甲基溴

Seven of them have not been reported.Their structures were confirmed by IR,~1HNMR,MS,and element analysis. 4.Meanwhile,the green methylation procedure of imides was developed by using dimethyl carbonate as methylation reagent.A series of imides,for example,phthalimide,3,4-dibromo-maleimide and succincide were used for substrates.The effects of DABCO(1,4-diazabicyclo [2.2.2]octane)and DBU(1,8-diazabicyclo[5.4.0]undec-7-ene)as a catalyst in this kind of reactions were investigated.2-Bromo-3-(1-methylindolyl-3-yl)-1-methyl-1H-pyrrole-2,5-dione was prepared by using dimethyl carbonate,which further expanded the use of dimethyl carbonate,as a green agent in organic synthesis.

在以硫酸二甲酯为甲基化试剂对3，4-二溴马来酰亚胺进行N-甲基化反应合成3，4-二溴-N-甲基马来酰亚胺的同时，以碳酸二甲酯为甲基化试剂，对3，4-二溴马来酰亚胺、邻苯二甲酰亚胺、琥珀酰亚胺等酰亚胺类化合物的N-甲基化反应进行了研究；考察了1，4-二氮杂双环[2.2.2]辛烷，1，8-二氮杂双环[5.4.0]十一碳-7-烯、碳酸钾和四丁基溴化铵等作为催化剂对碳酸二甲酯N-甲基化反应的反应时间和收率等的影响，并应用碳酸二甲酯为甲基化试剂，合成了N-甲基-3-溴-4-(1-甲基-吲哚-3)-马来酰亚胺。

The results of biological tests indicated that, at 25 g/mL, 1-(4-bromo-3-ethyl-1-methyl-pyrazol-5'-ylcarbonyl-4-(2-nitrophenyl) semicarbazide (4d) showed inhibitory activities (52.6%) against Pyricularia oryzae. 1-(4-bromo-3-ethyl-1-methyl-pyrazol-5'-ylcarbonyl)-4-(3-chlorophenyl) semicarbazide (4j), 1-(4-bromo-3-ethyl-1-methyl-pyrazol-5'-ylcarbonyl)-4-(2,4-dimethylphenyl) semicarbazide (4k), 1-(4-bromo-3-ethyl-1-methyl-pyrazol-5'-ylcarbonyl)-4-(3,4-dimethyiphenyl) semicarbazide (41) and 1-(4-bromo-3-ethy-1-methyl-pyrazo1-5'-ylcarbonyl)-4-(2,4-difluorophenyl) semicarbazide (4m) showed inhibitory activities (45.6%) against Pyricularia oryzae, repestively.

初步生物活性实验结果表明，在25μg/mL浓度下，1-（1-甲基－3-乙基－4-溴－5-吡唑甲酰基）－4-（2-硝基苯基）氨基脲(4d)对水稻稻瘟病菌Pyricularia oryzae抑制活性达到52.6%；1-1-甲基－3-乙基－4-溴－5-吡唑甲酰基）－4-（3-氯苯基）氨基脲(4j，1-（1-甲基－3-乙基－4-溴－5-吡唑甲酰基）－4-（2，4-二甲基苯基）氨基脲(4k)，1-（1-甲基－3-乙基－4-溴－5-比唑甲酰基）－4-（3，4-二甲基苯基）氨基脲(41)和1-（1-甲基－3-乙基－4-溴－5-吡唑甲酰基）－4-（2，4-二氟苯基）氨基服(4m)对水稻稻瘟病菌Pyricularia oryzae抑制活性达到45.6%。

Huapai products:pchlorophenol,ochlorophenol,2,4dichlorophenol,2,6dichlorophenol,2,4,5trichlorophenol,2,4,6trichlorophenol,4chloro2benzyl phenol,pbromophenol,2,4,6tribromophenol,1chloro4(1,1dimethyl ethyl) benzene ether,3bromoanisole,mbromofluorobenzene,2tetra hydrofuran,αbromo4chloro acetophenone,αbromo4methoxy acetophenone,4chloro benzophenone,4chloro2methylaniline,n(2hydroxyethyl)ethane diamine; n(2aminoethyl)ethanolamine,2,3dibromopropionyl chloride,4bromo benzene sulphonyl chloride,terephthaloyl chloride,isophthaloyl chloride,nchlorosuccinimide,nbromosuccinimide,pchloranil;tetrachloro1,4benzoquinone,5chloroisatin.

华派公司产品：对氯苯酚，邻氯苯酚，2，4二氯苯酚，2，6二氯苯酚，2，4，5三氯苯酚，2，4，6三氯苯酚，4氯2苄基苯酚，对溴苯酚，2，4，6三溴苯酚，对氯苯基叔丁基醚，间溴苯甲醚，间溴氟苯，α溴甲基四氢呋喃，α溴代4氯苯乙酮，α溴4甲氧基苯乙酮，4氯二苯甲酮，4氯2甲基苯胺，N(2羟乙基)乙二胺， 2，3二溴丙酰氯，对溴苯磺酰氯，对苯二甲酰氯，间苯二甲酰氯，N氯代丁二酰亚胺，N溴代丁二酰亚胺，四氯苯醌，5氯靛红。

Other nations, however, including Austria, Finland, and Sweden have eliminated their major use of methyl bromide.

而实际上包括澳大利亚，芬兰，瑞典在内的其他国家已经停止了对甲基溴化物的主要使用。

Currently commonly adopted soil steaming method using such chemicals as methyl bromide is harmful to human health and ecological environment.

目前普遍采用的甲基溴等化学试剂熏蒸方法对人类健康和自然生态环境有害，为解决这一问题，对微波消毒土壤进行了探索。

The gradual promotion of methyl bromide substitutes,training and regulatory needs.

逐步发展甲基溴化物替代物，培训和定期要求。

Methyl bromide substitutes for weed control in annual and perennial crops.

甲基溴化物替代物对每年和多年生杂草的控制。

This device can he used instead of soil steaming using such chemicals as methyl bromide and other physical ways to sterilize soil.

采用自动控温的微波消毒温室土壤装置消毒土壤是替代甲基溴等化学试剂熏蒸及其他物理消毒土壤的较好方法。

It is completely natural that the release ofvideo card geForce 8800 GTS with320 mbwill cause transpositions on the market for graphic card.

这是完全自然的释放录象卡与电信霸主8800320甲基溴对市场造成移位图形卡。

Kerch, Ukraine, on the west side of Kerch Strait, recorded sustained winds of 45 mph and a minimum pressure of 988 mb as the storm blew through.

刻赤，乌克兰，对海峡西岸的刻赤海峡，录得持续风速45英里每小时和最低限度的压力， 988甲基溴作为风暴4.62点。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。