CN103524407A - 一组2-氟-3-吡啶甲酰化合物 - Google Patents

一组2-氟-3-吡啶甲酰化合物 Download PDF

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CN103524407A
CN103524407A CN201310528459.4A CN201310528459A CN103524407A CN 103524407 A CN103524407 A CN 103524407A CN 201310528459 A CN201310528459 A CN 201310528459A CN 103524407 A CN103524407 A CN 103524407A
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孙家隆
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Abstract

本发明提供了一组2-氟-3-吡啶甲酰化合物,该化合物通式为

Description

一组2-氟-3-吡啶甲酰化合物
技术领域
本发明属于农药领域,技术方案涉及一组2-氟-3-吡啶甲酰化合物,具体涉及一组2-氟-3-吡啶甲酰衍生物及其制备方法和以其为活性成分的杀菌剂应用。
背景技术
酰胺类化合物在农用杀菌剂中占有重要地位,如甲霜灵、高效甲霜灵、烯酰吗啉、氟吗啉、啶酰菌胺等。我们对吡啶酰胺类化合物结构进行了深入的研究分析,将氟原子引入吡啶环,以2-氟-3-吡啶甲酰氯为母体,分别与不同的芳香胺反应,合成了系列2-氟-3-吡啶甲酰化合物。新化合物作为杀菌剂生产时比较环保,利于产业化而服务“三农”。
发明内容
本发明的目的是提供一组2-氟-3-吡啶甲酰化合物,结构式如式I所示:
其中,X选自NH、S或O;R基团选自苯基衍生物、萘基衍生物或其他芳香性杂环基衍生物。
具体的,式I中X-R取代基团选自3-甲基苯胺基、4-甲基苯胺基、2,6-二甲基苯胺基、2-硝基苯胺基、4-硝基苯胺基、2-羟基苯胺基、3-羟基苯胺基、4-羟基苯胺基、3-溴苯胺基、2,4-二氯苯胺基、3,5-二氯苯胺基、2-氟苯胺基、3-氟苯胺基、3,4-二氟苯胺基、2-三氟甲基苯胺基、3-三氟甲基苯胺基、1-萘胺基、2-巯基-4,6-二甲基嘧啶基、3-羟基-5-甲基异噁唑基、7-羟基-4-甲基香豆素基、2-甲基-5-氯苯胺基、2-氨基-5-甲基-3,4-噻二唑基、2-氨基-5-乙基-3,4-噻二唑基或2-氨基苯并噻唑基中的任意一种。
再具体的,式I所示化合物为表1中的任意一种。
表1本发明提供的2-氟-3-吡啶甲酰化合物
Figure BSA0000096941790000021
本发明的再一个目的是提供所述化合物的制备方法,如下所示:
反应方程式:
Figure BSA0000096941790000022
包括以下步骤:在-2℃~2℃温度下,将2-氟-3-吡啶甲酰氯的惰性溶剂溶液滴加入RXH和K2CO3的惰性溶剂溶液中,滴加完毕后,升至室温下反应,反应完毕后抽滤、去除反应溶剂,经重结晶纯化后即得所述化合物。
具体的,所述RXH选自3-甲基苯胺、4-甲基苯胺、2,6-二甲基苯胺、2-硝基苯胺、4-硝基苯胺、2-羟基苯胺、3-羟基苯胺、4-羟基苯胺、3-溴苯胺、2,4-二氯苯胺、3,5-二氯苯胺、2-氟苯胺、3-氟苯胺、3,4-二氟苯胺、2-三氟甲基苯胺、3-三氟甲基苯胺、1-萘胺、2-巯基-4,6-二甲基嘧啶、3-羟基-5-甲基异噁唑、7-羟基-4-甲基香豆素、2-甲基-5-氯苯胺、2-氨基-5-甲基-3,4-噻二唑、2-氨基-5-乙基-3,4-噻二唑或2-氨基苯并噻唑中的任意一种。
具体的,所述2-氟-3-吡啶甲酰氯、RXH和K2CO3的摩尔质量比为1:1:1。
具体的,所述惰性溶剂为乙腈、氯仿或甲苯。
本发明的另一个目的是提供所述2-氟-3-吡啶甲酰化合物为农用杀菌剂应用。
本发明的有益效果是:本发明所提供的2-氟-3-吡啶甲酰化合物可用于防治农业病害,部分化合物具有抑制病原菌生长的活性,并可取得很好的效果。
本发明提供的2-氟-3-吡啶甲酰化合物用于防治农业病害是本发明的重要特征之一。
本发明所述新化合物制备过程中产生的“三废”较少,易于处理,作为杀菌剂农药生产时比较环保。
具体实施方式
