具体实施方式
下面通过具体实施例,对本发明的技术方案作进一步的具体说明。
本发明中,若非特指,所采用的原料和设备等均可从市场购得或是本领域常用的。下述实施例中的方法,如无特别说明,均为本领域的常规方法。
总实施方案
一种氘代芳香羰基类化合物的制备方法,以式2所示的芳香羰基衍生物为原料,在惰性气氛保护下,经催化体系作用与氘源试剂发生氘代反应,反应产物经过分离提纯,获得式1所示的芳香羰基衍生物邻位氘代产物;所述催化体系包括钯催化剂、配体和助剂;
所述R1基团选自氢原子,甲基,乙基,正丙基,异丙基,叔丁基,苯基,取代苯基,羟基,氨基,二甲氨基中的一种。所述R2基团选自苯基,取代苯基,1-萘基,2-萘基,2-噻吩基,9-菲基,2-苯并噻吩基,4-咔唑基,3-吡啶基,3-喹啉基中的一种。所述取代苯基的取代基选自氢原子,氟原子,氯原子,溴原子,甲基,乙基,异丙基,叔丁基,异戊基,苯基,硝基,甲磺酰基,氰基,甲氧基,苯氧基,乙二醚,二氟甲二醚,二氟甲氧基,吗啉基,二甲基氨基,二苯基氨基中的一种或多种。
所述氘源试剂选自重水、氘代乙酸、氘代三氟乙酸中的一种或多种。
所述惰性气氛为由氮气或氩气所构成的气体环境。
所述钯催化剂选自醋酸钯、氯化钯、三氟甲磺酸钯、溴化钯中的一种或多种。
所述配体为式3所述的氨基酸,其中R1为氢原子、甲基、乙基、正丙基、异丙基、叔丁基、苯基、苄基、羟基、氨基中的一种;
所述助剂为无机氧化剂、有机醇和有机强酸的组合,其中无机氧化剂为三氟乙酸银、三氟甲磺酸银、碳酸银、三氟甲磺酸铜、三氟乙酸铜、乙酸亚铜、三氟乙酸钾、三氟乙酸钠中的一种;有机醇为六氟异丙醇、三氯乙醇、三氟乙醇中的一种;有机强酸为三氟甲磺酸、三氟乙酸、甲磺酸、KMD酸中的一种。
反应中各物料的摩尔用量比为芳香羰基类化合物:氘源试剂:钯催化剂:配体:无机氧化剂:有机醇:有机强酸=1:10-500:0.01-0.10:0.01-0.30:0.5-1.5:5.0-12.0:0.5-6.0。
具体实施方案
实施例1对叔丁基苯甲醛邻位氘代产物的合成
于15mL干燥的封管中,依次加入叔亮氨酸20mol%(26.2mg),三氟乙酸银1.0eq(220.8mg),醋酸钯6mol%(13.5mg),对叔丁基苯甲醛1mmol,HFIP:TFA=19:1(v/v,1mL),D2O(99.9%,3mL),在氮气气氛中置于120℃下反应72h。反应结束后,依次加入4mL DCM,1mL1N HCl,2mL H2O,在室温下搅拌约1小时。
反应完成后,5mLDCM稀释,抽滤后用3mLDCM洗涤。滤液用水洗涤,DCM萃取,合并的滤液干燥,浓缩的得到粗产物。粗产物进行柱分离,湿法装柱。过柱分离后浓缩,后用油泵抽干得到。1H NMR(399MHz,Chloroform-d)δ9.98(s,1H),7.82(d,J=8.6Hz,0.12H),7.55(s,2H),1.37(s,9H);MS(EI)164.2。
同样条件下,从各取代的芳香羰基衍生物出发,在上述条件下得到式1所示的芳香羰基衍生物氘代产物,其结果如下表所示:
4-methyl benzaldehyde-2,6-d2(4-甲基苯甲醛-2,6-d2)(2-d).1H NMR(399MHz,Chloroform-d)δ9.96(s,1H),7.77(d,J=8.2Hz,0.16H),7.33(s,2H),2.45(s,3H);MS(EI)122.1.
4-ethyl benzaldehyde-2,6-d2(3-d).4-乙基苯甲醛
1H NMR(399MHz,Chloroform-d)δ9.97(s,1H),7.80(d,J=8.3Hz,0.20H),7.36(s,2H),2.75(q,J=7.6Hz,2H),1.29(t,J=7.6Hz,3H);MS(EI)136.1.
