CN112390725A - 一种酰胺类化合物的制备方法 - Google Patents

一种酰胺类化合物的制备方法 Download PDF

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CN112390725A
CN112390725A CN201910756573.XA CN201910756573A CN112390725A CN 112390725 A CN112390725 A CN 112390725A CN 201910756573 A CN201910756573 A CN 201910756573A CN 112390725 A CN112390725 A CN 112390725A
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王刚
王徵
连伟祥
郝泽生
金守征
关云飞
杨辉斌
李斌
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Shenyang Sinochem Agrochemicals R&D Co Ltd
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Abstract

一种制备如通式(I)所示的苯甲酰胺类化合物的方法,涉及一种羧酸肟酯类化合物作为制备杀菌剂的应用,反应式如下:

Description

一种酰胺类化合物的制备方法
技术领域
本发明属于有机合成领域,具体涉及一种酰胺类化合物的制备方法。
背景技术
酰胺类化合物具有一定杀菌活性,CN104649973A中公开了如下通式所示化合物对水稻纹枯病具有很好的杀菌活性。
Figure BDA0002168926680000011
CN104649973A中同时公开了两种酰胺类化合物的制备方法:将3-二氟甲基吡唑酰氯类化合物与取代苯胺在碱性条件下进行反应得到目标产物;将羟基苯甲酰胺类化合物和溴戊烷在碱性条件下反应得到目标产物。但是该两种方法存在反应原料价格昂贵,反应三废多且处理困难,并且收率低等关键工艺问题。一直以来,技术人员致力于不断研究开发新的、更为先进合理、更加环保的制备方法,以期获得质量更优、价格更低的高效、安全的杀菌剂。
发明内容
本发明的目的之一是提供一种成本更为低廉、更加环保地制备酰胺类化合物的新方法。
为实现上述目的,本发明采用技术方案为:
一种酰胺类化合物(通式I所示)的制备方法,酰卤(II)与取代羧酸肟酯(III)在适宜溶剂中,进行缩合反应,得如通式I所示的酰胺类化合物;反应式如下:
Figure BDA0002168926680000012
式中:
R1选自苯环、具有1-3个杂原子的5或6元杂环或苯并具有1-3个杂原子的5或6元的杂环,其中,苯环或杂环上的氢可被一个或多个相同或不同的R5取代;
R2选自H或C1-C12的烷基;
R3选自C1-C12的烷基、C1-C6的卤代烷基、C3-C6的环烷基、C3-C6的环烷基C1-C6烷基、C3-C6的卤代环烷基或C3-C6的环烷基C3-C6的环烷基;
R4选自C1-C6的烷基、C1-C6的卤代烷基、C3-C6的环烷基、C3-C6的环烷基C1-C6烷基、C3-C6的卤代环烷基、C1-C6的烷氧基C1-C6的烷基、C1-C6的卤代烷氧基C1-C6的烷基、C1-C6的烷氧基、C1-C6的卤代烷氧基、C3-C6的环烷氧基、C3-C6的卤代环烷氧基、C3-C6的环烷基C1-C6的烷氧基、苯环、具有1-3个杂原子的5或6元杂环或苯并具有1-3个杂原子的5或6元杂环,其中,苯环或杂环上的氢可被一个或多个相同或不同的R5取代;
R5选自卤素、硝基、氰基、C1-C6的烷基、C1-C6的卤代烷基、C3-C6的环烷基、C3-C6的卤代环烷基、C1-C6的环烷基C1-C6的烷基、C1-C6的烷氧基C1-C6的烷基、C1-C6的卤代烷氧基C1-C6的烷基、C1-C6的烷氧基、C1-C6的卤代烷氧基、C3-C6的环烷氧基、C3-C6的卤代环烷氧基或C3-C6的环烷基C1-C6的烷氧基;
