CN115490675B - 季酮酸衍生物及其制备方法与应用 - Google Patents
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Abstract
本发明属于农药技术领域,且公开了季酮酸衍生物及其制备方法与应用,包括以下步骤:A、季酮酸衍生物的制备,首先操作人员将取代甲胺与芳基苄氯溶于乙腈中,并且加入适量的缚酸剂,然后将反应液加热到40~50℃反应5‑6h进行减压浓缩,浓缩液经过酸化,除杂,碱化,萃取,得N‑(芳基)‑R‑取代甲胺,随后在酸性盐存在条件下与4‑羟基‑2‑氧‑2,5‑二氢‑3‑呋喃甲酸甲酯钠盐反应,浓缩,加水,萃取,干燥,脱溶,柱层析得目标产物季酮酸衍生物。本发明采用季酮酸衍生物的分子结构新颖,并且其化学结构式具有鲜明特征,可以对抗药性强的农业害虫进行杀灭,季酮酸是一种广泛存在于天然产物分子结构中的活性结构,其具有良好的杀虫杀螨活性。
Description
技术领域
本发明属于农药技术领域,具体为季酮酸衍生物及其制备方法与应用。
背景技术
目前,操作人员在对农业害虫进行防治的时候,经常需要使用到杀虫杀螨剂,从而便于对农业害虫进行防治,使其不会对农产品的产量和质量造成影响,而现有技术中的杀虫杀螨剂在实际使用的过程中,因为采用相同的杀虫杀螨物质,作用靶标相对单一,在长期使用的过程中,农业害虫的抗药性会逐渐增强,从而影响到杀虫杀螨剂的有效性,使得杀虫杀螨剂对农业害虫的防治效果变差,进而农业害虫会对农产品的产量和质量造成影响,因此需要对其进行改进。
发明内容
本发明的目的在于提供季酮酸衍生物及其制备方法与应用,以解决上述背景技术中提出的问题。
为了实现上述目的,本发明提供如下技术方案:季酮酸衍生物及其制备方法与应用,包括以下步骤:
A、季酮酸衍生物的制备
首先操作人员将取代甲胺与芳基苄氯溶于乙腈中,并且加入适量的缚酸剂,然后将反应液加热到40~50℃反应5-6h进行减压浓缩,接着可以加入稀酸液和乙酸乙酯进行萃取除去杂质,随后水相加入稀碱液将反应液调节pH至8,用乙酸乙酯对水相进行3次萃取,并合并有机相,添加干燥剂进行干燥后减压蒸去乙酸乙酯即得N-(芳基)-R-取代甲胺,之后将N-(芳基)-R-取代甲胺和4-羟基-2-氧-2,5-二氢-3-呋喃甲酸甲酯钠盐加入乙腈溶液中,并且加入酸性盐进行回流反应3-4h,然后将反应液减压蒸去乙腈并且加入水,之后使用二氯甲烷萃取3次且合并有机相,接着使用饱和食盐水洗涤三次,添加干燥剂干燥后减压蒸去二氯甲烷可以得到粗产物,将粗产物再经过柱层析和洗脱即可得到季酮酸衍生物。
B、季酮酸衍生物的结构
其中R选自环丙基、CHF2中的一种;Ar选自苯环、吡啶环;Y(n)选自H、2-Cl、3-Cl、4-Cl、4-CH3、4-OCH3、4-NO2、4-CN。
C、季酮酸衍生物的应用
季酮酸衍生物具有抑制或杀死害虫的功效,适合应用于农药领域,作为杀虫杀螨剂,用于防治刺吸式农业害虫,如:蚜虫、叶蝉、蓟马等。
优选地,所述缚酸剂使用碳酸钠、碳酸钾、三乙胺或二异丙基乙胺,使用三乙胺的效果最好,缚酸剂的用量为取代甲胺物质的量的1.05~1.1倍。
优选地,所述稀酸液为5%的稀盐酸溶液,稀碱液为10%的氢氧化钠溶液。
优选地,所述N-(芳基)-R-取代甲胺与4-羟基-2-氧-2,5-二氢-3-呋喃甲酸甲酯钠盐的物质的量比为1:1.1~1.2。
优选地,所述酸性盐为硫酸氢钾,用量为N-(芳基)-R-取代甲胺量的2.2~2.5倍,洗涤有机相时饱和食盐水的用量为有机相体积的1.2~1.5倍,有机相干燥剂为无水硫酸钠。
优选地,所述柱层析所用的硅胶粉为200-300目,洗脱剂为乙酸乙酯和石油醚,并且乙酸乙酯和石油醚的体积比为1:2~1:1。
优选地,所述季酮酸的衍生物可以为4-[(6-氯-3-吡啶基甲基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I1)、4-[(苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I2)、4-[(2-氯苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I3)、4-[(3-氯苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I4)、4-[(4-氯苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I5)、4-[(4-甲基苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I6)、4-[(4-甲氧基苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I7)、4-[(4-氰基苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I8)、4-[(4-硝基苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