4-isopropyl benzaldehyde-2,6-d2(4-d)4-异丙基苯甲醛
1H NMR(399MHz,Chloroform-d)δ9.97(s,1H),7.81(d,J=8.3Hz,0.23H),7.39(s,2H),3.00(hept,J=6.8Hz,1H),1.30(d,J=6.9Hz,6H);MS(EI)150.2.
4-isobutyl benzaldehyde-2,6-d2(5-d).4-异丁基苯甲醛
1H NMR(399MHz,Chloroform-d)δ9.97(s,1H),7.79(d,J=8.3Hz,0.16H),7.30(s,2H),2.57(d,J=7.2Hz,2H),1.93(dp,J=13.7,6.8Hz,1H),0.93(d,J=6.6Hz,6H);MS(EI)164.2.benzaldehyde-2,6-d2(6-d).苯甲醛1H NMR(399MHz,Chloroform-d)δ10.02(s,1H),7.88(dd,J=8.1,1.4Hz,0.24H),7.64(dd,J=7.9,6.9Hz,1H),7.58–7.49(m,2H);MS(EI)108.1.
2-methyl benzaldehyde-6-d1(7-d).2-甲基苯甲醛1H NMR(399MHz,Chloroform-d)δ10.26(s,1H),7.80(dd,J=7.6,1.5Hz,0.55H),7.48(td,J=7.5,1.3Hz,1H),7.40–7.33(m,1H),7.26(d,J=7.5Hz,1H),2.69(s,3H);MS(EI)119.1,120.1,121.1.
2,3-dimethyl benzaldehyde-6-d1(8-d).2,3-二甲基苯甲醛1H NMR(399MHz,Chloroform-d)δ10.31(s,1H),7.68–7.63(m,0.39H),7.38(d,J=7.5Hz,1H),7.29–7.23(m,1H),2.60(s,3H),2.36(s,3H);MS(EI)134.1,135.1.
2,4-dimethyl benzaldehyde-6-d1(9-d).2,4-二甲基苯甲醛1H NMR(399MHz,Chloroform-d)δ10.19(s,1H),7.69(d,J=7.8Hz,0.64H),7.16(dt,J=4.4,1.7Hz,1H),7.07(s,1H),2.65(s,3H),2.40(s,3H);MS(EI)133.1,134.1,135.1.
3-methyl benzaldehyde-2,6-d2(10-d).3-甲基苯甲醛1H NMR(399MHz,Chloroform-d)δ9.98(s,1H),7.70–7.68(s,0.14H),7.67(d,J=2.3Hz,0.03H),7.47–7.40(m,2H),2.45(s,3H);MS(EI)122.1.
3,4-dimethyl benzaldehyde-2,6-d2(11-d)3,4-二甲基苯甲醛1H NMR(399MHz,Chloroform-d)δ9.93(s,1H),7.64(s,0.13H),7.61(d,J=7.7Hz,0.06H),7.29(s,1H),2.36(s,3H),2.35(s,3H);MS(EI)136.1.
[1,1'-biphenyl]-3,5-d2-4-carbaldehyde(12-d).[1,1'-联苯]-3,5-d2-4-甲醛1H NMR(399MHz,Chloroform-d)δ10.06(s,1H),7.96(d,J=8.4Hz,0.36H),7.76(s,2H),7.64(dd,J=8.2,1.3Hz,2H),7.52–7.46(m,2H),7.45–7.40(m,1H);MS(EI)183.1,184.1.
[1,1'-biphenyl]-2',3,6'-d3-2-carbaldehyde(13-d).[1,1'-联苯]-2',3,6'-d32-甲醛1H NMR(399MHz,Chloroform-d)δ9.98(d,J=0.8Hz,1H),8.03(dd,J=7.8,1.5Hz,0.07H),7.65(t,J=7.5Hz,1H),7.53–7.41(m,5H),7.40–7.37(m,0.15H);MS(EI)184.1,185.1.
[1,1'-biphenyl]-2,2',4,6'-d4-3-carbaldehyde(14-d).[1,1'-联苯]-2,2',4,6'-d4-3-甲醛1H NMR(399MHz,Chloroform-d)δ10.09(s,1H),8.11(d,J=1.9Hz,0.80H),7.87(dd,J=7.8,1.8Hz,0.99H),7.69–7.58(m,2.66H),7.48(t,J=7.4Hz,2H),7.44–7.37(m,1H);MS(EI)182.1,183.1.
2-fluorobenzaldehyde-6-d1(15-d).2-氟苯甲醛1H NMR(399MHz,Chloroform-d)δ10.36(s,1H),7.87(td,J=7.4,1.9Hz,0.08H),7.61(dddd,J=8.3,7.3,5.4,0.8Hz,1H),7.30–7.24(m,1H),7.21–7.14(m,1H);MS(EI)125.1.
