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- The effect of the solvent on bromination of 6 methoxy 2 acyl naphthalene and 2 methoxyl naphthalene with 1,3 dibromo 5,5 dimethyl hydantoin was studied. 考察了在不同极性溶剂中以 1 ,3 二溴 5,5 二甲基海因作溴化剂对溴化 6 甲氧基 2 酰基萘反应的影响。
- The bromination of 6 methoxy 2 propionylnaphthalene with 1,3 dibromo 5,5 dimethylhydantoin proceeded smoothly, quickly, and gave 5 bromo 6 methoxy 2 propionylnaphthalene with 98.59% yield in alcohol. 室温下;6-甲氧基-2-丙酰基萘和1;3-二溴-5;5-二甲基海因的溴化反应在醇溶剂中;反应速度快、转化率高;生成5-溴-6-甲氧基-2-丙酰基萘的收率高(98.;59
- Keywords ? (6 methoxy benzothiazolyl) azo] 1;8 dihydroxynaphthalene 3;6 disulfonic acid(CH 3O BTCA);spectrophotometry;titanium; 甲氧基-苯并噻唑)-偶氮]-1`8-二羟基萘-3`6-二磺酸;分光光度法;钛;
- Keywords bromination;propiophenone;3 chloro propiophenone;6 methoxy 2 propionylnaphthane;6 methoxy 2 acetylnaphthane;4 methoxyacetophenone;acetophenone;cupric bromide; 溴化反应;苯丙酮;间-氯苯丙酮;6-甲氧基-2-丙酰基萘;6-甲氧基-2-乙酰基萘;对-甲氧基苯乙酮;苯乙酮;溴化铜;
- There is no parking between 9 am and 6 pm. 上午9时至下午6时禁止停放机动车辆。
- The class needs a minimum of 6 pupils to continue. 这个班最低限度要六个学生才可以继续办下去。
- If you subtract 2 from 8, you get 6. 8减去2是6。
- 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。
- The library is open from 9 to 6. 那个图书馆从上午9点到下午6点开放。
- It's due in (ie It should arrive) at 6 o'clock. 这班车应在6点钟到达。
- The builder cost out the job at$6,500. 营造商给这活儿估价为6,500美元。
- The doors were numbered 2,4, 6 and 8. 这些门编为2、 4、 6、 8号。
- She holds her surgery on Fridays at 6 pm. 她星期五下午6时接待选民。
- This tree has a circumference of 6 feet. 这棵树周长六英尺。
- The characteristic of the logarithm 6.3214 is 6. 对数6.;3214的首数是6。
- He can pull in over£6,000 a year at that factory. 他在那家工厂一年可挣6千多英镑。
- The salary of a hireling is 6 pounds per day. 雇工一天的工资是六镑。
- Would 6: 30 be suitable for you? 六点半对您合适吗?
- One of the funniest episodes in the book occurs in chapter 6. 书中最有趣的情节是在第6章。
- Methoxy 1 groups are split off with boiling HI and converted to ?? 甲氧基用沸腾的碘氢酸分解,使甲氧基脱落并转为甲基碘。