I9)、4-[(苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I10)、4-[(2-氯苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I11)、4-[(3-氯苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I12)、4-[(4-氯苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I13)、4-[(4-甲基苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I14)、4-[(4-甲氧基苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I15)、4-[(4-氰基苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I16)、4-[(4-硝基苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I17)。
优选地,所述4-[(4-氯苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I5)的制备中,需要将N-(4-氯苄基)-1-环丙基乙胺、硫酸氢钾和4-羟基-2-氧-2,5-二氢-3-呋喃甲酸甲酯钠盐加入乙腈溶液中。
优选地,所述4-[(4-硝基苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I9)的制备中,需要将N-(4-硝基苄基)-1-环丙基乙胺、硫酸氢钾和4-羟基-2-氧-2,5-二氢-3-呋喃甲酸甲酯钠盐加入乙腈溶液中,所述4-[(4-氯苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I13)的制备中,需要将N-(4-氯苄基)-2,2-二氟乙基-氨基、硫酸氢钾和4-羟基-2-氧-2,5-二氢-3-呋喃甲酸甲酯钠盐加入乙腈溶液中。
优选地,所述化合物I1、I2、I5、I6、I10、I12在测试浓度100μg/mL下,对蚕豆蚜的致死活性高于商品化药剂乐果,化合物I3、I7、I8、I11、I15在测试浓度100μg/mL下,对蚕豆蚜的致死活性与乐果相当,化合物I1、I2在测试浓度100μg/mL下,对蚕豆蚜的致死活性高于商品化药剂抗蚜威,化合物I1、I2、I3、I5、I6、I7、I8、I10、I11、I12、I15在测试浓度100μg/mL下,对棉蚜致死活性高于乐果,化合物I1、I2在测试浓度100μg/mL下,对棉蚜致死活性高于抗蚜威。
本发明的有益效果如下:
本发明采用季酮酸衍生物的分子结构新颖,并且其化学结构式具有鲜明特征,可以对抗药性强的农业害虫进行杀灭,季酮酸是一种广泛存在于天然产物分子结构中的活性结构,其具有良好的杀虫杀螨活性,因此季酮酸类衍生物具有明显的抑制或杀死农业害虫的活性和防治农作物虫害的作用,可以起到良好的防治农业害虫效果,同时本发明采用的制备方法简便,原料易得,反应条件易控,从而可以提高产率。
附图说明
图1为本发明化学反应过程示意图;
图2为本发明季酮酸衍生物结构通式示意图;
图3为本发明季酮酸衍生物杀虫活性对比示意图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,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。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动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。
如图1至图3所示,本发明实施例提供了季酮酸衍生物及其制备方法与应用,包括以下步骤:
A、季酮酸衍生物的制备
首先操作人员将取代甲胺与芳基苄氯溶于乙腈中,并且加入适量的缚酸剂,然后将反应液加热到40~50℃反应5-6h进行减压浓缩,接着可以加入稀酸液和乙酸乙酯进行萃取除去杂质,随后水相加入稀碱液将反应液调节pH至8,用乙酸乙酯对水相进行3次萃取,并合并有机相,添加干燥剂进行干燥后减压蒸去乙酸乙酯即得N-(芳基)-R-取代甲胺,之后将N-(芳基)-R-取代甲胺和4-羟基-2-氧-2,5-二氢-3-呋喃甲酸甲酯钠盐加入乙腈溶液中,并且加入酸性盐进行回流反应3-4h,然后将反应液减压蒸去乙腈并且加入水,之后使用二氯甲烷萃取3次且合并有机相,接着使用饱和食盐水洗涤三次,添加干燥剂干燥后减压蒸去二氯甲烷可以得到粗产物,将粗产物再经过柱层析和洗脱即可得到季酮酸衍生物。
B、季酮酸衍生物的结构
其中R选自环丙基、CHF2中的一种;Ar选自苯环、吡啶环;Y(n)选自H、2-Cl、3-Cl、4-Cl、4-CH3、4-OCH3、4-NO2、4-CN。
C、季酮酸衍生物的应用