2-chlorobenzaldehyde-6-d1(16-d).2-氯苯甲醛1H NMR(399MHz,Chloroform-d)δ10.48(s,1H),7.92(dd,J=7.8,1.8Hz,0.28H),7.53(ddd,J=7.8,7.2,0.5Hz,1H),7.45(ddd,J=8.1,1.3,0.5Hz,1H),7.42–7.36(m,1H);MS(EI)140.1,142.1,143.1.
2-bromobenzaldehyde-6-d1(17-d).2-溴苯甲醛1H NMR(399MHz,Chloroform-d)δ10.35(d,J=0.7Hz,1H),7.93–7.88(m,0.45H),7.68–7.62(m,1H),7.48–7.39(m,2H);MS(EI)184.0,185.0,186.0.
4-fluorobenzaldehyde-2,6-d2(19-d).4-氟苯甲醛1H NMR(399MHz,Chloroform-d)δ9.96(s,1H),7.91(dd,J=8.9,5.4Hz,0.98H),7.26–7.17(m,2H);MS(EI)124.1,125.1.
4-chlorobenzaldehyde-2,6-d2(20-d).4-氯苯甲醛1H NMR(399MHz,Chloroform-d)δ9.98(s,1H),7.82(d,J=8.6Hz,1.20H),7.55–7.49(m,2H);MS(EI)140.1,141.1.
4-bromobenzaldehyde-2,6-d2(21-d).4-溴苯甲醛1H NMR(399MHz,Chloroform-d)δ9.97(s,1H),7.75(d,J=8.5Hz,1.35H),7.71–7.66(m,2H);MS(EI)183.9,184.9,185.9.
4-nitrobenzaldehyde-2,6-d2(22-d).4-硝基苯甲醛1H NMR(399MHz,Chloroform-d)δ10.14(s,1H),8.38(d,J=8.5Hz,2H),8.06(d,J=8.9Hz,1.48H);MS(EI)151.1.
4-(methylsμLfonyl)benzaldehyde-2,6-d2(23-d).4-甲基磺酰基苯甲醛1H NMR(399MHz,Chloroform-d)δ10.12(s,1H),8.13(d,J=8.1Hz,2H),8.08(d,J=8.5Hz,1.56H),3.11(s,3H);MS(EI)184.1,185.1.
2-chloro-3-fluorobenzaldehyde-6-d1(27-d).2-氯-3-氟苯甲醛1H NMR(399MHz,Chloroform-d)δ10.46(d,J=0.7Hz,1H),7.75–7.72(m,0.21H),7.43–7.35(m,2H);MS(EI)158.0.
2-methoxy benzaldehyde-6-d1(28-d).2-甲氧基苯甲醛1H NMR(399MHz,Chloroform-d)δ10.45(d,J=0.7Hz,1H),7.82(dd,J=7.6,1.9Hz,0.06H),7.54(dd,J=8.4,7.3Hz,1H),7.02(d,J=7.3Hz,1H),6.98(d,J=8.4Hz,1H),3.93(s,3H);MS(EI)137.1.
4-methoxy benzaldehyde-2,6-d2(29-d).4-甲氧基苯甲醛1H NMR(399MHz,Chloroform-d)δ9.88(s,1H),7.83(d,J=8.9Hz,0.66H),7.00(s,2H),3.90(s,3H);MS(EI)137.1,138.1.
3-methoxy benzaldehyde-2,6-d2(30-d).3-甲氧基苯甲醛1H NMR(399MHz,Chloroform-d)δ9.97(s,1H),7.47–7.41(m,1.04H),7.39(d,J=2.8Hz,0.06H),7.18(d,J=8.2Hz,1H),3.88(s,3H);MS(EI)138.1.
4-phenoxy benzaldehyde-2,6-d2(31-d).4-苯氧基苯甲醛1H NMR(399MHz,Chloroform-d)δ9.92(s,1H),7.84(d,J=9.0Hz,0.50H),7.41(dd,J=8.5,7.4Hz,2H),7.23(tt,J=7.1,1.1Hz,1H),7.09(dd,J=8.6,1.1Hz,2H),7.06(s,2H);MS(EI)199.1,200.1.
4-(difluoromethoxy)benzaldehyde-2,6-d2(32-d).4-二氟甲氧基苯甲醛1H NMR(399MHz,Chloroform-d)δ9.96(s,1H),7.90(d,J=8.8Hz,1.12H),7.27–7.23(m,2H),6.62(t,J=72.6Hz,1H);MS(EI)171.1,172.1,173.1,174.1.
