CN87100616A - 咪唑啉(硫)酮衍生物,其制备工艺及其在植保方面的应用 - Google Patents

咪唑啉(硫)酮衍生物,其制备工艺及其在植保方面的应用 Download PDF

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CN87100616A
CN87100616A CN198787100616A CN87100616A CN87100616A CN 87100616 A CN87100616 A CN 87100616A CN 198787100616 A CN198787100616 A CN 198787100616A CN 87100616 A CN87100616 A CN 87100616A CN 87100616 A CN87100616 A CN 87100616A
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雷纳尔·利伯
雷恩哈德·翰德特
黑尔马·米尔登伯格克劳斯·伯尔
赫曼·比伦格克劳斯·伯尔
赫曼·比伦格
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Abstract

通式(I)化合物具有良好的除莠作用,式中X为氧或硫;R1为氢或卤素;R2和R3为氢或卤素,卤代烷、RO-或RS-、(取代)苯亚磺酰基、(取代)苯磺酰基、(取代)苯氧甲基、烷氧羰基、NO2或CN;R4为氢、(取代)脂族基团或-C(X)-NHR7;R5为氢。或可与式(I)中C4相连的(取代)脂族基团,其中一个CH2可被O或S所代替;R6为氢或烷基。

Description

具有咪唑啉酮结构的除莠剂的世界专利号为WO/01383。现又发现一些新的咪唑啉(硫)酮衍生物具有优良的除莠作用。
本发明涉及结构为Ⅰ的化合物其中 X 为氧或硫;
R1为氢或卤原子,R2,R3各自为(不必相同)氢,卤原子,(C1-C4)烷基,卤代(C1-C4)烷基,(C1-C4)烷氧基,卤代(C1-C4)烷氧基,(C3-C6)环烷氧基,(C2-C4)链烯氧基,卤代(C2-C4)链烯氧基,(C5-C6)环烯氧基,(C3-C4)炔氧基,卤代(C3-C4)炔氧基,(C1-C4)烷氧基(C1-C4)烷氧基;(C1-C4)烷氧羰基(C1-C4)烷氧羰基,卤代(C1-C4)烷氧羰基,(C1-C4)亚烷磺酰基,(C1-C4)烷基磺酰基;苯氧基,苯硫基,苯亚磺酰基,苯磺酰基其中苯环可被一至三个卤原子,(C1-C4)烷基,CF3或NO2等所取代;吡啶氧基,其环上可被一至二个卤原子或CF3取代;苄氧基,苯氧甲基,其中苯环可被一至三个卤原子,(C1-C4)烷基,(C1-C4)烷氧基,CF3或NO2所取代;(C1-C4)烷氧羰基,(C1-C4)烷氧羰(C1-C4)烷氧基,(C1-C4)烷硫基,(C1-C4)烷氧羰(C1-C4)烷硫基,NO2或CN基。
R4为氢,(C1-C4)烷基,卤代(C1-C4)烷基,(C3-C4)链烯基,(C3-C4)环烷基,(C5-C6)环烯基,(C3-C4)炔基,(C1-C4)烷氧,(C1-C4)烷基,(C1-C4)烷氧羰(C1-C4)烷基,(C1-C4)烷硫(C1-C4)烷基;苄,其环上可被一至三个卤原子,(C1-C4)烷基,(C1-C4)烷氧基,(C1-C4)烷氧羰基,CF3,NO2,CN,或