季酮酸衍生物具有抑制或杀死害虫的功效,适合应用于农药领域,作为杀虫杀螨剂,用于防治刺吸式农业害虫,如:蚜虫、叶蝉、蓟马等。
其中,缚酸剂使用碳酸钠、碳酸钾、三乙胺或二异丙基乙胺,使用三乙胺的效果最好,缚酸剂的用量为取代甲胺物质的量的1.05~1.1倍。
其中,稀酸液为5%的稀盐酸溶液,稀碱液为10%的氢氧化钠溶液。
其中,N-(芳基)-R-取代甲胺与4-羟基-2-氧-2,5-二氢-3-呋喃甲酸甲酯钠盐的物质的量比为1:1.1~1.2。
其中,酸性盐为硫酸氢钾,用量为N-(芳基)-R-取代甲胺量的2.2~2.5倍,洗涤有机相时饱和食盐水的用量为有机相体积的1.2~1.5倍,有机相干燥剂为无水硫酸钠。
其中,柱层析所用的硅胶粉为200-300目,洗脱剂为乙酸乙酯和石油醚,并且乙酸乙酯和石油醚的体积比为1:2~1:1。
其中,季酮酸的衍生物可以为4-[(6-氯-3-吡啶基甲基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I1)、4-[(苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I2)、4-[(2-氯苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I3)、4-[(3-氯苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I4)、4-[(4-氯苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I5)、4-[(4-甲基苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I6)、4-[(4-甲氧基苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I7)、4-[(4-氰基苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I8)、4-[(4-硝基苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I9)、4-[(苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I10)、4-[(2-氯苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I11)、4-[(3-氯苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I12)、4-[(4-氯苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I13)、4-[(4-甲基苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I14)、4-[(4-甲氧基苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I15)、4-[(4-氰基苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I16)、4-[(4-硝基苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I17)。
[(6-氯-3-吡啶基甲基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I1):
浅黄色固体,收率75.2%;1H NMR(400MHz,CDCl3)δ:8.28(s,1H),7.54(d,J=7.8Hz,1H),7.35(d,J=8.1Hz,1H),4.80(s,2H),4.71(s,1H),4.51(s,2H),3.07(d,J=6.7Hz,2H),0.94(d,J=11.9Hz,1H),0.61(q,J=5.3Hz,2H),0.21–0.15(m,2H).13C NMR(101MHz,CDCl3)δ:174.87,168.22,151.27,148.25,137.29,130.44,124.66,83.11,67.05,55.24,4.07.
4-[(苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I2):
浅黄色固体,收率71.3%;1H NMR(400MHz,CDCl3)δ:7.36(t,J=7.2Hz,2H),7.31(d,J=7.0Hz,1H),7.18(d,J=7.3Hz,2H),4.78(s,2H),4.74(s,1H),4.49(s,2H),3.07(d,J=6.6Hz,2H),0.99(s,1H),0.63–0.52(m,2H),0.17–0.12(m,2H).13C NMR(101MHz,CDCl3)δ:175.51,168.72,135.54,129.05,127.98,126.64,82.01,67.16,53.41,3.86.