L代表离去基团。
进一步的说,
通式(II)所示的酰卤化合物与取代羧酸肟酯(III)加料摩尔比为1:0.8-1.5,于适宜的溶剂中、温度为-10℃至适宜溶剂沸点范围内,进行缩合反应0.5-8个小时,制得通式I所示的酰胺类化合物。(溶剂加入量)
3.按照权利要求1或2所述的制备方法,其特征在于:所述的溶剂选自二氯甲烷、氯仿、四氯化碳、己烷、苯、甲苯、乙酸乙酯、乙腈、四氢呋喃、二氧六环、丙酮、丁酮、N,N-二甲基甲酰胺或二甲基亚砜。
再进一步的说,
通式(II)所示的酰卤化合物与取代羧酸肟酯(III)加料摩尔比为1:0.8-1.5,于适宜的溶剂中、温度为-10℃至适宜溶剂沸点范围内、压力为-0.1MPa~-0.01MPa压力下,进行缩合反应0.5-8个小时,制得通式I所示的酰胺类化合物。
更进一步的说
通式(II)所示的酰卤化合物与取代羧酸肟酯(III)加料摩尔比为1:0.8-1.5,于适宜的溶剂中、温度为-10℃至适宜溶剂沸点范围内、压力为-0.1MPa~-0.01MPa压力下,加入适宜的酸,进行缩合反应0.5-8个小时,制得通式I所示的酰胺类化合物。
所述的酸选自盐酸、硫酸、甲磺酸或对甲苯磺酸。
通式(II)所示的酰卤化合物与取代羧酸肟酯(III)加料摩尔比为1:0.9-1.2,在无缚酸剂存在下、于适宜的溶剂中、温度为20℃至沸点范围内、压力为-0.05MPa~-0.01MPa压力下,加入适宜的酸,进行缩合反应0.5-4个小时,制得酰胺类化合物;其中所述的溶剂选自甲苯或乙腈;所述的的酸选自盐酸、硫酸或对甲磺酸,所述的酸与取代羧酸肟酯(III)加料摩尔比为0.01-0.5:1。
一种用于制备如通式I所示酰胺类化合物的羧酸肟酯类化合物,羧酸肟酯类化合物如通式III所示:
Figure BDA0002168926680000031
式中:
R2选自H或C1-C12的烷基;
R3选自C1-C12的烷基、C1-C6的卤代烷基、C3-C6的环烷基、C3-C6的环烷基C1-C6烷基、C3-C6的卤代环烷基或C3-C6的环烷基C3-C6的环烷基;
R4选自C1-C6的烷基、C1-C6的卤代烷基、C3-C6的环烷基、C3-C6的环烷基C1-C6烷基、C3-C6的卤代环烷基、C1-C6的烷氧基C1-C6的烷基、C1-C6的卤代烷氧基C1-C6的烷基、C1-C6的烷氧基、C1-C6的卤代烷氧基、C3-C6的环烷氧基、C3-C6的卤代环烷氧基、C3-C6的环烷基C1-C6的烷氧基、苯环、具有1-3个杂原子的5或6元杂环或苯并具有1-3个杂原子的5或6元杂环,其中,苯环或杂环上的氢可被一个或多个相同或不同的R5取代;
R5选自卤素、硝基、氰基、C1-C6的烷基、C1-C6的卤代烷基、C3-C6的环烷基、C3-C6的卤代环烷基、C1-C6的环烷基C1-C6的烷基、C1-C6的烷氧基C1-C6的烷基、C1-C6的卤代烷氧基C1-C6的烷基、C1-C6的烷氧基、C1-C6的卤代烷氧基、C3-C6的环烷氧基、C3-C6的卤代环烷氧基或C3-C6的环烷基C1-C6的烷氧基。
进一步的说,式中:
R2选自H或C1-C6的烷基;
R3选自C1-C8的烷基;
R4选自苯环、具有1-3个杂原子的5或6元杂环、苯并具有1-3个杂原子的5或6元杂环,其中,苯环或杂环上的氢可被一个或多个相同或不同的R5取代;
R5选自卤素、硝基、氰基、C1-C3的烷基或C1-C3的卤代烷基。
更进一步的说,式中:
R2选自H或C1-C3的烷基;
R3选自C1-C6的烷基;
R4选自苯、呋喃、噻吩、吡咯、吡唑、噁唑、异噁唑、噻唑、吡啶、吡嗪、嘧啶、哒嗪、苯并噁唑、苯并噻唑、喹喔啉、喹唑啉,上述环上的氢可被一个或多个相同或不同的R5取代;
R5选自氟、氯、溴、碘、硝基、氰基、C1-C3的烷基或C1-C3的卤代烷基。
表1部分通式III化合物的结构和物理性质
Figure BDA0002168926680000032
Figure BDA0002168926680000041
Figure BDA0002168926680000051