本发明通过特定制备和生物活性测定实施例具体的说明2-氟-3-吡啶甲酰化合物的制备和生物活性,所述实施例仅用于具体的说明本发明而非限制本发明。
下述实施例中所使用的实验方法如无特殊说明,均为常规方法。
下述实施例中所用的材料、试剂等,如无特殊说明,均可从商业途径得到。
实施例12-氟-3-吡啶甲酰氯的制备
在装有电磁搅拌、温度计和回流管的250mL三口瓶中加入0.05mol2-氟-3-吡啶甲酸、80ml苯,室温滴加0.06mol的氯化亚砜,然后加热至回流,保温反应直至反应液澄清,减压蒸馏出溶剂和未反应的氯化亚砜,冷却至室温,得到白色固体2-氟烟酰氯7.55克,收率为94.67%。
实施例2N-(3-甲基苯基)-2-氟-3-吡啶甲酰胺(Z110615)的制备
在装有温度计和搅拌子的100mL三口瓶中,加入0.01mol的3-甲基苯胺,0.01molK2CO3和30mL甲苯,0~5℃温度下滴加10mL的0.01mol的2-氟烟酰氯的甲苯溶液,控制滴加速度,防止反应液出现急剧升温现象;滴加完毕升至室温下反应,TLC跟踪反应(展开液:乙酸乙酯和石油醚7:3比例的混合溶液),约5小时反应完毕,抽滤,滤液脱溶,制得目标物粗品。甲苯重结晶,熔点149.9~150.7℃,收率90.5%。
实施例3N-(4-甲基苯基)-2-氟-3-吡啶甲酰胺(Z110616)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为4-甲基苯胺。熔点185.9~186.5℃,收率91.1%。
实施例4N-(2,6-二甲基苯基)-2-氟-3-吡啶甲酰胺(Z110826)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为2,6-二甲基苯胺。乙腈重结晶,熔点142.7~143.4℃,收率91.0%。
实施例5N-(2-硝基苯基)-2-氟-3-吡啶甲酰胺(Z110626)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为2-硝基苯胺。乙醇和石油醚(体积比2:1)混合液重结晶,熔点152.7~153.1℃,收率65.1%。
实施例6N-(4-硝基苯基)-2-氟-3-吡啶甲酰胺(Z110707)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为4-硝基苯胺。无水乙醇重结晶,熔点209.3~210.3℃,收率60.6%。
实施例7N-(2-羟基苯基)-2-氟-3-吡啶甲酰胺(Z110628)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为2-羟基苯胺。乙腈重结晶,熔点158.8~158.9℃,收率78.2%。
实施例8N-(3-羟基苯基)-2-氟-3-吡啶甲酰胺(Z111025)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为3-羟基苯胺。正丙醇重结晶,熔点183.6~183.9℃,收率71.1%。
实施例9N-(4-羟基苯基)-2-氟-3-吡啶甲酰胺(Z110627)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为4-羟基苯胺。乙腈重结晶,熔点196.9~197.1℃,收率81.1%。
实施例10N-(3-溴苯基)-2-氟-3-吡啶甲酰胺(Z110830)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为3-溴苯胺。熔点196.9~197.1℃,收率81.1%。
实施例11N-(2,4-二氯苯基)-2-氟-3-吡啶甲酰胺(Z111008)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为2,4-二氯苯胺。熔点170.2~170.4℃,收率85.5%。
实施例12N-(3,5-二氯苯基)-2-氟-3-吡啶甲酰胺(Z110706)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为3,5-二氯苯胺。乙醇重结晶,熔点125.8~127.1℃,收率65.7%。
实施例13N-(2-氟苯基)-2-氟-3-吡啶甲酰胺(Z111006)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为2-氟苯胺。熔点125.8~127.1℃,收率65.7%。