2,3-dihydrobenzo[b][1,4]dioxine-5,7-d2-6-carbaldehyde 2,3-二氢苯并[b][1,4]二恶英-5,7-d2-6-甲醛(33-d).1H NMR(399MHz,Chloroform-d)δ9.81(s,1H),7.40(t,J=4.1Hz,0.10H),6.98(s,1H),4.36–4.32(m,2H),4.32–4.28(m,2H);MS(EI)166.1.
2,2-difluorobenzo[d][1,3]dioxole-4,6-d2-5-carbaldehyde 2,2-二氟苯并[d][1,3]二恶英-4,6-d2-5-甲醛(34-d).1H NMR(399MHz,Chloroform-d)δ9.91(s,1H),7.67(dd,J=8.1,1.3Hz,0.78H),7.61(d,J=1.3Hz,0.61H),7.23(d,J=8.1Hz,1H);MS(EI)185.1,186.1,187.1.
4-morpholino benzaldehyde-2,3,5,6-d4(35-d).4-吗啉基苯甲醛1H NMR(399MHz,Chloroform-d)δ9.78(s,1H),7.76(s,1.73H),6.91(d,J=9.2Hz,0.11H),3.88–3.83(m,4H),3.37–3.32(m,4H);MS(EI)193.2.
4-(dimethylamino)benzaldehyde-2,3,5,6-d4(36-d).4-二甲氨基苯甲醛1H NMR(399MHz,Chloroform-d)δ9.73(s,1H),7.73(s,1.72H),6.70(d,J=9.2Hz,0.11H),3.10(s,6H);MS(EI)150.2,151.2.
4-(bis(phenyl-2,4,6-d3)amino)benzaldehyde-2,3,5,6-d4(37-d).4-(双(苯基-2,4,6-d3)氨基)苯甲醛-2,3,5,6-d4 1H NMR(399MHz,Chloroform-d)δ9.80(s,1H),7.68(s,1.75H),7.34(s,4H),7.18(d,J=8.5Hz,1.17H),7.02(d,J=9.0Hz,0.41H);MS(EI)279.2,280.2,281.2.
2-methoxy-1-naphthaldehyde-8-d1(39-d).2-甲氧基-1-萘甲醛1H NMR(399MHz,Chloroform-d)δ10.89(s,1H),9.27(dq,J=8.7,0.8Hz,0.92H),8.06(d,J=9.1Hz,1H),7.80–7.75(m,1H),7.62(ddd,J=8.6,6.8,1.4Hz,1H),7.42(ddd,J=8.0,6.8,1.1Hz,1H),7.29(d,J=9.1Hz,1H),4.06(s,3H);MS(EI)185.1,186.1,187.1.
2-naphthaldehyde-1,3-d2(41-d).2-萘甲醛1H NMR(399MHz,Chloroform-d)δ10.16(s,1H),8.34(s,0.40H),8.01(dd,J=8.0,0.9Hz,1H),7.96(d,J=8.5Hz,0.10H),7.93(s,1H),7.91(dd,J=7.9,0.7Hz,1H),7.65(ddd,J=8.2,6.9,1.4Hz,1H),7.59(ddd,J=8.1,6.9,1.4Hz,1H);MS(EI)157.1,158.1.
benzo[b]thiophene-3-d1-2-carbaldehyde(42-d)苯并噻吩-3-d1-2-甲醛1H NMR(399MHz,Chloroform-d)δ10.10(d,J=1.0Hz,1H),8.02(d,J=0.8Hz,0.45H),7.97–7.91(m,1H),7.89(dt,J=8.1,1.0Hz,1H),7.50(ddd,J=8.2,7.1,1.3Hz,1H),7.43(ddd,J=8.1,7.1,1.1Hz,1H);MS(EI)162.1,163.1.
thiophene-2,4,5-d3-3-carbaldehyde(43-d).噻吩-2,4,5-d3-3-苯甲醛1H NMR(399MHz,Chloroform-d)δ9.92(s,1H),8.12(dd,J=2.9,1.2Hz,0.37H),7.56–7.53(m,0.89H),7.38(ddd,J=5.1,2.9,0.8Hz,1H);MS(EI)112.1,113.1,114.1.
9-ethyl-9H-carbazole-2,4,6,8-d4-3-carbaldehyde(46-d).9-乙基-9H-咔唑-2,4,6,8-d4-3-脲醛1H NMR(399MHz,Chloroform-d)δ10.08(s,1H),8.60(s,0.17H),8.15(s,1H),8.00(d,J=8.4Hz,0.07H),7.57–7.50(m,1H),7.46(d,J=8.3Hz,1.31H),7.32(t,J=7.5Hz,0.10H),4.41(q,J=7.2Hz,2H),1.48(t,J=7.2Hz,3H);MS(EI)226.2,227.2.