Figure BDA0002168926680000061
Figure BDA0002168926680000071
本发明所具有的优点:
本发明制备过程中选用酰卤(II)与取代羧酸肟酯(III)在适宜溶剂中,进行缩合反应,制得如通式I所示的酰胺类化合物,与原有的酰氯与胺的反应相比,避免了高价格、且原料不易得的苯胺的使用,起到了明显的降低成本的作用(本发明提供的路线成本约为100万元,而按照现有酰氯与胺反应的方法成本约为200万元),并避免了缚酸剂的使用,降低了对环境的污染并增加反应的安全性。
同时,本发明制备所得的酰胺类化合物具有高杀菌活性化合物,同时在制备过程中涉及的通式III所示的羧酸肟酯类化合物还可以用来制备酰胺类杀菌剂。
具体实施方式
下列合成实例可用来进一步说明本发明,但不意味着限制本发明。
实施例1
2-甲基-3-(2-戊氧基)环己-2-烯-1-酮-O-苯甲酰肟(表1化合物III-68)的合成
(1)2-[(二甲基氨基)亚甲基]-1,3-环己二酮的合成
Figure BDA0002168926680000081
往带有机械搅拌装置的三口烧瓶中加入甲醇(200.0g),二甲胺溶液(112.8g,40%)和1,3-环己二酮(56.0g),室温搅拌30min,降温至0-10℃,将甲醛溶液(88.3g,37%)缓慢滴入,搅拌5h,得到2-[(二甲基氨基)亚甲基]-1,3-环己二酮,直接用于下一步。
(2)2-甲基-1,3-环己二酮的合成
Figure BDA0002168926680000082
将上步反应液转移至高压反应釜,加入钯碳催化剂(5.6g,10%),在2MPa、30℃条件下反应8h。取出反应液,滤除催化剂,加入200g水,蒸除甲醇,用浓盐酸调至pH值为6。有大量固体析出,抽滤,干燥,得到2-甲基-1,3-环己二酮51.7g,收率:80%(以1,3-环己二酮计算),经液相检测归一纯度为97.5%。
(3)2-甲基-3-(2-戊氧基)环己-2-烯-1-酮的合成
Figure BDA0002168926680000083
往带有分水装置的三口烧瓶中加入2-甲基-1,3-环己二酮(12.9g)、甲苯(200mL)、2-戊醇(72.1g)、对甲苯磺酸一水合物(2.0g),升温至回流温度反应4h。降温至室温后,加入NaHCO3(11.2g)饱和水溶液,分层。油层进行减压脱溶。得到中间体2-甲基-3-(2-戊氧基)环己-2-烯-1-酮18.1g,收率:90%(以2-甲基-1,3-环己二酮计算)。
(4)2-甲基-3-(2-戊氧基)环己-2-烯-1-酮肟的合成
Figure BDA0002168926680000084
向反应瓶内加入2-甲基-3-(2-戊氧基)环己-2-烯-1-酮(19.6g)、盐酸羟胺(13.9g)、醋酸钠(32.8g)、无水甲醇(200mL)、水(20mL),升温至80℃反应4h。再将反应液降至10℃以下,再加入200mL水。此时有大量固体析出,进行过滤,滤饼用冰水淋洗,烘干。得到中间体2-甲基-3-(2-戊氧基)环己-2-烯-1-酮肟11.6g,定量含量98%,收率:54%(以2-甲基-3-(2-戊氧基)环己-2-烯-1-酮计算)。
(5)2-甲基-3-(2-戊氧基)环己-2-烯-1-酮-O-苯甲酰肟的合成
Figure BDA0002168926680000091
向反应瓶内加入中间体2-甲基-3-(2-戊氧基)环己-2-烯-1-酮肟(21.1g)、三乙胺(10.1g)、甲苯(200mL),向其中滴加苯甲酰氯(14.1g),滴毕室温搅拌3h。将反应液降温至室温,再加入水(100mL),并在此温度下搅拌30min后分层。油层脱溶得到中间体2-甲基-3-(2-戊氧基)环己-2-烯-1-酮-O-苯甲酰肟31.2g,收率:99%(以2-甲基-3-(2-戊氧基)环己-2-烯-1-酮肟计算)。
实施例2
2-甲基-3-(2-戊氧基)环己-2-烯-1-酮-O-特戊酰肟(表1化合物III-67)的合成
Figure BDA0002168926680000092
