创造性劳动的前提下所获得的所有其他实施例,都属于本发明保护的范围。
[0030]
需要说明的是,术语“第一”和“第二”等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来,而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下,由语句“包括一个
……”
限定的要素,并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
[0031]
以下结合实施例对本发明的特征和性能作进一步的详细描述。
[0032]
实施例1
[0033]
由苄位氯代物合成芳基乙酸类化合物,合成反应式如式(1)所示。
[0034][0035]
反应包括以下步骤:
[0036]
s1:向加有搅拌子的干燥schlenk管(10ml)中,加入反应底物1(0.2mmol,1.0当量),光敏剂4dpaipn(0.004mmol,2mol%)和碱叔丁醇锂(0.6mmol,3.0当量);
[0037]
s3:将schlenk管置换3次co2;
[0038]
s4:在co2气氛下加入溶剂dmf(2ml)和还原剂tmeda(0.12mmol,0.6当量);
[0039]
s5:将schlenk管置于距30w的蓝色led光源1cm处,在室温(25~30℃)下搅拌反应8h;
[0040]
s6:用2ml乙酸乙酯和2ml 2n盐酸淬灭反应,乙酸乙酯萃取3次后,直接浓缩旋干有机相,得粗产物;
[0041]
s7:粗产物通过快速柱层析纯化得到纯的所需产物,层析柱纯化所用洗脱液为石油醚、乙酸乙酯和冰醋酸的混合物,混合物中石油醚与乙酸乙酯的体积比为10:1~2:1,冰醋酸的质量分数为0.1~0.5%。得到产品如下:
[0042][0043]
实施例2
[0044]
由苄位氯代物合成tta-a8前体,合成反应式如式(2)所示。
[0045][0046]
反应包括以下步骤:
[0047]
s1:向加有搅拌子的干燥schlenk管(10ml)中,加入反应底物1ak(0.2mmol,1.0当量),光敏剂4dpaipn(0.004mmol,2mol%)和碱叔丁醇锂(0.6mmol,3.0当量);
[0048]
s3:将schlenk管置换3次co2;
[0049]
s4:在co2气氛下加入溶剂dmf(2ml)和还原剂tmeda(0.12mmol,0.6当量);
[0050]
s5:将schlenk管置于距30w的蓝色led光源1cm处,在室温(25~30℃)下搅拌反应6h;
[0051]
s6:反应结束后在氮气流下加入3当量碘甲烷,在50~75℃下反应3h。
[0052]
s7:反应结束后用水淬灭,乙酸乙酯萃取3次后,直接浓缩旋干有机相,得粗产物;
[0053]
s8:粗产物通过快速柱层析纯化得到纯的所需产物,层析柱纯化所用洗脱液为石油醚、乙酸乙酯的混合物,混合物中石油醚与乙酸乙酯的体积比为10:1。
[0054]
产物2ak为相应的羧酸tta-a8前体进一步甲酯化的产物,旨在便于分离纯化。
[0055]
实施例3
[0056]
由苄位溴代物合成芳基乙酸类化合物,合成反应式如式(3)所示。
[0057][0058]
反应包括以下步骤:
[0059]
s1:向加有搅拌子的干燥schlenk管(10ml)中,加入反应底物3(0.2mmol,1.0当量),光敏剂4dpaipn(0.002mmol,1mol%)和碱cs2co3(0.4mmol,2.0当量);
[0060]
s3:将schlenk管置换3次co2;
[0061]
s4:在co2气氛下加入溶剂dmf(2ml)和还原剂tmeda(0.12mmol,0.6当量);
[0062]
s5:将schlenk管置于距30w的蓝色led光源1cm处,在室温(25~30℃)下搅拌反应8h;
[0063]
s6:用2ml乙酸乙酯和2ml 2n盐酸淬灭反应,乙酸乙酯萃取3次后,直接浓缩旋干有机相,得粗产物;
[0064]
s7:粗产物通过快速柱层析纯化得到纯的所需产物,层析柱纯化所用洗脱液为石油醚、乙酸乙酯和冰醋酸的混合物,混合物中石油醚与乙酸乙酯的体积比为10:1~2:1,冰醋酸的质量分数为0.1~0.5%。得到产品如下:
[0065][0066]
本发明所合成的芳基乙酸类化合物的结构表征常数如下:
[0067]
2-(4-苯基苯基)乙酸(2a)
[0068][0069]
13
c nmr(101mhz,dmso-d6)δ173.14,140.38,138.95,134.72,130.42,129.36,127.76,127.01,126.98,40.70;
[0070]
lrms(esi-)[m-h]-calculated m/z for[c
14h11
o2]-:211.24,found:210.98.