4-[(2-氯苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I3):
灰白色固体,收率73.4%;1H NMR(400MHz,CDCl3)δ:7.40(dd,J=8.3,4.7Hz,1H),7.27(t,J=4.5Hz,2H),7.20–7.09(m,1H),4.79(s,2H),4.72(s,1H),4.56(s,2H),3.10(d,J=6.7Hz,2H),0.98(t,J=16.4Hz,1H),0.58(q,J=5.4Hz,2H),0.18(q,J=5.1Hz,2H).13CNMR(101MHz,CDCl3)δ:175.50,168.69,132.97,130.09,129.22,127.42,127.31,82.51,67.10,55.53,51.52,3.85.
4-[(3-氯苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I4):
浅黄色液体,收率74.5%;1H NMR(400MHz,CDCl3)δ:7.29(t,J=5.9Hz,2H),7.17(s,1H),7.08(d,J=5.9Hz,1H),4.79(s,2H),4.71(d,J=14.5Hz,1H),4.47(s,2H),3.08(d,J=6.7Hz,2H),0.98(s,1H),0.60(q,J=5.4Hz,2H),0.18(q,J=5.2Hz,2H).13C NMR(101MHz,CDCl3)δ:175.45,168.59,137.73,135.05,130.38,128.22,126.68,124.73,82.52,67.15,55.26,53.08,9.06,3.94.
4-[(4-氯苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I5):
浅黄色固体,收率80.2%;1H NMR(400MHz,CDCl3)δ:7.33(d,J=8.3Hz,2H),7.14(d,J=8.1Hz,2H),4.78(s,2H),4.71(s,1H),4.47(s,2H),3.06(d,J=6.7Hz,2H),1.05–0.83(m,1H),0.59(q,J=5.4Hz,2H),0.21–0.14(m,2H).13C NMR(101MHz,CDCl3)δ:173.68,166.82,132.18,131.91,129.75,127.32,126.15,80.37,65.31,53.27,51.10,7.16,2.04.
4-[(4-甲基苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I6):
浅黄色液体,收率70.4%;1H NMR(400MHz,CDCl3)δ:7.14(t,J=14.2Hz,2H),7.06(d,J=7.7Hz,2H),4.77(s,2H),4.73(s,1H),4.44(s,2H),3.05(d,J=6.5Hz,2H),2.34(s,3H),1.05–0.91(m,1H),0.61–0.52(m,2H),0.20–0.13(m,2H).13C NMR(101MHz,CDCl3)δ:175.62,168.75,137.79,132.41,129.70,126.68,81.82,67.20,54.96,53.08,21.08,8.78,3.85.
4-[(4-甲氧基苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I7):
浅黄色液体,收率72.1%;1H NMR(400MHz,CDCl3)δ:7.11(d,J=8.2Hz,2H),6.88(d,J=8.3Hz,2H),4.79(s,2H),4.74(s,1H),4.42(s,2H),3.81(s,3H),3.04(d,J=6.4Hz,2H),1.05–0.93(m,1H),0.62–0.54(m,2H),0.20–0.13(m,2H).13C NMR(101MHz,CDCl3)δ:174.13,167.02,157.49,126.20,125.35,112.55,87.33,79.79,66.58,65.46,51.59,1.98.
4-[(4-氰基苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I8):
白色固体,收率67.3%;1H NMR(400MHz,CDCl3)δ:7.65(t,J=10.8Hz,2H),7.35(d,J=8.0Hz,2H),4.80(s,2H),4.67(s,1H),4.58(s,2H),3.10(d,J=6.8Hz,2H),1.03–0.91(m,1H),0.59(q,J=5.4Hz,2H),0.21–0.16(m,2H).13C NMR(101MHz,CDCl3)δ:173.18,166.59,139.44,130.91,125.39,116.48,109.94,80.95,65.17,53.70,51.63,7.35,2.09.