向反应瓶内加入中间体2-甲基-3-(2-戊氧基)环己-2-烯-1-酮肟(21.1g)、三乙胺(10.1g)、甲苯(200mL),向其中滴加特戊酰氯(12.1g),滴毕室温搅拌3h。将反应液降温至室温,再加入水(100mL),并在此温度下搅拌30min后分层。油层脱溶得到中间体2-甲基-3-(2-戊氧基)环己-2-烯-1-酮-O-特戊酰肟28.4g,收率:96%(以2-甲基-3-(2-戊氧基)环己-2-烯-1-酮肟计算)。
实施例3
2-甲基-3-(2-戊氧基)环己-2-烯-1-酮-O-乙酰肟(表1化合物III-65)的合成
Figure BDA0002168926680000093
向反应瓶内加入中间体2-甲基-3-(2-戊氧基)环己-2-烯-1-酮肟(21.1g)、三乙胺(10.1g)、甲苯(200mL),向其中滴加乙酰氯(7.9g),滴毕室温搅拌3h。将反应液降温至室温,再加入水(100mL),并在此温度下搅拌30min后分层。油层脱溶得到中间体2-甲基-3-(2-戊氧基)环己-2-烯-1-酮-O-乙酰肟24.8g,收率:98%(以2-甲基-3-(2-戊氧基)环己-2-烯-1-酮肟计算)。
实施例4
2-甲基-3-(2-戊氧基)环己-2-烯-1-酮-O-(1-甲基-3-二氟甲基-1H-吡唑-4-羧酸)肟(表1化合物III-87)的合成
Figure BDA0002168926680000094
向反应瓶内加入中间体2-甲基-3-(2-戊氧基)环己-2-烯-1-酮肟(21.1g)、三乙胺(10.1g)、甲苯(200mL),向其中滴加1-甲基-3-二氟甲基-1H-吡唑-4-酰氯(19.5g),滴毕室温搅拌1h。将反应液降温至室温,再加入水(100mL),并在此温度下搅拌30min后分层。油层脱溶得到中间体2-甲基-3-(2-戊氧基)环己-2-烯-1-酮-O-(1-甲基-3-二氟甲基-1H-吡唑-4-羧酸)肟36.0g,收率:97%(以2-甲基-3-(2-戊氧基)环己-2-烯-1-酮肟计算)。
实施例5
3-(二氟甲基)-1-甲基-N-(2-甲基-3-(2-戊氧基)苯基)-1H-吡唑-4-甲酰胺(表2化合物I-315)的合成
Figure BDA0002168926680000101
向反应瓶内加入中间体2-甲基-3-(2-戊氧基)环己-2-烯-1-酮-O-苯甲酰肟(31.5g,合成方法见实施例1),向此反应液中开始快速滴加3-(二氟甲基)-1-甲基-1H-吡唑-4-甲酰氯(20.4g)的甲苯溶液(100mL),加入甲基磺酸(1.0g),将反应液缓慢升温至110℃并抽真空至-0.04MPa,并在此温度下反应4h。将反应液降温至室温,再加入水(100mL)和NaOH(16.8g,33%)水溶液,并在此温度下搅拌30min后分层。油层脱溶,残余物再用甲醇水重结晶得3-(二氟甲基)-1-甲基-N-(2-甲基-3-(2-戊氧基)苯基)-1H-吡唑-4-甲酰胺25.9g,收率:73.8%。
实施例6
3-(二氟甲基)-1-甲基-N-(2-甲基-3-(2-戊氧基)苯基)-1H-吡唑-4-甲酰胺(表2化合物I-315)的合成
Figure BDA0002168926680000102
向反应瓶内加入中间体2-甲基-3-(2-戊氧基)环己-2-烯-1-酮-O-特戊酰肟(29.5g,合成方法见实施例2),向此反应液中开始快速滴加3-(二氟甲基)-1-甲基-1H-吡唑-4-甲酰氯(20.4g)的甲苯溶液(100mL),加入甲基磺酸(1.0g),将反应液缓慢升温至110℃并抽真空至-0.04MPa,并在此温度下反应4h。将反应液降温至室温,再加入水(100mL)和NaOH(16.8g,33%)水溶液,并在此温度下搅拌30min后分层。油层脱溶,残余物再用甲醇水重结晶得3-(二氟甲基)-1-甲基-N-(2-甲基-3-(2-戊氧基)苯基)-1H-吡唑-4-甲酰胺18.4g,收率:52.4%。
实施例7
3-(二氟甲基)-1-甲基-N-(2-甲基-3-(2-戊氧基)苯基)-1H-吡唑-4-甲酰胺(表2化合物I-315)的合成