[0071]
2-(4'-(叔丁基)-[1,1'-二苯基]-4-取代)乙酸(2b)
[0072]
2h),3.57(s,2h),1.28(s,9h);
[0073]
13
c nmr(101mhz,dmso-d6)δ173.16,150.17,138.84,137.53,134.40,130.36,126.79,126.67,126.12,40.71,34.66,31.54;
[0074]
lrms(esi-)[m-h]-calculated m/z for[c
18h19
o2]-:267.14,found:267.01.
[0075]
2-(4'-(三氟甲基)-[1,1'-二苯基]-4-取代)乙酸(2c)
[0076]
2h),7.41
–
7.32(m,2h),3.61(s,2h);
[0077]
13
c nmr(101mhz,dmso-d6)δ173.02,144.36(d,j=1.6hz),137.33,135.88,130.62,128.15(q,j=31.7hz),127.75,127.33,126.17(q,j=3.8hz),124.82(q,j=273.0hz),40.68;
[0078]
19
f nmr(376mhz,dmso-d6)δ-60.93;
[0079]
lrms(esi-)[m-h]-calculated m/z for[c
15h10
f3o2]-:279.06,found:278.89.
[0080]
2-(4-(甲氧基羰基)苯基)乙酸(2d)
[0081]
(m,2h),3.89(s,3h),3.69(s,2h);
[0082]
13
c nmr(101mhz,cdcl3)δ176.93,166.86,138.31,129.91,129.47,129.22,52.18,40.93;
[0083]
lrms(esi-)[m-h]-calculated m/z for[c
10
h9o4]-:193.05,found:192.95.
[0084]
2-(4-(三氟甲基)苯基)乙酸(2e)
[0085]
2h),7.46(d,j=8.0hz,2h),3.67(s,2h);
[0086]
13
c nmr(101mhz,dmso-d6)δ172.58,140.35(d,j=1.3hz),130.78,127.76(q,j=31.8hz),125.44(q,j=3.8hz),124.80(q,j=272.0hz),40.65;
[0087]
19
f nmr(376mhz,dmso-d6):δ-60.89;
[0088]
lrms(esi-)[m-h]-calculated m/z for[c9h6f3o2]-:203.04,found:202.99.
[0089]
2-(4-氰基苯基)乙酸(2f)
[0090]
2h),7.48(d,j=7.9hz,2h),3.72(s,2h);
[0091]
13
c nmr(101mhz,dmso-d6)δ172.34,141.36,132.51,131.09,119.33,109.92,40.84;lrms(esi-)[m-h]-calculated m/z for[c9h6no2]-:160.04,found:160.10.
[0092]
2-[4-(4,4,5,5-四甲基-1,3,2-二氧杂环戊硼烷-2-基)苯基]乙酸(2g)
[0093][0094]
13
c nmr(101mhz,dmso-d6)δ172.85,138.91,134.84,129.37,84.01,41.28,25.09(注:与硼原子相连的碳信号无法扫描出来);
[0095]
lrms(esi-)[m-h]-calculated m/z for[c
14h18
bo4]-:261.13,found:260.96;
[0096]
2-(4-氯苯基)乙酸(2h)
[0097]
2h),7.27
–
7.22(m,2h),3.55(s,2h);
[0098]
13
c nmr(101mhz,dmso-d6)δ172.85,134.53,131.77,131.72,128.56,40.19;
[0099]
lrms(esi-)[m-h]-calculated m/z for[c8h6clo2]-:169.01,171.00,found:169.03,171.03.
