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- The synthesis of 2 amino 4 methylamino 6 chloro 1,3,5 triazine by amination and methylamination from cyanuric chloride in one reaction system was described. 研究了在同一反应器中由三聚氯氰经氨化、甲胺基化合成2氨基4甲胺基6氯三嗪的方法。
- The synthesis of 2 amino 4 methylamino 6 chloro 1,3,5 triazine by amination and methylamination from cyanuric chloride in one reaction system was described. The results showed that the yield was 93%. 研究了在同一反应器中由三聚氯氰经氨化、甲胺基化合成2氨基4甲胺基6氯三嗪的方法。确定其优惠反应条件,产品收率可高达93%25。
- By oxidation,nitration,condensation,reduction,a organic pigment intermidiate N (3' amino 4' chloro)benzoyl 2 methyl 3 chloroaniline was prepared,through using 4 chloromethylbenzene as first material. 以4-氯甲苯为原料;经过氧化;硝化;缩合;还原反应;制成有机颜料中间体N(3’氨基4’氯代)苯甲酰基2甲基3氯代苯胺.;对影响反应的诸因素进行了讨论;产品总收率为57
- 4 Chloro 4,5 dimethyl 1,3 dioxolan 2 one was synthesized from 3 hydroxy 2 butanone by acylation and cyclization, the yield was above 86%. 以羟基丁酮为原料,经酰化、环合等步骤合成医药中间体4氯4,5二甲基1,3二氧杂环戊烷2酮,合成收率达86%25以上
- Keywords cinnamyl alcohol;3 chloro 1 phenylpropene;chlorination;kinetic control reaction;triethylamine; 肉桂醇;3-氯-1-苯丙烯;三乙胺动力学控制反应;合成;
- Keywords dimethoxy 4 chloro N acetoacetyl aniline;acetoacetanization;diketene; 二甲氧基-4-氯-N-乙酰基乙酰苯胺;双乙烯酮;乙酰乙酰化;
- Subtract 3 from 7 and you have 4. 七减三得四。
- Can you count backwards from 5? Yes, 5, 4, 3, 2, 1. 你能从5倒着数吗?可以，。
- Keywords alkylation chloration 2;5 Dimethoxyl 4 Chloro Nitrobenzene; 烷基化反应;氯化反应;2`5-二甲氧基-4-氯-硝基苯;
- He 1 2 in Suzhou , but he 3 4 in Shanghai now. 他出生在苏州，但现在居住在上海。
- Prepare for dropoff...Countdown, 5, 4, 3, 2, 1. 准备跳伞...倒计时：5，4，3，2，1。
- Keywords cyclophane;2;6 Bis（imidazolylmethyl） 4 chloro phenol;dibromide;synthesis; 翁型环番;2.;6-二（咪唑甲基）-4-氯苯酚;二溴化合物;合成;
- Add up 3, 4 and 5 and you'll get 12. 把三,四,五相加,总数是十二。
- A control program routine that accomplishes 1, 2, 3, or 4. 完成上述1,2,3或4动作的控制例行程序。
- Keywords WT5”BZ]4 Chloro benzoyl sulfoxylate;Transition state;Reaction pathway; 次硫酸二对氯苄酯;过渡态;反应途径;
- Visiting time in this hospital is from 4 to 6. 这家医院的探望时间是从4点到6点。
- Let it be 4:25 tomorrow afternoon. 就定明天下午4点25分吧。
- The score in the football game was 4 - 1. 足球比赛的比分是四比一。
- A monthly is more economical than 4 weeklies. 一张月票比四张周票上算。
- He is remanded on his own recognizance of$4,000. 在保证付款4,000美元后他被还押(以后再出庭)。
