尤其是用二氯亚砜、浓盐酸等做卤代试剂时，对环境污染更加严重。
Especially, dichlorosulfoxide, concentrated hydrochloric acid and other halogenated reagents have caused severe damage to the environment.
用二氯亚砜将萘普生酰氯化，在氮气保护下与脱镁叶绿酸交联，以硅胶柱层析分离产物。
Naproxin was treated by thionyl chloride, then conjugated to Phaeophorbide under protection of N2. The compound was purified by silica gel column.
评述了氯磺酸法、三氧化硫法、二氧化硫法、联产法等氯化亚砜合成方法及其采用这些合成方法的生产企业情况；
Synthesis methods of thionyl chloride such as HSO 3Cl method, SO 2 method, SO 3 method, co production method and enterprises adopting above methods are evaluated.
样品溶解在二甲基亚砜中，以正离子方式记录谱图，结果发现除产生一个失去氯原子的分子离子峰外，没有任何碎片峰。
The samples were dissolved in dimethyl sulfoxide (DMSO) and the data were recorded by positive ion mode. No any other fragment was found except for little molecular ion which loses a chlorine atom.
前言：以邻苯二酚和二氯甲烷为原料，二甲亚砜为溶剂，在碱性条件下合成1，2-亚甲二氧基苯，产品收率达到73.4%；
2-(methylenedioxy)benzene is synthesized by using catechol, dichloromethane and dimethylsulfoxide with the condition of alkali and normal pressure. Overall yield of the process is 73.4%.
前言：以邻苯二酚和二氯甲烷为原料，二甲亚砜为溶剂，在碱性条件下合成1，2-亚甲二氧基苯，产品收率达到73.4%；
2-(methylenedioxy)benzene is synthesized by using catechol, dichloromethane and dimethylsulfoxide with the condition of alkali and normal pressure. Overall yield of the process is 73.4%.
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