[0100]
2-(4-溴苯基)乙酸(2i)
[0101][0102]1h nmr(400mhz,cdcl3)2j:δ7.47
–
7.42(m,2h),7.17
–
7.11(m,2h),3.58(s,2h);苯乙酸:δ7.36
–
7.26(m,0.42h),3.64(s,0.14h);
[0103]
13
c nmr(101mhz,cdcl3)2j:δ177.35,132.14,131.75,131.10,121.46,40.40;苯乙酸:δ129.36,128.65,127.37,41.05(note:2carbon signals of 2-phenylacetic acid were not detected for its low concentration);
[0104]
lrms(esi-)[m-h]-calculated m/z for[c8h6bro2]-:212.96,214.95,found:212.98,214.90.
[0105]
2-(4-甲基苯基)乙酸(2j)
[0106]
4h),3.50(s,2h),2.27(s,3h);
[0107]
13
c nmr(101mhz,dmso-d6)δ173.29,136.00,132.39,129.64,129.22,40.74,21.08;lrms(esi-)[m-h]-calculated m/z for[c9h9o2]-:149.06,found:148.91.
[0108]
2-(4-苯氧基苯基)乙酸(2k)
[0109]
7.20(m,2h),7.14
–
7.07(m,1h),7.04
–
6.92(m,4h),3.62(s,2h);
[0110]
13
c nmr(101mhz,cdcl3)δ177.86,156.97,156.62,130.71,129.76,127.90,123.38,119.01,118.85,40.26;
[0111]
lrms(esi-)[m-h]-calculated m/z for[c
14h11
o3]-:227.07,found:227.05.
[0112]
2-(4-叔丁基苯基)乙酸(2l)
[0113]
2h),7.19
–
7.15(m,2h),3.50(s,2h),1.27(s,9h);
[0114]
13
c nmr(101mhz,dmso-d6)δ172.90,148.87,132.04,129.03,125.01,40.29,34.15,31.19;
[0115]
lrms(esi-)[m-h]-calculated m/z for[c
12h15
o2]-:191.11,found:191.10.
[0116]
2-(4-甲氧基苯基)乙酸(2m)
[0117]
2h),6.87
–
6.79(m,2h),3.69(s,3h),3.44(s,2h);
[0118]
13
c nmr(101mhz,dmso-d6)δ173.45,158.43,130.79,127.37,114.07,55.43,40.19;lrms(esi-)[m-h]-calculated m/z for[c9h9o3]-:165.06,found:165.11.
[0119]
2-(4'-(三氟甲基)-[1,1'-二苯基]-3-取代)乙酸(2n)
[0120]
7.30(dt,j=7.7,1.4hz,1h),3.65(s,2h);
[0121]
13
c nmr(101mhz,dmso-d6)δ173.08,144.48(d,j=1.4hz),138.95,136.42,130.01,129.48,128.65,128.26(q,j=31.9hz),127.88,126.22(q,j=3.8hz),125.76,124.81(q,j=272.4hz),40.95;
[0122]
19
f nmr(376mhz,dmso-d6)δ-60.90;
[0123]
lrms(esi-)[m-h]-calculated m/z for[c
15h10
f3o2]-:279.06,found:279.02.
[0124]
2-(3-三氟甲基苯基)乙酸(2o)
[0125]
4h),3.69(s,2h);
[0126]
13
c nmr(101mhz,dmso-d6)δ172.28,136.53,133.78(d,j=1.4hz),129.20,128.94(q,j=31.3hz),126.09(q,j=3.9hz),124.29(q,j=272.3hz),123.36(q,j=3.9hz),39.96;
[0127]
19
f nmr(376mhz,dmso-d6)δ-61.05;
[0128]
lrms(esi-)[m-h]-calculated m/z for[c9h6f3o2]-:203.03,found:203.04.