Figure BDA0002168926680000111
向反应瓶内加入中间体2-甲基-3-(2-戊氧基)环己-2-烯-1-酮-O-乙酰肟(25.3g,合成方法见实施例3),向此反应液中开始快速滴加3-(二氟甲基)-1-甲基-1H-吡唑-4-甲酰氯(20.4g)的甲苯溶液(100mL),加入甲基磺酸(1.0g),将反应液缓慢升温至110℃并抽真空至-0.04MPa,并在此温度下反应4h。将反应液降温至室温,再加入水(100mL)和NaOH(16.8g,33%)水溶液,并在此温度下搅拌30min后分层。油层脱溶,残余物再用甲醇水重结晶得3-(二氟甲基)-1-甲基-N-(2-甲基-3-(2-戊氧基)苯基)-1H-吡唑-4-甲酰胺16.9g,收率:48.1%。
实施例8
3-(二氟甲基)-1-甲基-N-(2-甲基-3-(2-戊氧基)苯基)-1H-吡唑-4-甲酰胺(表2化合物I-315)的合成
Figure BDA0002168926680000112
向反应瓶内加入中间体2-甲基-3-(2-戊氧基)环己-2-烯-1-酮-O-(1-甲基-3-二氟甲基-1H-吡唑-4-羧酸)肟(36.0g,合成方法见实施例4),向此反应液中开始快速滴加3-(二氟甲基)-1-甲基-1H-吡唑-4-甲酰氯(19.5g)的甲苯溶液(100mL),加入甲基磺酸(1.0g),将反应液缓慢升温至100℃并抽真空至-0.03MPa,并在此温度下反应2h,去掉真空继续反应2h。将反应液降温至室温,再加入NaOH(8.8g)水溶液(120mL),并在此温度下搅拌30min后分层。水层再用甲苯(50mL)反萃,合成油层并脱溶得到油状产品。产品再用2倍油状产品重量的甲醇水(85%)重结晶,得到固体产品20.7g,收率56%。
实施例9
3-(二氟甲基)-1-甲基-N-(2-甲基-3-(2-戊氧基)苯基)-1H-吡唑-4-甲酰胺(表2化合物I-315)的合成
Figure BDA0002168926680000113
向反应瓶内加入中间体2-甲基-3-(2-戊氧基)环己-2-烯-1-酮-O-苯甲酰肟(31.5g,合成方法见实施例1),向此反应液中开始快速滴加3-(二氟甲基)-1-甲基-1H-吡唑-4-甲酰氯(20.4g)的甲苯溶液(100mL),加入甲基磺酸(1.0g),将反应液缓慢升温至80℃并抽真空至-0.05MPa,并在此温度下反应4h。将反应液降温至室温,再加入水100mL和NaOH(16.8g,33%)水溶液,并在此温度下搅拌30min后分层。油层脱溶,残余物再用甲醇水重结晶得3-(二氟甲基)-1-甲基-N-(2-甲基-3-(2-戊氧基)苯基)-1H-吡唑-4-甲酰胺21.8g,收率:62.1%。
实施例10
3-(二氟甲基)-1-甲基-N-(2-甲基-3-(2-戊氧基)苯基)-1H-吡唑-4-甲酰胺(表2化合物I-315)的合成
Figure BDA0002168926680000121
向反应瓶内加入中间体2-甲基-3-(2-戊氧基)环己-2-烯-1-酮-O-苯甲酰肟(31.5g,合成方法见实施例1),向此反应液中开始快速滴加3-(二氟甲基)-1-甲基-1H-吡唑-4-甲酰氯(20.4g)的甲苯溶液(100mL),加入甲基磺酸(1.0g),将反应液缓慢升温至80℃并抽真空至-0.01MPa,并在此温度下反应4h。将反应液降温至室温,再加入水(100mL)和NaOH(16.8g,33%)水溶液,并在此温度下搅拌30min后分层。油层脱溶,残余物再用甲醇水重结晶得3-(二氟甲基)-1-甲基-N-(2-甲基-3-(2-戊氧基)苯基)-1H-吡唑-4-甲酰胺19.3g,收率:55.0%。
实施例11
3-(二氟甲基)-1-甲基-N-(2-甲基-3-(2-戊氧基)苯基)-1H-吡唑-4-甲酰胺(表2化合物I-315)的合成
Figure BDA0002168926680000122
