二氯化合物

Their structures were confirmed by elemental analysis, 1H NMR, and IR spectral data. The preliminary bioassay results showed that α-phenyl-sul-fonylcyclododecanone oxime 2,4-dichlorophenoxy acetate (8p) had inhibition ratio 100% and 80.07% against Digitaria sanguinalis Scop., and 100% and 88.70% against Abutilon theophrasti Medic. at concentrations of 100 and 1 mg/L.

初步生物活性测定结果显示，部分化合物具有一定的除草活性，如α-苯磺酰基环十二酮肟-2，4-二氯苯氧乙酸酯(8p)在浓度为100和1 mg/L时对马唐的抑制率分别为100%和80.07%；对苘麻的抑制率分别为100%和88.70%。

It's soil, however, after its problems, the crop was phytotoxicity very concern, according to chlorine sulfonylurea herbicide easily after long after stubbly maize produced in the problem, residual phytotoxicity chose herbicides security agents Ⅰ compounds, N - methylene chloride acetyl groups - 5-2 - diethyl - propyl arene pbo.

它的土壤残留问题及其对后茬作物的药害影响，一直是人们极为关注的问题，故本文针对除草剂氯磺隆使用后易对后茬玉米产生残留药害的问题，选择了除草剂安全剂化合物Ⅰ：N-二氯乙酰基-5-乙基-2-丙基-1，3-恶唑烷。

It is poisonous to other vertebrates, especially fish, and is stored in the fatty tissue of animals as sublethal amounts of the less toxic DDE.

对其他的脊椎动物，特别是鱼类具有毒性，会以毒性较低之二氯二苯化合物型态积存在动物的脂肪组织中。

In this paper, eleven benzothiazole derivatives such as N, N, N′, N′-tetra (2-benzothiazolyl) methyl-1, 2-ethanediamine,(2-benzothiazolyl) methyloxy benzene, 2,4-dichloro( 2-benzothiazolyl) methyloxy benzene, O-di(2-benzothiazolyl) methyloxybenzene, P-di(2-benzothiazolyl) methyloxy benzene, 3-(2-benzothiazolyl) pyridine were synthesized by means of conventional method or MWI technology and a single crystal of di (2-benzothiazolyl ) methyl ether was obtained.

本文分别用常规合成法和微波辐射法合成了N，N，N′， N′-四(2-苯并噻唑基)甲基-1，2-乙二胺、(2-苯并噻唑基)甲氧基苯、2，4-二氯-(2-苯并噻唑基)甲氧基苯、邻-二(2-苯并噻唑基)甲氧基苯、对-二(2-苯并噻唑基)甲氧基苯、3-(2-苯并噻唑基)吡啶等11 个苯并噻唑类化合物并得到二(2-苯并噻唑基)甲基醚单晶。

Amino-6-nitrobenzodifuroxan was prepared through a three-step reaction from starting material 3, 5-dinitrobenzoic acid:(1)3, 5-dinitroaniline (1) was synthesized from the reaction of DNBA and hydrazoic acid in inert solvent 1, 2-dichioroethane through Schmidt rearrangement with yield of 89.6%;(2) 1 was subjected to nitration to prepare pentanitroaniline (2) with yield of 51.1%;(3) The title compound was prepared from 2 and sodium azide in acetic acid through denitrogenation and then Schmidt rearrangement with yield of 86.8%, m.p.204℃～206℃.

以3，5-二硝基苯甲酸为原料经过3步反应合成了7-氨基6-硝基苯并二氧化吠咱：第1步反应，在二氯乙烷惰性溶剂中，DNBA与叠氮酸反应并发生Schmidt重排反应生成3，5-二硝基苯胺(1)，产率89.6%；第2步反应，1在含100%硫酸的硝硫混酸中硝化生成五硝基苯胺(2)，产率51.1%；第3步反应，2与叠氮酸反应，不经分离直接进行热解脱氮、Schmidt重排反应，得到目标化合物， m.p.204℃~ 206℃，产率86.8%。

In order to find highly active pesticide, three series of 5--12-substituent-benzo phenanthridine derivatives were synthesized through the reaction of 2-methylbenzonitrile with dif-ferent aldehyde, and further dehydration with DDQ or N-methylation with NaH and CH3I, respectively.

为了寻找新的高活性农药，利用2-甲基苯甲腈与不同的醛反应，再通过2，3-二氯－5，6-二氰基－1，4-苯醌脱氢或NaH和CH3I氮甲基化，合成了3个系列共18个5-取代氨基－12-取代苯并菲啶衍生物，其中15个是未见文献报道的化合物。

A series of novel polys: poly, poly and their copolymer poly were synthesized at high temperature by nucleophilic polycondensation of bisphenol 4 (3 phenyl 4 hydroxyphenyl) 2,3 phthalazin 1 one with activated difluorodiphenylketone, dichlorodiphenylsulfone and both together.

将苯基取代类双酚化合物 4-(3 -苯基-4-羟基苯基)-2 ，3 -二氮杂萘-1 -酮与活性双卤单体如 4，4 -二氟二苯酮、4，4 -二氯二苯砜进行高温缩聚反应，合成了高分子量的新型苯基取代杂萘联苯型聚芳醚材料；用1 H NMR、FT-IR表征了类双酚单体及聚合物的结构。

Increasing number of chemicals have been found to be estrogenic or possessing other endocrine disruptive effects. Among them are some organochlorine pesticides and other organochlorine chemicals, such as DDT and its metabolite p, p'-DDE, kepone, toxaphene, dieldrin, and PCBs, dioxins, and furans.

现在已经有越来越多的化学物被发现具有雌激素样作用或其它内分泌干扰作用，其中有相当一部分为有机氯农药或其他有机氯化合物，如滴滴涕及其代谢产物p，p'-DDE、开蓬、毒杀芬、狄氏剂以及多氯联苯、二恶英和呋喃类等。

Through the different concentrations of security agents on GSH conten, GST activity, ALS activity in different degree, basic verifies the methylene chloride acetyl groups were evil to reduce CFC sulfonylurea lung damage mechanism of corn.

通过不同浓度的安全剂对GSH含量，GST活性，ALS活性均有不同程度的促进作用，基本验证了二氯乙酰基恶唑烷类化合物减轻氯磺隆对玉米伤害的作用机理。我只有这些分数了，谢谢英语大侠了！

An important intermidiate 2-butyl-4-chloro-5-(4-bromomethyl phenoxy) pyridazinone 3 was first obtained from 4,5-dichloropyridazinone using two different methods. Compounds 4a～4l were synthesized by the reaction of 3 with different oximes.

从2-叔丁基-4，5-二氯哒嗪酮出发，以两种方法合成了中间体2-叔丁基-4-氯-5-(4-溴甲基苯氧)哒嗪酮(3)。3与肟反应合成了含哒嗪酮的苄基肟醚类化合物4a～4l。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。