Figure 87100616_IMG7
取代,
R5为H,(C1-C4)烷基,(C3-C4)键烯基,(C3-C4)炔基,(C3-C6)环烷基,(C1-C4)烷氧(C1-C4)烷基,(C1-C4)烷硫(C1-C4)烷基,(C1-C4)烷氧羰基(C1-C4)烷基,或一个(C4-C5)亚烷基碳链,两端接于咪唑啉(硫)酮环的N-3及C-4上,其中某一CH2可代之以氧或硫原子,可连接(一至二个)下述取代基:(C1-C4)烷基,(C1-C4)烷氧羰基,(C1-C4)烷氧(C1-C4)烷氧羰基,或(C1-C4)烷氧羰(C1-C4)烷氧羰基等;
R6为H或(C1-C4)烷基;
R7为(C1-C8)烷基;苯或苄基,其环上可(一至三)取代以卤原子,(C1-C4)烷基,(C1-C4)烷氧基,CF3,NO2,或(C1-C4)烷氧羰基,但当R5为CH3,X为氧,而R1为氢时,R2及R3不能代表氢,卤原子,(C1-C4)烷基,CF3,(C1-C4)烷氧,苯氧基,氯苯氧基,苄氧基等。
上述中较优者为:R2为F,Cl,Br,(C1-C4)烷氧基,卤代(C1-C4)烷氧基,(C1-C4)烷硫基,(C1-C4)亚烷磺酰基,(C1-C4)烷基磺酰基,或NO2;
R3为H,Cl,Br,(C1-C4)烷基,卤代(C1-C4)烷基,(C1-C4)烷氧基,卤代(C1-C4)烷氧基,(C3-C4)炔氧基(C1-C4)烷硫基,(C1-C4)烷氧羰(C1-C4)烷基,或(C1-C4)烷氧羰(C1-C4)烷氧基;
R4为氢,(C1-C4)烷基;苄基,其中环上可(一至三)取代的卤原子,(C1-C4)烷基,或
Figure 87100616_IMG8
R5为(C1-C4)烷基,或亚丁基,其中某一CH2可代之以氧或硫,可有一至二个(C1-C4)烷基取代基。
R6为氢,R7为(C1-C4)烷基。
若R5为(C4-C5)亚烷基,其中某一CH2为氧或硫所代,尤其是当R5为-CH2CH2-O-CH2-或-CH2-CH2-S-CH2-时,可带(C1-C4)烷基取代基。
通式Ⅰ化合物中作用较优者为:R1=F,R2=F,Cl,Br,(C1-C4)烷氧基,卤代(C1-C4)烷氧(C1-C4)烷硫基,或(C1-C4)烷磺酰基;R3=(C1-C4)烷氧基,卤代(C1-C4)烷氧,(C1-C4)烷硫,(C1-C4)烷氧羰(C1-C4)烷氧,(C1-C4)烷氧羰(C1-C4)烷硫,或炔丙氧基,R4=H,R5=(C1-C4)烷
〔α〕
基,-CH2-CH2-CH2-CH2-,-CH2-CH2-O-CH2-,或
〔α〕
-CH2-CH2-S-CH2-,其中后三者有一至二个(C1-C4)烷基取代基,标以α一端与C-4相接,R6=H。
本发明包含所有通式Ⅰ所表示的几何异构体及其混合物。
卤代烷、烯、炔、烷氧基等表示可由一个至多个Cl,F或Br所取代的上述基团。例如,CF3,1,1,2,2-四氟乙氧基,2,2-二氯-1,1-二氟乙氧基,2-氯-1,1,2-三氟乙氧基,-O-C(Cl)=CHCl,-OCF2-CFBrH,-O-CH2CH2Cl,-OCF2-CFHCF3,-CF2Cl,-CF2CHF2,-CH2CF3,-CF2CHFCl以及-CF2CHFCF3
