allenes

either in media of liquid allenes or in solid polymers, the excitation ( absorp-tion) and emission wavelength of 7-diethylamino-4-methylcoumarin ( damc) are bathochromic with the polarity of media.

7-二乙氨基-4-甲基香豆素（DAMC）在液态烯烃和固态聚合物介质中的激发（吸收）波长和发射波长随介质的极性增大而红移。

the radical reaction of allenes and the nucleophilic addition reaction of electron-deficient allenes

联烯的自由基反应和缺电子联烯的亲核加成反应

allenes are a class of compounds containing a cumulative diene functionality, which would be optically active when the two substituent groups on both of the terminal carbons of allene are different from each other.

联烯是一类含1,2-累积二烯官能团的化合物，其末端碳原子上取代基两两不同时就具有了轴手性。

allenes, which contain the functional group of 1,2-propadiene, are highly reactive.

联烯是含有1,2丙二烯官能团的重要化合物，具有很高的反应活性。

with the recent development in this area, allenes are playing more and more important roles in organic synthesis.

随着有机化学的发展，联烯在有机合成中发挥着越来越重要的作用。

studies on the addition reactions of allenes

联烯的一些加成反应研究

allenic sulfoxides and 1,2-allenic sulfones are important sulfur-containing allenes.

1,2联烯亚砜和1,2联烯砜是重要的含硫联烯化合物。