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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. 研究了在同一反應器中由三聚氯氰經(jīng)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%. 研究了在同一反應器中由三聚氯氰經(jīng)氨化、甲胺基化合成2氨基4甲胺基6氯三嗪的方法。確定其優(yōu)惠反應條件,產(chǎn)品收率可高達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-氯甲苯為原料;經(jīng)過(guò)氧化;硝化;縮合;還原反應;制成有機顏料中間體N(3’氨基4’氯代)苯甲?；?甲基3氯代苯胺.;對影響反應的諸因素進(jìn)行了討論;產(chǎn)品總收率為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%. 以羥基丁酮為原料,經(jīng)?；?、環(huán)合等步驟合成醫藥中間體4氯4,5二甲基1,3二氧雜環(huán)戊烷2酮,合成收率達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;三乙胺動(dòng)力學(xué)控制反應;合成;
- Keywords dimethoxy 4 chloro N acetoacetyl aniline;acetoacetanization;diketene; 二甲氧基-4-氯-N-乙?；阴１桨?雙乙烯酮;乙酰乙?；?
- Subtract 3 from 7 and you have 4. 七減三得四。
- Can you count backwards from 5? Yes, 5, 4, 3, 2, 1. 你能從5倒著(zhù)數嗎?可以，。
- Keywords alkylation chloration 2;5 Dimethoxyl 4 Chloro Nitrobenzene; 烷基化反應;氯化反應;2`5-二甲氧基-4-氯-硝基苯;
- He 1 2 in Suzhou , but he 3 4 in Shanghai now. 他出生在蘇州，但現在居住在上海。
- Prepare for dropoff...Countdown, 5, 4, 3, 2, 1. 準備跳傘...倒計時(shí)：5，4，3，2，1。
- Keywords cyclophane;2;6 Bis（imidazolylmethyl） 4 chloro phenol;dibromide;synthesis; 翁型環(huán)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,總數是十二。
- A control program routine that accomplishes 1, 2, 3, or 4. 完成上述1,2,3或4動(dòng)作的控制例行程序。
- Keywords WT5”BZ]4 Chloro benzoyl sulfoxylate;Transition state;Reaction pathway; 次硫酸二對氯芐酯;過(guò)渡態(tài);反應途徑;
- Visiting time in this hospital is from 4 to 6. 這家醫院的探望時(shí)間是從4點(diǎn)到6點(diǎn)。
- Let it be 4:25 tomorrow afternoon. 就定明天下午4點(diǎn)25分吧。
- The score in the football game was 4 - 1. 足球比賽的比分是四比一。
- A monthly is more economical than 4 weeklies. 一張月票比四張周票上算。
- He is remanded on his own recognizance of$4,000. 在保證付款4,000美元后他被還押(以后再出庭)。