实施例14N-(3-氟苯基)-2-氟-3-吡啶甲酰胺(Z111007)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为3-氟苯胺。熔点83.8~84.2℃,收率82.3%。
实施例15N-(3,5-二氟苯基)-2-氟-3-吡啶甲酰胺(Z110901)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为3,5-二氟苯胺。熔点126.0~127.3℃,收率72.6%。
实施例16N-(2-三氟甲基苯基)-2-氟-3-吡啶甲酰胺(Z110829)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为2-三氟甲基苯胺。乙醇重结晶,熔点161.2~162.1℃,收率77.6%。
实施例17N-(3-三氟甲基苯基)-2-氟-3-吡啶甲酰胺(Z110830a)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为3-三氟甲基苯胺。熔点117.0~117.5℃,收率71.6%。
实施例18N-(1-萘基)-2-氟-3-吡啶甲酰胺(Z110617)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为1-氨基萘。熔点173.6~173.8℃,收率82.1%。
实施例19S-(4,6-二甲基嘧啶基)-2-氟-3-吡啶硫代甲酸酯(Z111118)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为2-巯基-4,6-二甲基嘧啶。熔点137.8-138.3℃,收率44.6%。
实施例202-氟-3-吡啶甲酸(5-甲基异噁唑基)酯(Z120104)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为3-羟基-5-甲基异噁唑。熔点110.3-112.1℃,收率75.0%。
实施例212-氟-3-吡啶甲酸(4-甲基香豆素基)酯(Z110617)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为7-羟基-4-甲基香豆素。熔点197.8-198.2℃,收率75.3%。
实施例22N-(2-甲基-5-氯苯基)-2-氟烟酰胺(Q130502)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为2-甲基-5-氯苯胺。熔点196.1-196.4℃,收率60.1%。
实施例23N-(5-甲基-3,4-噻二唑基)-2-氟烟酰胺(Q120521)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为2-氨基-5-甲基-3,4-噻二唑;乙醇重结晶,目标物熔点前分解,收率77.9%。
实施例24N-(5-乙基-3,4-噻二唑基)-2-氟烟酰胺(Q120523)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为2-氨基-5-乙基-3,4-噻二唑;乙醇重结晶,熔点182.3-182.9℃,收率47.9%。
实施例25N-(苯并噻唑基)-2-氟烟酰胺(Q120528)的制备
制备过程:同实施例2,不同之处有:将反应物3-甲基苯胺替换为2-氨基-苯并噻唑;氯苯重结晶,熔点243.1-246.7℃,收率58.0%。
实施例26实施例2-25所制备化合物的理化参数测定和化学结构鉴定
测定实施例2-25所制备化合物的熔点、1H-NMR和IR,其化学结构式和理化参数见表2、表3和表4。
表2实施例2-25所制备的2-氟-3-吡啶甲酰化合物物理化学性质及收率
Figure BSA0000096941790000051
Figure BSA0000096941790000061
Figure BSA0000096941790000071
表3实施例2-25所制备的2-氟-3-吡啶甲酰化合物核磁共振氢谱数据
Figure BSA0000096941790000081
Figure BSA0000096941790000091
表4实施例2-25所制备的2-氟-3-吡啶甲酰化合物红外光谱数据