[0129]
2-(3-甲基苯基)乙酸(2p)
[0130]
1h),7.06
–
6.94(m,3h),3.47(s,2h),2.24(s,3h);
[0131]
13
c nmr(101mhz,dmso-d6)δ173.19,137.70,135.36,130.40,128.57,127.62,126.84,41.15,21.37;
[0132]
lrms(esi-)[m-h]-calculated m/z for[c9h9o2]-:149.06,found:149.18.
[0133]
2-(3-溴苯基)乙酸(2q)
[0134][0135]1h nmr(400mhz,cdcl3)2q:δ7.46
–
7.37(m,2h),7.22
–
7.15(m,2h),3.60(s,2h);苯乙酸:δ7.35
–
7.25(m,0.34h),3.64(s,0.12h);
[0136]
13
c nmr(101mhz,cdcl3)2q:δ176.97,135.33,132.43,130.52,130.13,128.07,122.56,40.53;苯乙酸:δ129.36,128.65,127.36,41.03(注:苯乙酸副产物由于比例太小,两个碳信号无法找到);
[0137]
lrms(esi-)[m-h]-calculated m/z for[c8h6bro2]-:212.96,214.95,found:212.97,214.94.
[0138]
2-氯苯基乙酸(2r)
[0139]
7.29
–
7.23(m,2h),3.68(s,2h);
[0140]
13
c nmr(101mhz,dmso-d6)δ171.96,134.15,133.76,132.62,129.43,129.17,127.54,39.09;
[0141]
lrms(esi-)[m-h]-calculated m/z for[c9h6f3o2]-:169.01,171.01,found:169.05,171.02.
[0142]
2-(2-(三氟甲基)苯基)乙酸(2s)
[0143]
7.50
–
7.40(m,2h),3.75(s,2h);
[0144]
13
c nmr(101mhz,dmso-d6)δ172.15,133.81,133.73(q,j=1.9hz),132.81,127.91,127.89(q,j=28.8hz),126.09(q,j=5.8hz),124.88(q,j=273.8hz),38.27(d,j=1.7hz);
[0145]
19
f nmr(376mhz,dmso-d6)δ-58.75;
[0146]
lrms(esi-)[m-h]-calculated m/z for[c9h6f3o2]-:203.03,found:202.95.
[0147]
2-(2氰基苯基)乙酸(2t)
[0148]
(td,j=7.7,1.4hz,1h),7.46(d,j=7.8hz,1h),7.41(td,j=7.6,1.2hz,1h),3.85(s,2h);
[0149]
13
c nmr(101mhz,methanol-d4)δ171.23,137.67,131.95,131.56,129.91,126.68,116.37,112.24,38.02;
[0150]
lrms(esi-)[m-h]-calculated m/z for[c9h6no2]-:160.04,found:159.92.
[0151]
1-萘基乙酸(2u)
[0152]
2h),4.04(s,2h);
[0153]
13
c nmr(101mhz,dmso-d6)δ173.21,133.75,132.31,132.10,128.87,128.43,127.82,126.59,126.13,125.96,124.46,38.92;
[0154]
lrms(esi-)[m-h]-calculated m/z for[c
12
h9o2]-:185.06,found:185.05.
[0155]
2-氯-6-氟苯乙酸(2v)
[0156][0157]
13
c nmr(101mhz,dmso-d6)δ170.93,161.43(d,j=247.0hz),135.20(d,j=5.8hz),130.04(d,j=9.7hz),125.57(d,j=3.4hz),121.96(d,j=19.0hz),114.64(d,j=22.6hz),32.20(d,j=3.1hz);
[0158]
19
f nmr(376mhz,dmso-d6)δ-112.64;
[0159]
lrms(esi-)[m-h]-calculated m/z for[c8h5clfo2]-:187.00,188.99,found:187.06,189.06.