4-[(4-硝基苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I9):
黄色固体,收率71.6%;1H NMR(400MHz,CDCl3)δ:8.22(d,J=8.5Hz,2H),7.40(d,J=8.4Hz,2H),4.81(s,2H),4.69(s,1H),4.62(s,2H),3.12(d,J=6.8Hz,2H),1.04–0.91(m,1H),0.61(q,J=5.4Hz,2H),0.22–0.16(m,2H).13C NMR(101MHz,CDCl3)δ:174.95,168.36,147.62,143.28,127.37,124.26,83.11,67.04,55.67,53.36,9.31,4.03.
4-[(苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I10):
浅黄色液体,收率73.1%;1H NMR(400MHz,CDCl3)δ:7.46–7.30(m,3H),7.19(d,J=7.0Hz,2H),5.89(t,J=54.9Hz,1H),4.83(d,J=10.1Hz,1H),4.80(s,2H),4.48(s,2H),3.52(td,J=14.4,3.6Hz,2H).19F NMR(376MHz,CDCl3)δ:-120.71.13C NMR(101MHz,CDCl3)δ:172.78,167.01,132.60,127.45,126.65,125.13,111.50(t,J=244.2Hz),82.67,65.32,53.55,50.19.
4-[(2-氯苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I11):
浅黄色固体,收率71.4%;1H NMR(400MHz,CDCl3)δ:7.44(dd,J=5.8,3.4Hz,1H),7.35–7.29(m,2H),7.21–7.15(m,1H),5.92(t,J=56.0Hz,1H),4.82(s,3H),4.56(s,2H),3.53(td,J=14.4,3.6Hz,2H).19F NMR(376MHz,CDCl3)δ:-120.72,-121.57.13C NMR(101MHz,CDCl3)δ:174.49,168.61,133.42,131.70,130.36,129.88,128.35,127.56,113.26(t,J=244.3Hz),67.10.
4-[(3-氯苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I12):
浅黄色固体,收率75.2%;1H NMR(400MHz,CDCl3)δ:7.38–7.29(m,2H),7.17(s,1H),7.08(d,J=5.0Hz,1H),6.12–5.76(m,1H),4.83(s,1H),4.80(s,2H),4.47(s,2H),3.54(td,J=14.6,3.5Hz,2H),2.00(d,J=2.2Hz,1H).19F NMR(376MHz,CDCl3)δ:-120.87,-121.78.13C NMR(101MHz,CDCl3)δ:172.64,166.81,134.81,133.37,128.75,126.81,125.11,123.17,111.49(t,J=244.3Hz),83.16,65.28,53.00,50.23.
4-[(4-氯苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I13):
白色固体,收率82.5%;1H NMR(400MHz,CDCl3)δ:7.37(d,J=8.4Hz,2H),7.14(d,J=8.3Hz,2H),5.91(t,J=56.0Hz,1H),4.83(d,J=7.5Hz,1H),4.80(s,2H),4.46(s,2H),3.50(td,J=14.5,3.5Hz,2H).19F NMR(376MHz,CDCl3)δ:-120.73.13C NMR(101MHz,CDCl3)δ:174.39,168.56,134.48,132.93,129.53,128.38,113.26(t,J=244.3Hz),85.06,67.12,54.87,52.01.
4-[(4-甲基苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I14):
白色固体,收率72.2%;1H NMR(400MHz,CDCl3)δ:7.19(d,J=7.8Hz,2H),7.07(d,J=7.8Hz,2H),5.86(t,J=55.0Hz,1H),4.85(s,1H),4.80(s,2H),4.42(s,2H),3.49(td,J=14.3,3.6Hz,2H),2.36(s,3H).19F NMR(376MHz,CDCl3)δ:-120.61.13C NMR(101MHz,CDCl3)δ:174.64,168.76,138.51,131.29,129.99,127.09,113.29(t,J=244.3Hz),84.50,67.19,55.05,51.86,21.11.
4-[(4-甲氧基苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I15):
白色固体,收率70.7%;1H NMR(400MHz,CDCl3)δ:7.12(d,J=8.4Hz,2H),6.91(d,J=8.5Hz,2H),5.86(t,J=52.0Hz,1H),4.83(d,J=6.8Hz,1H),4.81(s,2H),4.40(s,2H),3.81(s,3H),3.48(td,J=14.4,3.5Hz,2H).19F NMR(376MHz,CDCl3)δ:-120.61.13C NMR(101MHz,CDCl3)δ:172.97,167.06,157.90,126.80,124.37,112.82,111.56(t,J=245.4Hz),82.39,65.40,53.52,52.94,49.69.