本发明还涉及通式(Ⅰ)化合物的制备。由通式Ⅱ还原而得,其中当R4=H时如果需要则可将此羟基酯化而得另一些通式Ⅰ化合物。
Figure 87100616_IMG9
进行上述转化的还原剂可以用金属氢化物,如氢化锂铝或硼氢化钠。用硼氢化钠时采用溶剂为低级醇,醇水混合溶剂,或醚类,如乙醚,四氢呋喃,二甲氧乙烷。用氢化锂铝时采用无水醚类,如四氢呋喃,二甲氧乙烷。
还原时温度为0-80℃,最好是10-40℃。
通式Ⅰ中R4=OH时的酯化,可采用相应的烷化剂及无机碱,如碳酸钾,氢氧化碱金属,或氢化钠,或有机碱,如三乙胺,吡啶。温度可在室温及溶剂沸点之间。溶剂可采用不参与反应的任何溶剂,例如,甲基,乙腈,二甲基甲酰胺,丙酮。
通式(Ⅰ)化合物,(R4=OH)可用异(硫)氰酯反应得胺甲酰化物,所用溶剂可为甲苯,丙酮,乙腈,宜用催化量的有机碱,例如三乙胺,吡啶,或1,4-二氮杂-二环〔2,2,2〕-辛烷。
通式(Ⅱ)化合物Ⅱ的原料有一部分是已知的(EP-A70,389,EP-A    104,532),或可用本专业人员已知的简单方法,采用相应的异(硫)氰酸酯及六氢吡啶-2-羧酸或其酯,或N-取代甘氨酸或酯加以制备可参看化学生理及病理11,160至(Beitrage    zur    chemischen    physiologie    und    pathlogie    11,P·160.)。
通式Ⅰ化合物Ⅰ对重要的单及双子叶莠草有突出的广谱除莠作用。对于顽固的多年生莠草(根或茎根繁殖)亦能产生作用。因此于作物的播种及生长前期及后期均可施用。
当萌芽之前施于地表,则莠草的萌芽可受到全面抑制,或萌芽后受到影响,最后于三至五周内死亡。若在萌芽之后施于莠草的地上部分,则立即呈现生长抑制,或最终死亡,因此较早地而且持续地可起除莠作用。
虽对单及双子叶莠草有突出的杀灭作用,但对作物,例如小麦,大麦,燕麦,稻米,玉米,甜菜,棉,大豆等则不受或仅微受损害。因此本发明化合物适用于农作物的除莠。
此外,本发明化合物具有对作物的生长调节作用。它可调节植物代谢,因此可用于简化收割如使脱水,切断及生长抑制等,可扰乱杂草的生长而不危及作物。可抑制许多单及双子叶植物的生长,从而使之退缩或消失。
本发明化合物可用一般常用剂型:喷粉,浓乳,喷液,粉剂,消毒剂,悬浮液,颗粒,或微粒。
喷粉可乳化于水中,除活性物质外其中加有稀释剂或润湿剂,如多醚化烷酚,多醚化醇,烷或烷苯磺酸盐;此外有乳化剂,如木素磺酸钠,2,2′-二萘甲基-6,6′-二磺酸钠,二丁萘磺酸钠,或油酰甲牛磺酸钠。该制剂可用常法制备,例如,研磨并混合。
浓乳的制备,可将本品溶于惰性溶剂中,如丁醇,环己酮,二甲基甲酰胺,二甲苯,或高沸点芳烃,或脂烃,再加一或多种乳化剂。若活性化合物为液体,则可部分或全部省去溶剂。乳化剂可用:烷芳磺酸钙,如十二烷苯磺酸钙,或非离子型乳化剂,如脂肪酸的聚乙二醇酯,烷芳基聚乙二醇基醚,脂肪醇基聚乙二醇基醚,环氧丙烷一环氧乙烷一聚合物,脂肪醇一环氧丙烷一环氧乙烷一聚合物,烷基聚乙二醇基醚,缩山梨醇脂肪酸酯,聚乙二醇基缩山梨醇脂肪酸酯或山梨醇聚乙二醇酯。
粉剂,将活性化合物与其他固体细粒研磨,如滑石,天然土如高岭土,膨润土(Bentonite),pyrophillite,或diatoma-ceous    earth.