[0160]
2,6-二氯苯乙酸(2w)
[0161][0162]
13
c nmr(101mhz,dmso-d6)δ170.69,135.70,132.06,130.00,128.62,36.97;
[0163]
lrms(esi-)[m-h]-calculated m/z for[c8h5cl2o2]-:202.97,204.96,found:203.01,204.95.
[0164]
2-(2-甲基-[1,1'-二苯基]-3-取代)乙酸(2x)
[0165]
7.05(dd,j=6.9,2.2hz,1h),3.63(s,2h),2.07(s,3h);
[0166]
13
c nmr(101mhz,dmso-d6)δ172.66,141.98,141.80,134.64,133.91,129.74,129.16,128.47,128.23,126.87,125.45,39.49,16.53;
[0167]
hrms(esi-)[m-h]-calculated m/z for[c
15h13
o2]-:225.0921,found:225.0924.
[0168]
2-(4-(n,n-二丙胺基磺酰基)苯基)乙酸(2y)
[0169]
4h),1.43(h,j=7.4hz,4h),0.77(t,j=7.4hz,6h);
[0170]
13
c nmr(101mhz,dmso-d6)δ172.49,140.38,138.11,130.82,127.16,50.23,40.65,22.19,11.41;
[0171]
hrms(esi-)[m-cooh]-calculated m/z for[c
13h20
no2s]-:254.1220,found:254.1225.孕烯醇酮羧酸衍生物(2z)
[0172]
j=7.9hz,2h),2.03(s,3h),2.01
–
1.81(m,5h),1.68(m,1h),1.61
–
1.48(m,4h),1.45
–
1.33(m,3h),1.13(m,3h),0.98(m,4h),0.50(s,3h);
[0173]
13
c nmr(101mhz,dmso-d6)δ208.98,172.57,165.41,141.06,139.86,130.24,129.53,128.82,122.59,74.36,62.98,56.43,49.72,43.70,40.93,38.31,38.08,36.93,36.59,31.73,31.68,31.66,27.81,24.45,22.62,21.01,19.43,13.36;
[0174]
hrms(esi-)[m-cooh]-calculated m/z for[c
29h37
o3]-:433.2748,found:433.2746.
[0175]
胆固醇羧酸衍生物(2aa)
[0176]
5.44(d,j=3.8hz,1h),4.88(dtd,j=12.3,8.4,4.5hz,1h),3.72(s,2h),2.48(d,j=8.1hz,2h),2.11
–
0.98(m,29h),0.95(d,j=6.5hz,3h),0.90(dd,j=6.6,1.8hz,6h),0.72(s,3h);
[0177]
13
c nmr(101mhz,cdcl3)δ176.90,165.70,139.57,138.10,129.91,129.89,129.38,122.81,74.63,56.66,56.09,49.99,42.29,40.95,39.70,39.50,38.16,36.99,36.62,36.16,35.80,31.91,31.84,28.24,28.01,27.84,24.28,23.82,22.84,22.57,21.03,19.37,18.71,11.85;
[0178]
hrms(esi-)[m-cooh]-calculated m/z for[c
35h51
o2]-:503.3895,found:503.3891.
[0179]
2,2-二苯基乙酸(2ab)
[0180][0181]
13
c nmr(101mhz,dmso-d6)δ173.85,139.97,128.92,128.83,127.28,56.66;
[0182]
lrms(esi-)[m-cooh]-calculated m/z for[c
13h11
]-:167.09,found:167.26.
[0183]
2,2-二(4-氟苯基)乙酸(2ac)
[0184][0185]
13
c nmr(101mhz,dmso-d6)δ173.75,161.58(d,j=243.3hz),136.13(d,j=3.1hz),130.78(d,j=8.2hz),115.65(d,j=21.3hz),54.83;
[0186]
19
f nmr(376mhz,dmso-d6)δ-115.85;
[0187]
lrms(esi-)[m-h]-calculated m/z for[c
14
h9f2o2]-:247.06,found:246.89.
