氢是有机化合物中的一个非常重要的化学组成元素,在人类目前已知的900多万种有机化合物中,氢作为一个核心的化学元素几乎存在于每一个有机化合物中,所以有机氢化学(即涉及有机化合物中氢原子化学反应的化学)应该是有机化学的一个中心研究领域.由于有机化合物通常是由碳、氢、氧、氮、硫、卤素等非金属元素组成,而氢原子的电负性(2.2)一般小于碳(2.5)、氧(3.4)、氮(3.0)、硫 Hydrogen is a very important chemical element in organic compounds. In more than 9 million kinds of organic compounds known to man nowadays, hydrogen is a chemical element in almost every organic compound. Therefore, organic hydrogen chemistry Chemistry involving hydrogen atoms in organic compounds) should be a central area of ​​research in organic chemistry.As organic compounds are usually composed of non-metallic elements such as carbon, hydrogen, oxygen, nitrogen, sulfur, and halogens, the electronegativity of hydrogen atoms Sex (2.2) is generally less than carbon (2.5), oxygen (3.4), nitrogen (3.0), sulfur