编号 红外光谱(特征吸收峰)数据(IR)
Z110615 IR(KBr)v:3228,3074,1651,1581,1440,1133,1026cm-1
Z110616 IR(KBr)v:3245,3116,3050,1652,1602,1395,1142cm-1
Z110826 IR(KBr)v:3216,3033,1648,1577,1528,1465,1441,1146,1059cm-1
Z110626 IR(KBr)v:3323,1689,1582,1494,1337,1146,1063,860cm-1
Z110707 IR(KBr)v:3265,3211,1698,1614,1503,1403,1142,1063cm-1
Z110628 IR(KBr)v:3361,1644,1544,1449,1287,1233,1047cm-1
Z111025 IR(KBr)v:3311,1660,1448,1398,1228,1158,1133,1062cm-1
Z110627 IR(KBr)v:3261,1648,1525,1225,1146,1067cm-1
Z110830 IR(KBr)v:3236,3062,1681,1590,1532,1465,1411,1150,1063,686,650cm-1
Z111008 IR(KBr)v:3241,1660,1586,1519,1474,1378,1150,1096,1067,719cm-1
Z110706 IR(KBr)v:3531,3353,1677,1594,1540,1441,1287,1150,1067,756cm-1
Z111006 IR(KBr)v:3191,3058,1660,1582,1499,1441,1208,1100,1063cm-1
Z111007 IR(KBr)v:3253,3070,1685,1611,1553,1490,1403,1154,1129,1063cm-1
Z110901 IR(KBr)v:3261,3220,3054,1689,1631,1507,1436,1204,1179,1129,1067cm-1
Z110829 IR(KBr)v:3149,1660,1577,1403,1316,1163,1117,1059cm-1
Z110830a IR(KBr)v:3261,3203,1681,1577,1436,1333,1266,1134,1067cm-1
Z110617 IR(KBr)v:3257,3050,1648,1573,1528,1499,1146,1067cm-1
Z111119 IR(KBr)v:3224,3137,2838,1669,1602,1548,1499,1435,1167,1125,1063cm-1
Z120104 IR(KBr)v:3137,3046,1718,16311577cm-1
Z120107 IR(KBr)v:3058,1743,1623,1411cm-1
Q130502 IR(KBr)v:3236,2950,1561,1436,1337,1121,1071,918,781,719cm-1
Q120521 IR(KBr)v:3141,1685,1582,1540,1403,1316,1134cm-1
Q120523 IR(KBr)v:3137,2988,2934,1685,1540,1399,1316cm-1
Q120528 IR(KBr)v:3162,3066,1681,1561,1441,1395,1300,1258cm-1
由表3和表4可见,实施例2-25所制备的2-氟-3-吡啶甲酰化合物的1H-NMR显示与其结构相应的化学位移、H的数目与其结构吻合,IR出现相应的骨架吸收峰。
实施例27实施例2-25所制备的2-氟-3-吡啶甲酰化合物对7种常见代表性病害病原的抑菌活性测定
(1)PDA培养基制备:将200g马铃薯去皮切块,加1000mL蒸馏水,煮沸10-20min。用纱布过滤,补加蒸馏水至1000mL。加入20g葡萄糖和17g琼脂,加热融化,分装,高压蒸汽灭菌2h,备用。