向反应瓶内加入中间体2-甲基-3-(2-戊氧基)环己-2-烯-1-酮-O-苯甲酰肟(31.5g,合成方法见实施例1),向此反应液中开始快速滴加3-(二氟甲基)-1-甲基-1H-吡唑-4-甲酰氯(20.4g)的乙腈溶液(100mL),加入甲基磺酸(1.0g),将反应液缓慢升温至110℃并抽真空至-0.04MPa,并在此温度下反应4h。将反应液降温至室温,蒸出绝大部分乙腈后用甲苯溶解,再加入水(100mL)和NaOH(16.8g,33%)水溶液,并在此温度下搅拌30min后分层。油层脱溶,残余物再用甲醇水重结晶得3-(二氟甲基)-1-甲基-N-(2-甲基-3-(2-戊氧基)苯基)-1H-吡唑-4-甲酰胺25.3g,收率:72.1%。
实施例12
1,3-二甲基-5-氯-N-(2-甲基-3-(2-戊氧基)苯基)-1H-吡唑-4-甲酰胺(表2化合物I-317)的合成
Figure BDA0002168926680000123
向反应瓶内加入中间体2-甲基-3-(2-戊氧基)环己-2-烯-1-酮-O-苯甲酰肟(24.8g,合成方法见实施例1),向此反应液中开始快速滴加1,3-二甲基-5-氯-1H-吡唑-4-甲酰氯(15.2g)的甲苯溶液(100mL),加入甲基磺酸(0.8g),将反应液缓慢升温至110℃并抽真空至-0.04MPa,并在此温度下反应4h。将反应液降温至室温,再加入水(100mL)和NaOH(16.8g,33%)水溶液,并在此温度下搅拌30min后分层。油层脱溶,残余物再用甲醇水重结晶得1,3-二甲基-5-氯-N-(2-甲基-3-(2-戊氧基)苯基)-1H-吡唑-4-甲酰胺18.2g,收率:66.1%。
实施例13
2-甲基-3-(2-己氧基)环己-2-烯-1-酮-O-苯甲酰肟(表1化合物III-100)的合成(1)2-甲基-3-(2-己氧基)环己-2-烯-1-酮的合成
Figure BDA0002168926680000131
往带有分水装置的三口烧瓶中加入2-甲基-1,3-环己二酮(12.9g)、甲苯(200mL)、2-己醇(83.6g)、对甲苯磺酸一水合物(2.0g),升温至回流温度反应4h。降温至室温后,加入NaHCO3(11.2g)饱和水溶液,分层。油层进行减压脱溶。得到中间体2-甲基-3-(2-己氧基)环己-2-烯-1-酮16.2g,收率:75.3%(以2-甲基-1,3-环己二酮计算)。
(2)2-甲基-3-(2-己氧基)环己-2-烯-1-酮肟的合成
Figure BDA0002168926680000132
向反应瓶内加入2-甲基-3-(2-己氧基)环己-2-烯-1-酮(21.0g)、盐酸羟胺(13.9g)、醋酸钠(32.8g)、无水甲醇(200mL)、水(20mL),升温至80℃反应4h。再将反应液降至10℃以下,再加入200mL水。此时有大量固体析出,进行过滤,滤饼用冰水淋洗,烘干。得到中间体2-甲基-3-(2-己氧基)环己-2-烯-1-酮肟10.8g,定量含量98%,收率:48%(以2-甲基-3-(2-己氧基)环己-2-烯-1-酮计算)。
(3)2-甲基-3-(2-己氧基)环己-2-烯-1-酮-O-苯甲酰肟的合成
Figure BDA0002168926680000133
向反应瓶内加入中间体2-甲基-3-(2-己氧基)环己-2-烯-1-酮肟(22.5g)、三乙胺(10.1g)、甲苯(200mL),向其中滴加苯甲酰氯(14.1g),滴毕室温搅拌3h。将反应液降温至室温,再加入水(100mL),并在此温度下搅拌30min后分层。油层脱溶得到中间体2-甲基-3-(2-己氧基)环己-2-烯-1-酮-O-苯甲酰肟30.8g,收率:94%(以2-甲基-3-(2-己氧基)环己-2-烯-1-酮肟计算)。
实施例14
1,3-二甲基-5-氯-N-(2-甲基-3-(2-己氧基)苯基)-1H-吡唑-4-甲酰胺(表2化合物I-353)的合成
Figure BDA0002168926680000141
