heteroatom

1.In the whole process of forming hydrocarbon, there exist the joining and removal of hydrogen or oxygen atom and heteroatom from the beginning to end.

人所熟知的胡萝卜烷由胡萝卜素加氢构成,在转化中需要消耗大量的氢,因而整过程是非常典型的氧化还原反应。