(3)测定方法:采用菌丝生长速率法(一定时间内菌落直径的大小)测定化合物的抑菌活性。在离心管中准确称取5mg供试目标化合物,先用适量丙酮溶解,再加入计算量的含有1%吐温20乳化剂的水溶液,稀释成1000mg/L的药液。取1mL药液加入9mL培养基中摇匀,配制成100mg/L的含药培养基,均匀倒入培养皿。同时添加不含共试目标化合物、含有相同量的丙酮及吐温20乳化剂培养基的培养皿做空白对照。用灭菌的打孔器(直径4mm)在生长良好,无污染,长势均匀菌落边缘打取菌饼,在无菌条件下接入含药培养基中心(每个培养皿接种一个菌饼),盖上皿盖,皿盖朝下,每处理重复3次。将培养基置于25℃恒温培养箱中培养,待对照培养皿中菌落直径扩展到4-5cm后用十字交叉法测量各处理菌饼扩展直径,求平均值,与空白对照比较计算相对抑菌率。
(4)抑菌率的计算:
菌落增长直径(mm)=菌落测量直径(mm)-菌饼直径(mm)
相对抑制率(%)=[对照菌落增长直径(mm)-含药培养基上菌落增长直径(mm)]/对照菌落增长直径(mm)×100
按照上述方法,测定实施例2-25所制备的2-氟-3-吡啶甲酰化合物对七种常见代表性病害病原的抑菌效果,测定结果见表5(表中数据为各化合物在100mg/L时对病原菌生长的抑制百分率)。
其中,嘧菌酯为对照农药。
表5实施例2-25所制备的2-氟-3-吡啶甲酰化合物杀菌活性
Figure BSA0000096941790000111
从表5中数据看出,实施例2-25所制备化合物在100mg/L浓度下,对所选七种病原菌大多数具有不同程度的抑菌活性,其中Z110628对苹果腐烂病菌的抑菌率分别达到100.00%、Z120107对苹果炭疽病菌的抑菌率达到85.07%、Q120528对梨黑斑病菌的抑菌率达到98.03%,抑菌率高于对照农药嘧菌酯。

Claims (10)

1.一组2-氟-3-吡啶甲酰化合物,结构式如式I所示:
Figure FSA0000096941780000011
其中,X选自NH、S或O;R基团选自苯基衍生物、萘基衍生物或其他芳香性杂环基衍生物;式I中X-R取代基团选自3-甲基苯胺基、4-甲基苯胺基、2,6-二甲基苯胺基、2-硝基苯胺基、4-硝基苯胺基、2-羟基苯胺基、3-羟基苯胺基、4-羟基苯胺基、3-溴苯胺基、2,4-二氯苯胺基、3,5-二氯苯胺基、2-氟苯胺基、3-氟苯胺基、3,4-二氟苯胺基、2-三氟甲基苯胺基、3-三氟甲基苯胺基、1-萘胺基、2-巯基-4,6-二甲基嘧啶基、3-羟基-5-甲基异噁唑基、7-羟基-4-甲基香豆素基、2-甲基-5-氯苯胺基、2-氨基-5-甲基-3,4-噻二唑基、2-氨基-5-乙基-3,4-噻二唑基或2-氨基苯并噻唑基中的任意一种。
2.根据权利要求1所述的2-氟-3-吡啶甲酰化合物,其特征在于:具有式I结构,其中所述化合物选自下表中的任意一种。
Figure FSA0000096941780000012
3.权利要求1或2所述化合物的制备方法,包括以下步骤:在-2℃~2℃温度下,将2-氟-3-吡啶甲酰氯的惰性溶剂(乙腈或氯仿或甲苯)溶液滴加入RXH和K2CO3的惰性溶剂(乙腈或氯仿或甲苯)溶液中,滴加完毕后,升至室温下反应,反应完毕后抽滤、去除反应溶剂,经重结晶纯化后即得所述化合物。
4.根据权利要求3所述的制备方法,其特征在于:所述RXH选自3-甲基苯胺、4-甲基苯胺、2,6-二甲基苯胺、2-硝基苯胺、4-硝基苯胺、2-羟基苯胺、3-羟基苯胺、4-羟基苯胺、3-溴苯胺、2,4-二氯苯胺、3,5-二氯苯胺、2-氟苯胺、3-氟苯胺、3,4-二氟苯胺、2-三氟甲基苯胺、3-三氟甲基苯胺、1-萘胺、2-巯基-4,6-二甲基嘧啶、3-羟基-5-甲基异噁唑、7-羟基-4-甲基香豆素、2-甲基-5-氯苯胺、2-氨基-5-甲基-3,4-噻二唑、2-氨基-5-乙基-3,4-噻二唑或2-氨基苯并噻唑中的任意一种。
5.根据权利要求3或4所述的制备方法,其特征在于:所述2-氟-3-吡啶甲酰氯、RXH和K2CO3的摩尔质量比为1:1:1。
6.权利要求1或2所述的2-氟-3-吡啶甲酰化合物在防治农作物农业病害中的应用。
7.权利要求1或2所述的2-氟-3-吡啶甲酰化合物在抑制病原菌生长或杀灭病原菌中的应用。
8.权利要求1或2所述的2-氟-3-吡啶甲酰化合物在制备抑制病原菌生长或杀灭病原菌药物中的应用。
9.一种农用组合物,其包含0.1~99.9重量%的权利要求1和权利要求2中任一项所述的化合物以及农药学上可接受的载体和/或赋形剂。
10.根据权利要求9所述的农用组合物的用途,其特征在于:作为农用杀菌剂中的应用。
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