n.二氯

Using Chapman rearrangement to prepare 2, 6?dichloro?diphenylamine? 應(yīng)用Chapman重排制備2,6-二氯二苯胺

How many dichloro derivatives of anthracene are possible Give their names. 答:蒽有多少種二氯衍生物寫出他們的名字.

Polychlorobiphenyls in dye intermediate 2,6 _ dichloro _ 4 _ nitroaniline were analyzed by GC-MS in SIM method. 用氣相色譜-質(zhì)譜聯(lián)用儀,采用選擇離子的方法對染料中間體2,6_二氯_4_硝基苯胺中的多氯聯(lián)苯進(jìn)行分析。

Six series of aryloxy pyridazines derivatives have been synthesized starting from 3,6 dichloro pyradizine. 以3,6-二氯噠嗪為原料,合成了6類芳氧基噠嗪類衍生物,研究了它們的合成方法,并測定了所得產(chǎn)物的除草活性。

The yield of dichloro compound is over 78%.The total yield of 2, 6-dichlorotoluene is over 60% and the purity of product is more than 99.0%. 該工藝氯化采用復(fù)合催化劑，無需用任何溶劑，二氯化物收率大于78%25,2,6-二氯甲苯總收率可達(dá)60%25，純度大于99%25。

n.[化]二氯甲烷