[0188]
2-(3-氯苯基)-2-苯基乙酸(2ad)
[0189]
129.85,128.84,128.67,128.59,127.79,127.74,126.90,56.58;
[0190]
lrms(esi-)[m-cooh]-calculated m/z for[c
13h10
cl]-:201.05,203.04,found:201.15,203.11.
[0191]
2-(4-氯苯基)-2-苯基乙酸(2ae)
[0192][0193]1h nmr(400mhz,dmso-d6)δ12.84(s,1h),7.38
–
7.25(m,8h),7.24
–
7.19(m,1h),5.07(s,1h);
[0194]
13
c nmrδ173.61,139.68,139.06,132.00,130.86,128.97,128.83,128.76,127.43,55.89;
[0195]
lrms(esi-)[m-cooh]-calculated m/z for[c
13h10
cl]-:201.05,203.04,found:201.21,203.10.
[0196]
2-(4-氰基苯基)丙酸(2af)
[0197]
hz,3h);
[0198]
13
c nmr(101mhz,dmso-d6)δ174.97,147.31,132.81,129.13,119.23,110.10,
45.14,18.56;
[0199]
lrms(esi-)[m-h]-calculated m/z for[c
10
h8no2]-:174.06,found:173.82.
[0200]
2-(4-(甲氧羰基)苯基)丙酸(2ag)
[0201]
7.1hz,1h),1.34(d,j=7.1hz,3h);
[0202]
13
c nmr(101mhz,dmso-d6)δ175.21,166.48,147.15,129.79,128.59,128.35,52.52,45.08,18.70;
[0203]
lrms(esi-)[m-cooh]-calculated m/z for[c
10h11
o2]-:163.08,found:163.12.
[0204]
2-(4-异丁基苯基)丙酸(2ah)
[0205]
2h),1.83(dh,j=13.5,6.8hz,1h),1.49(d,j=7.1hz,3h),0.89(d,j=6.6hz,6h);
[0206]
13
c nmr(101mhz,cdcl3)δ180.85,140.83,136.97,129.37,127.26,45.01,44.97,30.16,22.38,18.09;
[0207]
hrms(esi-)[m-h]-calculated m/z for[c
13h17
o2]-:205.1234,found:205.1243.
[0208]
2-(2-氟-[1,1'-二苯基]-4-取代)丙酸(2ai)
[0209]
1h),1.55(d,j=7.2hz,3h);
[0210]
13
c nmr(101mhz,cdcl3)δ180.17,159.67(d,j=248.4hz),140.92(d,j=7.7hz),135.39(d,j=1.2hz),130.88(d,j=4.0hz),128.94(d,j=3.0hz),128.44,128.13(d,j=13.6hz),127.70,123.67(d,j=3.4hz),115.36(d,j=23.7hz),44.84,17.99;
19
f nmr(376mhz,cdcl3)δ-117.39;
[0211]
hrms(esi-)[m-cooh]-calculated m/z for[c
15h12
fo2]-:199.0929,found:199.0925.
[0212]
2,2-bis(4-methoxyphenyl)-2-phenylacetic acid(2aj)
[0213][0214]
13
c nmr(101mhz,cdcl3)δ179.97,158.53,142.99,134.69,131.59,130.28,127.85,127.15,113.14,66.12,55.33;
[0215]
lrms(esi-)[m-h]-calculated m/z for[c
21h19
o2]-:303.14,found:303.25.
[0216]
2-(4-(3-甲基吡嗪-2-取代)苯基)乙酸甲酯(2ak)
[0217]
3.71(s,2h),2.65(s,3h);
[0218]
13
c nmr(101mhz,cdcl3)δ171.71,153.61,151.77,142.14,141.56,137.44,134.63,129.34,129.17,52.12,40.94,23.21;
[0219]
hrms(esi-)[m+h]
+
calculated m/z for[c
14h15
n2o2]
+
:243.1128,found:243.1125.