向反应瓶内加入中间体2-甲基-3-(2-己氧基)环己-2-烯-1-酮-O-苯甲酰肟(26.0g,合成方法见实施例13),向此反应液中开始快速滴加1,3-二甲基-5-氯-1H-吡唑-4-甲酰氯(15.2g)的甲苯溶液(100mL),加入甲基磺酸(0.8g),将反应液缓慢升温至110℃并抽真空至-0.04MPa,并在此温度下反应4h。将反应液降温至室温,再加入水(100mL)和NaOH(16.8g,33%)水溶液,并在此温度下搅拌30min后分层。油层脱溶,残余物再用甲醇水重结晶得1,3-二甲基-5-氯-N-(2-甲基-3-(2-己氧基)苯基)-1H-吡唑-4-甲酰胺18.6g,收率:64.8%。
通过本发明所提供的方法可制备通式(I)所示酰胺类化合物,表2列出部分通式(I)化合物的结构。
表2.部分通式(I)化合物的结构
Figure BDA0002168926680000142
Figure BDA0002168926680000143
Figure BDA0002168926680000151
Figure BDA0002168926680000161
Figure BDA0002168926680000171
Figure BDA0002168926680000181
Figure BDA0002168926680000191
Figure BDA0002168926680000201
Figure BDA0002168926680000211
Figure BDA0002168926680000221
Figure BDA0002168926680000231
Figure BDA0002168926680000241
Figure BDA0002168926680000251
Figure BDA0002168926680000261
Figure BDA0002168926680000271
Figure BDA0002168926680000281
Figure BDA0002168926680000291
Figure BDA0002168926680000301
本发明的另外一个目的是提供用于制备如通式I所示杀菌剂的中间体(取代羧酸肟酯(III))。因此本发明还包括一种用于制备如通式I所示酰胺类化合物的羧酸肟酯类化合物(III)。通式I酰胺化合物可作为杀菌剂使用。应明确的是,在本发明的权利要求所限定的范围内,可进行各种变换和改动。

Claims (10)

1.一种酰胺类化合物(通式I所示)的制备方法,其特征在于:酰卤(II)与取代羧酸肟酯(III)在适宜溶剂中,进行缩合反应,得如通式I所示的酰胺类化合物;反应式如下:
Figure FDA0002168926670000011
式中:
R1选自苯环、具有1-3个杂原子的5或6元杂环或苯并具有1-3个杂原子的5或6元的杂环,其中,苯环或杂环上的氢可被一个或多个相同或不同的R5取代;
R2选自H或C1-C12的烷基;
R3选自C1-C12的烷基、C1-C6的卤代烷基、C3-C6的环烷基、C3-C6的环烷基C1-C6烷基、C3-C6的卤代环烷基或C3-C6的环烷基C3-C6的环烷基;
R4选自C1-C6的烷基、C1-C6的卤代烷基、C3-C6的环烷基、C3-C6的环烷基C1-C6烷基、C3-C6的卤代环烷基、C1-C6的烷氧基C1-C6的烷基、C1-C6的卤代烷氧基C1-C6的烷基、C1-C6的烷氧基、C1-C6的卤代烷氧基、C3-C6的环烷氧基、C3-C6的卤代环烷氧基、C3-C6的环烷基C1-C6的烷氧基、苯环、具有1-3个杂原子的5或6元杂环或苯并具有1-3个杂原子的5或6元杂环,其中,苯环或杂环上的氢可被一个或多个相同或不同的R5取代;
R5选自卤素、硝基、氰基、C1-C6的烷基、C1-C6的卤代烷基、C3-C6的环烷基、C3-C6的卤代环烷基、C1-C6的环烷基C1-C6的烷基、C1-C6的烷氧基C1-C6的烷基、C1-C6的卤代烷氧基C1-C6的烷基、C1-C6的烷氧基、C1-C6的卤代烷氧基、C3-C6的环烷氧基、C3-C6的卤代环烷氧基或C3-C6的环烷基C1-C6的烷氧基;
L代表离去基团。
2.按照权利要求1所述的制备方法,其特征在于:
通式(II)所示的酰卤化合物与取代羧酸肟酯(III)加料摩尔比为1:0.8-1.5,于适宜的溶剂中、温度为-10℃至适宜溶剂沸点范围内,进行缩合反应0.5-8个小时,制得通式I所示的酰胺类化合物。
