Processes for Production of 2-Bromo-2,2-Difluoroethanol and 2-(Alkylcarbonyloxy)-1,1-Difluoroethanesulfonic Acid Salt
申请人:Jodry Jonathan Joachim
公开号:US20110015431A1
公开(公告)日:2011-01-20
Disclosed is a process for producing 2-bromo-2,2-difluoroethanol, which comprises reducing a bromodifluoroacetic acid derivative represented by the formula [1] by using an ate hydride complex as a reducing agent. 2-Bromo-2,2-difluoroethanol thus produced can be used as the starting material to carry out the esterification step, the sulfination step and the oxidation step in this order, thereby producing a 2-alkylcarbonyloxy-1,1-difluoroethanesulfonic acid salt, wherein A represents a substituted or unsubstituted linear, branched or cyclic alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 15 carbon atoms, a heteroaryloxy group having 4 to 15 carbon atoms, or a halogen atom.
揭示了一种生产2-溴-2,2-二氟乙醇的方法,包括使用醇盐氢化物复合物作为还原剂,通过还原由式[1]表示的溴二氟乙酸衍生物来实现。因此生产的2-溴-2,2-二氟乙醇可用作依次进行酯化步骤、磺化步骤和氧化步骤的起始物质,从而产生2-烷基羰氧基-1,1-二氟乙烷磺酸盐,其中A代表具有1至20个碳原子的取代或未取代的线性、支链或环烷氧基团,具有6至15个碳原子的取代或未取代的芳氧基团,具有4至15个碳原子的杂芳氧基团,或卤素原子。