颗粒,可将活性化合物与易吸收的粒状惰性物质相混,或将活性物物质浓缩剂体施于载体(如沙,高岭土)表面,或用粘合剂(如聚乙烯醇,聚丙烯酸钠)或成惰性颗粒,如果需要,与肥料相混制成适合于制备肥料颗粒的形状。喷粉中活性化合物浓度为10-90%(重量),用常法配制。乳剂中活性化合物可为5-80%,粉剂中可为5-20%,喷液中为2-20%,颗粒中活性化合物浓度则视其是否为液体,所用为何动助剂及填料。
视需要而定,可加吸附剂,润湿剂,分散剂,乳化剂,渗透剂,溶剂,填料或载体。
用时可将商品予以稀释。例如,喷粉,乳剂,分散剂,有时甚至微粒,可用水稀释。粉剂,颗粒,喷液等,一般使用时不再稀释。
根据外部条件,如温度,湿度等,用量可变范围很大,例如,每公顷0.005-10.0kg,活性较高者则为0.01-5kg。
必要时可用混合剂或加杀虫剂,除莠剂,肥料,生长控制剂,杀霉菌剂或混合剂型。
下面举例说明本发明
A.配方实施例:
粉剂,用10份(w/w,下同)活性化合物加90份滑石,或其他惰性物质,磨细。
水中可分散的粉剂,用25份活性化合物64份含高岭土的石英作为惰性物质,10份木素磺酸钾及1份油酰甲牛磺酸钠作为分散剂,混合磨细。
在水中易分散的浓缩剂,20份活性化合物,6份烷酚基聚乙二醇基醚(Triton
Figure 87100616_IMG10
207),3份异十三醇基聚乙二醇基醚(8AeO),71份石腊油(沸程可为255左右至377℃以上),球磨中混合,至细度为5微米。
浓缩乳剂,由15份活性化合物,75份环己铜作为惰性溶剂,10份壬基苯基聚乙氧基醚(10AeO)作为乳化剂组成。
B.化学实施例
实施例1
3-(4-氯-2-氟-5-甲氧-苯基)-4-羟-1-甲-咪唑啉-2-酮
将27.3克(0.10mol)3-(4-氯-2-氟-5-甲氧苯基)-1-甲咪唑啉-2,4-二酮溶于200毫升甲醇中,分批加入5.7克(0.15mol)硼氢化钠,自动升温至30-35℃,加完后于30℃再搅拌1小时倾于500毫升冰水中,滤集沉淀。干后得25.2克(92%产率),3-(4-氯-2-氟-5-甲氧苯基)-4-羟基-1-甲基-咪唑啉-2-酮,为无色结晶,mp    138-140℃。
实施例2
4-羟-1-甲-3-〔3-甲-4-(1,1,2,2-四氟乙氧)-苯基〕-咪唑啉-2-酮
将16.0克(0.05mol)1-甲基-3-〔3-甲基-4-(1,1,2,2-四氟乙氧)-苯基〕-咪唑啉-2,4-二酮溶于100毫升异丙醇中,分批加2.85克(0.075mol)硼氢化钠,使温度不超过40℃,加完后于40℃再搅拌30分钟,倾于300毫升冰水中,以2×100毫升二氯甲烷抽提,以100毫升水洗有机层,以硫酸钠干燥。蒸去溶剂得15.4克(96%产率)4-羟-1-甲基-3-〔3-甲基-4-(1,1,2,2-四氟乙氧)-苯基〕-咪唑啉-2-酮,浅黄色稠油。
实施例3
1-丁基-3-(4-氯-2-氟-5-甲氧-苯基)-4-羟基-咪唑啉-2-硫酮
将33.3g(0.10mol)1-丁基-3-(4-氯-2-氟-5-甲氧-苯基)-4-羰基-2-硫羰-咪唑啉溶于300毫升甲醇中,分批加5.7g(0.15mol)硼氢化钠,使温度不超过30℃,加完后于30℃继续搅拌30分钟,倾于800毫升冰水中,沉淀过滤并干燥,得31.8克(95%),1-丁基3-(4-氯-2-氟-5甲氧基-苯基)-4-羟基-咪唑啉-2-硫酮,无色结晶,m.p.137-138℃。
实施例4
3-(4-氯-2-氟-5甲氧-苯基)-1-甲基-4-(N-甲氨羰氧)-咪唑啉-2-酮
将27.5克(0.1mol)3-(4-氯-2-氟-5-甲氧苯基)-4-羟-1-甲基-咪唑啉-2-酮(例1)溶于200毫升乙腈中,加50毫克二氮杂二环〔2,2,2〕苯烷,并于20℃滴加6.84克(0.12mol)甲基异腈酸酯,于50℃搅拌5小时,蒸去溶剂。残渣用200毫升乙醚加热提取,后用冰浴冷却得沉淀,过滤,干燥,得31.0克(93%)3-(4-氯-2-氟-5甲氧苯基)-1-甲基-4-(N-甲氨羰氧)-咪唑啉-2-酮,无色结晶,mp128-131℃。
