This type of reaction has signicant advantages, the alkyne proceeds the coupling reaction with the halogen atom as the leaving group.

卤原子作为炔烃三键活化基团和定位基，炔烃三键发生亲电加成反应；

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Conclusion The 3, 5-dinitrobenzoyl group was found to be a good leaving group at the anomeric position and O-glucopyranosides and oligosaccharides were stereoselectively synthesized in good yield.

结论3，5 二硝基苯甲酰氧基作为良好的糖端基离去基用于寡糖的合成，具有反应条件温和、收率较高、立体选择性好的特点。

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One advantage of a conglomerate is that it allows the ambitious to graduate from one company to another without leaving the group.

大型联合企业的一个优势就是允许那些雄心勃勃的人不需要离开集团就能在不同的公司任职。

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The four band members continued to work together after leaving Dizzy's group in the late nineteen forties.

VOA: special.2009.03.01

McFadden was an original member of girl group Atomic Kitten and has appeared in various television shows since leaving the group in 2001.

BBC: NEWS | Entertainment | McFadden 'proud' of jungle crown

Anderson died in a plane crash in 1990, leaving the group directionless.

FORBES: Magazine Article

Other assets yet to be identified will also be sold, leaving the group with core holdings in banking, telecommunications, property and manufacturing.

CNN: ASIA ON HIS MIND