4-[(4-氰基苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I16):
浅黄色固体,收率80.6%;1H NMR(400MHz,CDCl3)δ:7.69(d,J=8.1Hz,2H),7.34(d,J=8.1Hz,2H),5.97(tt,J=54.6,3.1Hz,1H),4.81(s,3H),4.58(s,2H),3.56(td,J=14.7,3.2Hz,2H).19F NMR(376MHz,CDCl3)δ:-121.00.13C NMR(101MHz,CDCl3)δ:174.18,168.46,140.00,133.04,127.46,118.19,113.27(t,J=245.4Hz),112.41,85.68,67.08,55.25,52.42.
4-[(4-硝基苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I17):
灰白色固体,收率84.5%;1H NMR(400MHz,CDCl3)δ:8.22(d,J=8.6Hz,2H),7.41(d,J=8.6Hz,2H),5.99(tt,J=54.6,3.1Hz,1H),4.83(s,2H),4.78(s,1H),4.64(s,2H),3.60(tt,J=19.1,9.6Hz,2H).19F NMR(376MHz,CDCl3)δ:-121.17.13C NMR(101MHz,CDCl3)δ:172.45,166.78,145.92,140.25,125.75,122.52,111.52(t,J=244.0Hz),83.77,65.28,51.65,50.62。
其中,4-[(4-氯苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I5)的制备中,需要将N-(4-氯苄基)-1-环丙基乙胺、硫酸氢钾和4-羟基-2-氧-2,5-二氢-3-呋喃甲酸甲酯钠盐加入乙腈溶液中。
其中,4-[(4-硝基苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮(I9)的制备中,需要将N-(4-硝基苄基)-1-环丙基乙胺、硫酸氢钾和4-羟基-2-氧-2,5-二氢-3-呋喃甲酸甲酯钠盐加入乙腈溶液中,4-[(4-氯苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮(I13)的制备中,需要将N-(4-氯苄基)-2,2-二氟乙基-氨基、硫酸氢钾和4-羟基-2-氧-2,5-二氢-3-呋喃甲酸甲酯钠盐加入乙腈溶液中。
其中,化合物I1、I2、I5、I6、I10、I12在测试浓度100μg/mL下,对蚕豆蚜的致死活性高于商品化药剂乐果,化合物I3、I7、I8、I11、I15在测试浓度100μg/mL下,对蚕豆蚜的致死活性与乐果相当,化合物I1、I2在测试浓度100μg/mL下,对蚕豆蚜的致死活性高于商品化药剂抗蚜威,化合物I1、I2、I3、I5、I6、I7、I8、I10、I11、I12、I15在测试浓度100μg/mL下,对棉蚜致死活性高于乐果,化合物I1、I2在测试浓度100μg/mL下,对棉蚜致死活性高于抗蚜威。
需要说明的是,在本文中,诸如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。
尽管已经示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本发明的范围由所附权利要求及其等同物限定。
Claims (1)
1.季酮酸衍生物在防治刺吸式农业害虫中的应用,其特征在于,所述季酮酸衍生物包括I1、I2、I3、I5、I6、I7、I8、I10、I11、I12、I15;所述I1为[(6-氯-3-吡啶基甲基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮;所述I2为4-[(苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮;所述I3为4-[(2-氯苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮;所述I5为4-[(4-氯苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮;所述I6为4-[(4-甲基苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮;所述I7为4-[(4-甲氧基苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮;所述I8为4-[(4-氰基苄基)-(环丙基甲基)-氨基]-呋喃-2(5H)-酮;所述I10为4-[(苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮;所述I11为4-[(2-氯苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮;所述I12为4-[(3-氯苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮;所述I15为4-[(4-甲氧基苄基)-(2,2-二氟乙基)-氨基]-呋喃-2(5H)-酮;
所述刺吸式农业害虫为蚕豆蚜或棉蚜。
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