实施例5
4-苄氧-1-甲基3-〔3-甲基-4-(1,1,2,2-四氟乙氧)苯基〕-咪唑啉-2-酮
将16.1克(0.05mol)4-羟-1-甲基-3-〔3-甲基-4(1,1,2,2-四氟乙氧)苯基〕-咪唑啉-2-酮溶于150毫升乙腈中,于5℃加1.50克氢化钠(80%油剂)。于5℃搅拌10分钟后,于5℃加6.40克(0.05mol)苄氯。于50℃搅拌5小时并倾于400毫升冰水中。以2×100毫升二氯甲烷提取,有机层以100毫升水洗,并用Na2SO4干燥。蒸去溶剂得19.4克(94%)4-苄氧-1-甲基-3-〔3-甲基-4-(1,1,2,2-四氟乙氧)苯基〕-咪唑啉-2-酮,淡黄色油。
实施例6
8-(4-氧-2-氟-5-甲氧-苯基)-7-羟基-9-羰基-1,8-二氮杂-二环〔4,3,0〕壬烷
将31.3克(0.10mol)8-(4-氯-2-氟-5-甲氧-苯基)-7,9-二羰-1,8-二氮杂-二环〔4,3,0〕壬烷溶于200毫升甲醇中,分批加入5.7克(0.15mol)硼氢化钠,使温度为30-40℃加完后再于30℃搅拌1小时,并倾于500毫升水中,滤集沉淀并干燥,得29.8克(94%)8-(4-氯-2-氟-5-甲氧苯基)-7-羟基-9-羰基-1,8-二氮杂-二环〔4,3,0〕壬烷,无色结晶,mp155-157℃。
实施例7
8-(4-氯-2-氟-5-甲氧苯基)-7-羟基-9-硫羰-1,8-二氮杂-二环〔4,3,0〕壬烷
32.9克(0.10mol)8-(4-氯-2-氟-5-甲氧苯基)-7-羰基-9-硫羰-1,8-二氯杂〔4,3,0〕壬烷溶于250毫升乙醇中。分批加入5.7克(0.15mol)硼氢化钠,温度30℃,加完后于30℃搅拌30分钟,倾于600毫升冰水中,滤集沉淀,干燥,于甲醇中重结晶,得24.9克(75%)8-(4-氯-2-氟-5-甲氧苯基)-7-羟基-9-硫羰-1,8-二氮杂-二环〔4,3,0〕壬烷,无色结晶,mp208-215℃。
仿此,可得下列表ⅠA,ⅠB,ⅠC中的化合物。
Figure 87100616_IMG11
Figure 87100616_IMG12
Figure 87100616_IMG14
Figure 87100616_IMG15
Figure 87100616_IMG16
Figure 87100616_IMG17
Figure 87100616_IMG18
Figure 87100616_IMG20
生物学实施例
对作物的无害度即对杂草的有害度,用0-5级数字加以表示如下:
0    无作用,即对杂草无害;
1    0-20%作用(有害度);
2    20-40%作用(有害度);
3    40-60%作用(有害度);
4    60-80%作用(有害度);
5    80-100%作用(有害度)。
1.在前期对杂草的作用
单及双子叶杂草的种子或茎根置于塑料器中(直径9cm),培以沙土,以土复盖。其上施以本发明化合物的喷粉或浓缩乳剂,可用水适量制成悬浮液,或乳液。每公顷600-800升。
处理后,将容器置于最佳条件的温室中(23±1℃,60-80%湿度)。
评价在3-4周后进行,将对照样本与试验植物相比。
从表2可看出,本发明化合物对多种杂草有良好的前期杀灭作用。
2.在后期对杂草的作用
单及双子叶杂草的种子或茎根置于塑料器中(直径9cm),培以砂土,以土复盖。在温室中于最佳条件下生长。三周后为三叶期。
施以本发明化合物,用喷粉或乳剂,用不同剂量,加适量的水,每公顷600升。喷于植株上,制剂作用评价于温室最佳条件下(23±1℃,60-80%湿度)3-4周后进行,将试验植物与对照样本相比。
后期对各种杂草亦有良好作用(表3)。
表2    化合物的前期效果