1-(phenyl-2,6-d2)ethan-1-one(47-d).1-(苯基-2,6-d2)乙烷-1-酮1H NMR(399MHz,Chloroform-d)δ7.98–7.94(m,1.61H),7.59–7.54(m,1H),7.50–7.43(m,2H),2.59(p,J=2.2Hz,0.17H);MS(EI)123.2.
10,10-dimethylanthracen-9(10H)-one-1,8-d2(48-d).10,10-二甲基蒽-9-酮-1,8-d2 1H NMR(399MHz,Chloroform-d)1H NMR(399MHz,Chloroform-d)δ8.36(ddd,J=7.8,1.5,0.6Hz,1.21H),7.70(dd,J=8.0,1.4Hz,2H),7.67–7.62(m,2H),7.46–7.41(m,2H),1.76(s,6H);MS(EI)222.1,223.1,224.1。
实施例2邻硝基苯甲醛邻位氘代产物的合成
方法同实施例1,不同之处是将120℃换为150℃,氘代度为40%,产率为78%。
同样条件下,从各取代的芳香羰基化合物出发,从上述条件下得到式1所示的芳香羰基化合物氘代产物,其结果如下表所示:
| 化合物编号 |
氘代度(%) |
产率(%) |
| 18-d |
40 |
78 |
| 24-d |
35 |
25 |
| 25-d |
40 |
48 |
| 26-d |
26 |
74 |
。
2-nitrobenzaldehyde-6-d1(18-d).2-硝基苯甲醛1H NMR(399MHz,Chloroform-d)δ10.41(s,1H),8.11(dd,J=7.9,1.1Hz,1H),7.95(dd,J=7.4,1.7Hz,0.72H),7.82–7.73(m,2H);MS(EI)131.1,132.1.
4-formyl benzonitrile-3,5-d2(24-d).4-甲酰基苯甲腈1H NMR(399MHz,Chloroform-d)δ10.09(s,1H),7.99(d,J=8.4Hz,1.38H),7.88–7.82(m,2H);MS(EI)130.1,131.1,132.1.
4-(trifluoromethyl)benzaldehyde-2,6-d2(25-d).4-三氟甲基苯甲醛1H NMR(399MHz,Chloroform-d)δ10.10(s,1H),8.01(d,J=8.0Hz,1.30H),7.81(dd,J=5.7,2.6Hz,2H);MS(EI)173.1,174.1,175.1.
3-nitrobenzaldehyde-6-d1(26-d).3-硝基苯甲醛1H NMR(399MHz,Chloroform-d)δ10.12(s,1H),8.71(ddd,J=2.2,1.4,0.5Hz,1H),8.49(ddd,J=8.2,2.3,1.1Hz,1H),8.23(dt,J=7.6,1.3Hz,0.76H),7.80–7.73(m,1H);MS(EI)150.1,151.1,152.1。
实施例3 1-萘甲醛邻位氘代产物的合成
方法同实施例1,不同之处是将120℃换为150℃,HFIP:TFA=19:1(v/v,2mL)氘代度为32%,产率为92%。
同样条件下,从联苯类、杂环类、萘环类芳香醛化合物出发,从上述条件下得到化合物1(式1所示的氘代产物),其结果如下表所示:
| 化合物编号 |
氘代度(%) |
产率(%) |
| 38-d |
32 |
92 |
| 40-d |
40 |
83 |
。
1-naphthaldehyde-8-d1(38-d).1-萘甲醛1H NMR(399MHz,Chloroform-d)δ10.40(s,1H),9.25(dd,J=8.5,1.1Hz,0.67H),8.10(dt,J=8.2,1.0Hz,1H),7.99(dd,J=7.0,1.4Hz,1H),7.93(dt,J=8.1,1.0Hz,1H),7.70(ddd,J=8.5,6.9,1.4Hz,1H),7.62(ddd,J=13.7,8.2,7.0Hz,2H);MS(EI)155.1,156.1,157.1.
phenanthrene-8-d1-9-carbaldehyde(40-d).菲-8-d1-9-甲醛1H NMR(399MHz,Chloroform-d)δ10.37(s,1H),9.39–9.34(m,0.60H),8.73–8.69(m,1H),8.69–8.65(m,1H),8.24(s,1H),8.03(dd,J=7.9,1.4Hz,1H),7.81(ddd,J=8.4,7.0,1.4Hz,1H),7.77–7.70(m,2H),7.67(ddd,J=8.0,7.0,1.1Hz,1H);MS(EI)206.1,207.1。
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。