TFDA is readily prepared from the reaction of fluorosulfonyldifluoroacetic acid with trimethylsilyl chloride, and it is a very effective and efficient source of difluorocarbene for use in addition reactions to alkenes of a broad scope of reactivities. Acid-sensitive substrates may require an additional purification step involving treatment of the distilled TFDA with sufficient Et3N to remove the acid
TFDA很容易从
氟磺酰基
二氟乙酸与三甲基甲
硅烷基
氯的反应中制备,它是非常有效的
二氟卡宾来源,可用于与反应性范围很广的烯烃加成反应。对酸敏感的底物可能需要额外的纯化步骤,包括用足够的Et 3 N处理蒸馏过的TFDA以除去酸杂质。还可以制备其他三烷基甲
硅烷基
氟磺酰基
二氟乙酸酯,并且发现它们具有类似于TFDA的反应性。三乙基衍
生物TEFDA更易于以纯净状态制备,并且具有与TFDA相似的反应性。因此,它可能被证明是一种优良的试剂。