[0220]
2-(4'-甲基-[1,1'-二苯基]-4-取代)乙酸(4a)
[0221][0222]
13
c nmr(101mhz,dmso-d6)δ173.17,138.85,137.48,137.03,134.38,130.36,129.95,126.81,126.71,40.71,21.09;
[0223]
lrms(esi-)[m-h]-calculated m/z for[c
15h13
o2]-:225.09,found:225.08.
[0224]
2-(3'-甲氧基-[1,1'-二苯基]-4-取代)乙酸(4b)
[0225][0226]
7.53(m,2h),7.37
–
7.26(m,3h),7.20
–
7.12(m,2h),6.89(ddd,j=8.2,2.6,0.9hz,1h),3.78(s,3h),3.58(s,2h);
[0227]
13
c nmr(101mhz,dmso-d6)δ173.13,160.16,141.90,138.84,134.87,130.40,130.36,127.09,119.33,113.33,112.50,55.52,40.71;
[0228]
lrms(esi-)[m-h]-calculated m/z for[c
15h13
o3]-:241.09,found:241.01.
[0229]
2-(2'-氰基-[1,1'-二苯基]-4-取代)乙酸(4c)
[0230]
4h),7.46
–
7.39(m,2h),3.68(s,2h);
[0231]
13
c nmr(101mhz,dmso-d6)δ173.00,144.75,136.54,136.17,134.31,133.98,130.52,130.26,129.00,128.56,119.07,110.51,40.72;
[0232]
hrms(esi-)[m-cooh]-calculated m/z for[c
14h10
n]-:192.0819,found:192.0820.
[0233]
2-(3,5-二三氟甲基)苯基)乙酸(4d)
[0234][0235]
(s,1h),3.85(s,2h);
[0236]
13
c nmr(101mhz,dmso-d6)δ172.32,139.08,131.11(d,j=4.1hz),130.32(q,j=32.7hz),123.83(q,j=272.6hz),120.75(p,j=3.9hz),39.75;
[0237]
19
f nmr(376mhz,dmso-d6)δ-61.36;
[0238]
lrms(esi-)[m-h]-calculated m/z for[c
10
h5f6o2]-:271.02,found:271.06.
[0239]
2-(4-甲氧基-2-三氟甲基苯基)乙酸(4e)
[0240]
hz,1h),7.22
–
7.08(m,2h),3.78(s,3h),3.66(d,j=1.6hz,2h);
[0241]
13
c nmr(101mhz,dmso-d6)δ172.49,158.47,135.23,128.83(q,j=29.6hz),125.36(q,j=1.8hz),124.57(q,j=274.0hz),118.02,111.62(q,j=5.7hz),55.96,37.42(d,j=2.2hz);
[0242]
19
f nmr(376mhz,dmso-d6)δ-59.00;
[0243]
lrms(esi-)[m-h]-calculated m/z for[c
10
h8f3o3]-:233.04,found:233.06.
[0244]
2-(3-乙氧基-4-乙氧羰基苯基)乙酸(4f)
[0245]
(m,2h),4.32(q,j=7.1hz,2h),4.07(q,j=7.0hz,2h),3.61(s,2h),1.42(t,j=6.9hz,3h),1.34(t,j=7.1hz,3h);
[0246]
13
c nmr(101mhz,cdcl3)δ176.64,166.31,158.60,138.80,131.81,121.07,119.67,114.31,64.60,60.81,41.20,14.64,14.24;
[0247]
hrms(esi-)[m-h]
+
calculated m/z for[c
13h15
o5]-:251.0925,found:251.0929.
[0248]
虽然结合附图对本发明的具体实施方式进行了详细地描述,但不应理解为对本专利的保护范围的限定。在权利要求书所描述的范围内,本领域技术人员不经创造性劳动即可作出的各种修改和变形仍属本专利的保护范围。