剂量    杀灭作用
实验号    〔公斤(有效物质)/公顷〕    SIA    CRS    ECG    LOM
1    2,5    5    5    5    5
5    2,5    4    5    5    4
7    2,5    5    5    5    5
8    2,5    4    4    2    3
3    2,5    5    3    3    4
6    2,5    5    5    5    5
2    2,5    5    5    5    5
4    2,5    4    5    5    4
9    2,5    5    5    5    5
10    2,5    5    5    2    3
99    2,5    5    5    5    5
112    2,5    4    4    3    4
表3    化合物的后期效果
剂量    杀灭作用
实验号    〔公斤(有效物质)/公顷〕    SIA    CRS    ECG    LOM
7    2,5    4    3    5    3
3    2,5    5    5    4    2
6    2,5    5    5    5    4
2    2,5    5    5    5    4
5    2,5    5    1    5    2
9    2,5    5    5    4    4
55    2,5    4    3    2    2
99    2,5    5    5    5    5
112    2,5    5    3    3    4
缩写注释:
SIA=芥子类植物
CRS=田间菊类植物
ECG=棘状胫类植物
LOM=纵向多花植物
a.i.=有效物质
3.对作物的无害度
在温室中用多种作物的种子置于容器中,培以砂壤土,以土复盖。
部分样本按(1)法处理,另一部分则在长出2-3叶之后施以不同剂量的本发明物,如(2)。
施加后在温室中4-5周后进行评价与对照样本相比。对双子叶作物,如大豆,棉,油菜,甜菜,马铃薯,前期及后期,大剂量施加,均无损害。有些化合物还可保护本谷类诸如大麦,高粱,玉米,小麦,稻等。式Ⅰ类化合物对重要农作物的除莠有高度选择性。
4.稻的除莠
将稻的块茎及根茎、或幼苗,或种子作为样本,及稻的一些杂草,如Cyperus,Eleocharis,Scirpus,Echinochloa等类,置于封闭器皿中(直径13厘米),培以稻用土壤,注水至1厘米。
前期实验,于种植3-4天之后施加,用悬浮液,或乳剂,或颗粒,均配水喷洒。
后期实验,施加时间为杂草与稻的三叶期。
三周之后观察除莠作用及对稻谷的损害。结果表明,可选择性地除莠。
与已知除莠剂相比,本发明化合物对各种杂草,尤其是顽固杂草(由越冬根萌芽)有除莠作用,而稻可不受影响。

Claims (6)

1、式Ⅰ化合物的制备工艺
其中X为氧或硫;
R1氢或卤
R2,R3各自表示(可以不相同),氢,卤,(C1-C4)烷基,卤代(C1-C4)烷基,(C1-C4)烷氧基,卤代(C1-C4)烷氧基,环(C3-C6)烷氧基,(C2-C4)链烯氧基,卤代(C2-C4)链烯氧基,(C5-C6)环烯氧基,(C3-C4)炔氧基,卤代(C3-C4)炔氧基,(C1-C4)烷氧(C1-C4)烷氧基;(C1-C4)烷氧羰(C1-C4)烷氧羰基,卤代(C1-C4)烷氧羰基,(C1-C4)亚烷磺酰基,(C1-C4)烷基磺酰基,苯氧基,苯硫基,苯亚磺酰基,苯磺酰基,其中苯环可有一至三个取代基,它们是卤原子,(C1-C4)烷基,CF3,NO2等,吡啶氧基,其环上可有一至二个取代基,它们是卤原子,CF3等,苄氧基,苯氧甲基,其中苯环可有一至三个取代基,它们是卤原子,(C1-C4)烷基,(C1-C4)烷氧基,CF3,NO2等,(C1-C4)烷氧羰基,(C1-C4)烷氧羰(C1-C4)烷氧基,(C1-C4)烷硫基,(C1-C4)烷氧羰(C1-C4)烷硫基,NO2,CN,
