Direct Difluoromethylenation of Carbonyl Compounds by Using TMSCF<sub>3</sub>: The Right Conditions
作者:Sankarganesh Krishnamoorthy、Jotheeswari Kothandaraman、Jacqueline Saldana、G. K. Surya Prakash
DOI:10.1002/ejoc.201601038
日期:2016.10
A deoxygenative difluoromethylenation of carbonyl compounds has been developed by using readily available, inexpensive trifluoromethyltrimethylsilane, LiI, and PPh3. The presence of the Li+ ion prevents the unproductive exhaustion of trifluoromethyltrimethylsilane (TMSCF3) by keeping the soluble free fluoride concentration in the reaction medium under control. The strategy of combining solvents to
已经通过使用容易获得的廉价三氟甲基三甲基硅烷、LiI 和 PPh3 开发了羰基化合物的脱氧二氟亚甲基化。Li+ 离子的存在通过控制反应介质中的可溶性游离氟化物浓度来防止三氟甲基三甲基硅烷 (TMSCF3) 的非生产性消耗。公开了组合溶剂以提高反应性从而降低反应温度和时间的策略。