Excellent selectivity in alkyl transfer was noted in the sequence of PhCH 2 > primary alkyl > secondary alkyl.

  • 季铵盐中烷基的转移具有较好的选择性,其优先顺序为:苄基>伯烷基>仲烷基.
  • 来源:互联网摘选更新时间:2025-01-19 23:06:55

  • 重点词汇
  • inprep. 在里面;在(某范围或空间内的)某一点;在(某物的形体或范围)中;在…内;在…中;进入
  • excellentadj.极好的;太好了;杰出的;非凡的;(用以表示愉快或赞同)好极了,妙极了
  • sequencen.[数]数列,序列;顺序;连续;片断插曲;
  • primaryadj.首要的;初级的;初等教育的;
  • secondaryadj.次要的;辅助的;继发的;中学的;
  • alkyl transfer烷基转移;
  • alkyln.烷基,烃基;
  • ofprep. 关于;属于…的;由…制成;
  • wasv. 用来表示某人或某物即主语本身,用来表示某人或某物属于某一群体或有某种性质( be的过去式 );在,存在;不受干扰;
  • selectivityn.选择性;专一性;
  • 相关例句
1、

I was all of a sweat from a long run in the heat.

在高温下,长跑之后我一身大汗.

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2、

He was all of a sweat from his nightmare.

他从他自己的噩梦中惊醒.

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3、

I was all of a sweat before the exam.

我临考前急得不得了.

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4、

She was all of a sweat.

她一身大汗.

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5、

She is always all of a sweat before the exam.

她临考前总是急得不得了.

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6、

The old man was all of a shake at the news.

听到这个消息,老人浑身直发抖.

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7、

They were watching the match when all of a moment it began raining heavily.

他们正在观看比赛,突然之间天下起大雨来了.

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8、

She was a maid of all work.

她是个什么活儿都干的女仆.

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9、

People on the Hill would fall all over themselves getting away from you.

国会山的人对你会惟恐躲避不及.

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10、

We looked for him all over the shop.

我们到处找他.

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11、

His clothes lay all over the shop.

他衣服扔得到处都是.

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12、

His clothes were all over the shop.

他的衣服乱七八糟地放着.

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13、

The furniture was all over the shop after the wild party.

狂野的宴会之后,家具被弄得很凌乱.

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14、

Don't leave your things all over the shop.

不要把你的东西到处乱放.

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15、

Anyway, they would hope all for the best.

不管怎样, 他们完全出于好意.

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16、

It was at the time hard to realize how it could be all for the best.

当时很难想到怎么会有这么好的结果.

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17、

He lived to a great age before he finally went the way of all flesh.

他活了好大的年纪才离开人世.

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18、

Now we are agreed in all respects, we can go ahead with the contract formalities.

现在我们在各方面都已达成共识, 可以进入签约手续.

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19、

We started with eight nodes equal in all respects except their fitness values.

我们以八个节点为起始,他们除了适合值不同外其他各个方面均相同.

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20、

This essay is admirable in all respects.

这篇文章在各方面都很值得欣赏.

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