3.按照权利要求1或2所述的制备方法,其特征在于:
所述的溶剂选自二氯甲烷、氯仿、四氯化碳、己烷、苯、甲苯、乙酸乙酯、乙腈、四氢呋喃、二氧六环、丙酮、丁酮、N,N-二甲基甲酰胺或二甲基亚砜。
4.按照权利要求2所述的制备方法,其特征在于:
通式(II)所示的酰卤化合物与取代羧酸肟酯(III)加料摩尔比为1:0.8-1.5,于适宜的溶剂中、温度为-10℃至适宜溶剂沸点范围内、压力为-0.1MPa~-0.01MPa压力下,进行缩合反应0.5-8个小时,制得通式I所示的酰胺类化合物。
5.按照权利要求4所述的制备方法,其特征在于:
通式(II)所示的酰卤化合物与取代羧酸肟酯(III)加料摩尔比为1:0.8-1.5,于适宜的溶剂中、温度为-10℃至适宜溶剂沸点范围内、压力为-0.1MPa~-0.01MPa压力下,加入适宜的酸,进行缩合反应0.5-8个小时,制得通式I所示的酰胺类化合物。
6.按照权利要求5所述的制备方法,其特征在于:
所述的酸选自盐酸、硫酸、甲磺酸或对甲苯磺酸。
7.按照权利要求4所述的制备方法,其特征在于:
通式(II)所示的酰卤化合物与取代羧酸肟酯(III)加料摩尔比为1:0.9-1.2,在无缚酸剂存在下、于适宜的溶剂中、温度为20℃至沸点范围内、压力为-0.05MPa~-0.01MPa压力下,加入适宜的酸,进行缩合反应0.5-4个小时,制得酰胺类化合物;其中所述的溶剂选自甲苯或乙腈;所述的的酸选自盐酸、硫酸或对甲磺酸,所述的酸与取代羧酸肟酯(III)加料摩尔比为0.01-0.5:1。
8.一种用于制备如通式I所示酰胺类化合物的羧酸肟酯类化合物,其特征在于:羧酸肟酯类化合物如通式III所示:
Figure FDA0002168926670000021
式中:
R2选自H或C1-C12的烷基;
R3选自C1-C12的烷基、C1-C6的卤代烷基、C3-C6的环烷基、C3-C6的环烷基C1-C6烷基、C3-C6的卤代环烷基或C3-C6的环烷基C3-C6的环烷基;
R4选自C1-C6的烷基、C1-C6的卤代烷基、C3-C6的环烷基、C3-C6的环烷基C1-C6烷基、C3-C6的卤代环烷基、C1-C6的烷氧基C1-C6的烷基、C1-C6的卤代烷氧基C1-C6的烷基、C1-C6的烷氧基、C1-C6的卤代烷氧基、C3-C6的环烷氧基、C3-C6的卤代环烷氧基、C3-C6的环烷基C1-C6的烷氧基、苯环、具有1-3个杂原子的5或6元杂环或苯并具有1-3个杂原子的5或6元杂环,其中,苯环或杂环上的氢可被一个或多个相同或不同的R5取代;
R5选自卤素、硝基、氰基、C1-C6的烷基、C1-C6的卤代烷基、C3-C6的环烷基、C3-C6的卤代环烷基、C1-C6的环烷基C1-C6的烷基、C1-C6的烷氧基C1-C6的烷基、C1-C6的卤代烷氧基C1-C6的烷基、C1-C6的烷氧基、C1-C6的卤代烷氧基、C3-C6的环烷氧基、C3-C6的卤代环烷氧基或C3-C6的环烷基C1-C6的烷氧基。
9.按权利要求8所述的用于制备如通式I所示酰胺类化合物的羧酸肟酯类化合物,其特征在于:式中:
R2选自H或C1-C6的烷基;
R3选自C1-C8的烷基;
R4选自苯环、具有1-3个杂原子的5或6元杂环、苯并具有1-3个杂原子的5或6元杂环,其中,苯环或杂环上的氢可被一个或多个相同或不同的R5取代;
R5选自卤素、硝基、氰基、C1-C3的烷基或C1-C3的卤代烷基。
10.按权利要求9所述的用于制备如通式I所示酰胺类化合物的羧酸肟酯类化合物,其特征在于:式中:
R2选自H或C1-C3的烷基;
R3选自C1-C6的烷基;
R4选自苯、呋喃、噻吩、吡咯、吡唑、噁唑、异噁唑、噻唑、吡啶、吡嗪、嘧啶、哒嗪、苯并噁唑、苯并噻唑、喹喔啉、喹唑啉,上述环上的氢可被一个或多个相同或不同的R5取代;
R5选自氟、氯、溴、碘、硝基、氰基、C1-C3的烷基或C1-C3的卤代烷基。
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