alkene

1.The benzene ring and alkene structural group are much more stable than structural group of sulfoacid for the carbonifying process of polystyrene.

在碳化过程中，聚苯乙阳离交换树脂的苯环结构和基团比磺酸基团稳定。

2.hydroxyl ketene dithioacetals possessing an allylalcohol moiety, as well as terminal bisalkylthio substituted alkene are a class of important intermediates in organic synthesis.

羟基二硫缩酮类化合物不仅含有丙基醇结构单元,而且双键端位被双烷硫基取,有机合成中的一类重要的有机中间体。