查询词典 witting

The effects of above-mentionedconditions on alkylene reaction are studied to obtain the optimum reactive conditionsby orthogonal experiments having seven factors and three levels. GCLE is chosen as material to prepare 7-phenyl acetamideyl vinyl cephalkyl acidp-methoxy benyl eatsr in the experiment. The process is as follow: GCLE reacts withiodide in solvent, and produce 3-iodid, then reacts with PPh_3 to produce Witting agent,and reacts with HCHO to produce 7-phenyl acetamideyl vinyl cephalkyl acid p-methoxy benyl eatsr in alkaline conditions.

试验选用GCLE作为原料制备7-苯乙酰氨基-3-乙烯基头孢烷酸对甲氧苄酯，反应过程如下：GCLE与碘化物、PPh3在溶剂中反应生成3位膦盐，在碱性条件下生成Wittig试剂再与HCHO反应生成7-苯乙酰氨基-3-乙烯基头孢烷酸对甲氧苄酯。

We gained the ethynylferrocene in high yield by the the reaction of triphenylphosphine with chloroform or bromoform in the presence of KOBu~t to give witting reagent, which reacted with formylferrocene and then followed by n-butyllithium dehydrohalogenation.

在本论文的第二部分，我们用三苯基磷与溴仿或氯仿在叔丁醇钾作用下，制得三苯基磷甲叉烯，然后与二茂铁甲醛反应，得到二氯取代烯烃，在正丁基锂作用下得到二茂铁乙炔。

But, be asked to fell to change 4 provinces continuously by evil-minded boss when me after 8 city, the journey that discovers me suddenly however how by royal and witting?

可是，当我被恶毒的老板要求下连续换了4省8市后，却突然发现我的行程怎么被盛大知晓了？

Although the writer is out at the elbow, he is still keeping witting.

那个作家虽然已经穷困潦倒了，但他还是继续写作。

Don 't waste your time on a man/woman,who isnt witting to waste their time on you.

不要为那些不愿在你身上花费时间的人而浪费你的时间。

But although say, we to very difficult witting more factors that affect a rank.

但尽管说，我们对于很难知晓更多的影响排名的因素。

I am A Kenyan aged 15(BORN ;6/4/1993)with a strong interest in article witting.

我是肯尼亚的15岁（出生1993年6月4日），以浓厚的兴趣witting条。

Interestingly most of the witting participants also believe that they are doing good, just as many brutal dictators throughout history have done.

有趣的，大部分的witting与会者还认为，他们正在做的很好，正如许多残暴的独裁者，在整个历史上所采取的措施。

All this costs money, which in turn must be authorized by Congress, or at least a by few witting members of the intelligence committees.

这一切都需要花钱，这反过来又必须由国会授权的，或者至少是由数witting成员的情报委员会。

The marriage law in existing and basic law is witting rate is topIn existing and basic law, the public is witting rate is top is " marriage law ".

现有基本法律中婚姻法知晓率最高在现有基本法律中，公众知晓率最高的是《婚姻法》。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。