R4为H,(C1-C4)烷基,卤代(C1-C4)烷基,(C3-C4)链烯基,(C3-C4)环烷基,(C5-C6)环烯基,(C3-C4)炔基,(C1-C4)烷氧(C1-C4)烷基,(C1-C4)烷氧羰(C1-C4)烷基,(C1-C4)烷硫(C1-C4)烷基,苄基,其中环上可有一至三个取代基,它们是卤原子,(C1-C4)烷基,(C1-C4)烷氧基,(C1-C4)烷氧基,(C1-C4)烷氧羰基,CF3,NO2,CN;-C(X)NHR7;R5为H,(C1-C4)烷基,(C3-C4)链烯(C3-C4)炔基,(C3-C6)环烷基,(C1-C4)烷氧(C1-C4)烷基,(C1-C4)烷硫(C1-C4)烷基,(C1-C4)烷氧羰(C1-C4)烷基,或(C4-C5)亚烷基,其两端与咪唑啉(硫)酮环的N-3及C-4相接,其中一个CH2可代之以氧或硫,其链上可有一至二个取代基,它们是(C1-C4)烷基,(C1-C4)烷氧羰基,(C1-C4)烷氧(C1-C4)烷氧羰基,(C1-C4)烷氧羰(C1-C4)烷氧羰基,
R6为氢或(C1-C4)烷基,
R7为(C1-C8)烷基,苯或苄基,其中环上可有一至三个取代基,它们是卤原子,(C1-C4)烷基,(C1-C4)烷氧基,CF3,NO2,(C1-C4)烷氧羰基,但当R5为CH3,X为氧,R1为氢时,R2,R3不可代表,氢,卤原子,(C1-C4)烷基,CF3,(C1-C4)烷氧基,苯氧基,氯苯氧基,苄氧基,
该方法包括将原料Ⅱ,进行还原,如果需要将所得物予以酯化。
2、根据权利要求1所述的工艺,其中式Ⅰ及Ⅱ中,R2为氟,氯,溴,(C1-C4)烷氧基,卤代(C1-C4)烷氧基,(C1-C4)烷硫基,(C1-C4)亚烷磺酰基,(C1-C4)磺酰基,硝基;
R3为氢,氯,溴,(C1-C4)烷基,卤代(C1-C4)烷基,(C1-C4)烷氧基,卤代(C1-C4)烷氧基,(C3-C4)炔氧基,(C1-C4)烷硫,(C1-C4)烷氧羰(C1-C4)烷硫基,(C1-C4)烷氧羰(C1-C4)烷氧基;
R4为氢,(C1-C4)烷基,苄基,其中环上可有一至三个取代基,它们是卤原子,(C1-C4)烷基,-CONHR7;
R5为(C1-C4)烷基,或亚丁基,其中一个CH2可代之以氧或硫,链上可有一至二个取代基,它们是,(C1-C4)烷基;
R6为氢以及
R7为(C1-C4)烷基。
3、根据权利要求1或2所述的工艺,其中式Ⅰ及Ⅱ中R1为F,R2为F,Cl,Br,(C1-C4)烷氧基,卤代(C1-C4)烷氧基,(C1-C4)烷硫基,(C1-C4)烷基磺酰基,R3=(C1-C4)烷氧基,卤代(C1-C4)烷氧基,(C1-C4)烷硫基,(C1-C4)烷氧羰(C1-C4)烷氧基,(C1-C4)氧羰(C1-C4)烷硫基,炔丙氧基;R4为氢,R5为(C1-C4)烷基,-CH2CH2CH2CH2-,-CH2CH2-C 2-,-CH2CH2SC
Figure 87100616_IMG5
-,后三者可被一至二个(C1-C4)烷基取代,另一端接于咪唑啉(硫)酮的C-4(α端),X为氧或硫,R6为氢。
4、权利要求1,2或3中所述的化合物Ⅰ,用于除莠。
5、权利要求1,2及3中所述的化合物Ⅰ,配于除莠剂中。
6、除莠过程,包括将权利要求1,2或3所述的一个除莠有效剂量的化合物用于培养器皿或用于植物。
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CN111961033A (zh) * 2013-10-07 2020-11-20 先正达参股股份有限公司 除草化合物
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