Designer HF-based fluorination reagent: highly regioselective synthesis of fluoroalkenes and gem-difluoromethylene compounds from alkynes.

Designer HF-based fluorination reagent: highly regioselective synthesis of fluoroalkenes and gem-difluoromethylene compounds from alkynes.
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DOI:
10.1021/ja508369z
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发表时间:
2014-10-15
影响因子:
15
通讯作者:
Xu, Bo
Xu, Bo
中科院分区:
化学1区
文献类型:
--
作者:
Okoromoba, Otome E.;Han, Junbin;Hammond, Gerald B.;Xu, Bo

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氟化氢(HF)和选择的非碱性和弱配位(朝向阳离子金属)氢键受体(例如,DMPU)可以通过氢键形成稳定的配合物。DMPU/HF配合物是一种新型的亲核取代试剂,具有很高的酸性,与阳离子金属催化剂相容。用DMPU/HF络合物催化炔的单-和二氢缩合反应,区域选择性地合成了重要的氟代烯烃和偕-二氟亚甲基化合物。
Hydrogen fluoride (HF) and selected nonbasic and weakly coordinating (toward cationic metal) hydrogen-bond acceptors (e.g., DMPU) can form stable complexes through hydrogen bonding. The DMPU/HF complex is a new nucleophilic fluorination reagent that has high acidity and is compatible with cationic metal catalysts. The gold-catalyzed mono- and dihydrofluorination of alkynes using the DMPU/HF complex yields synthetically important fluoroalkenes and gem-difluoromethlylene compounds regioselectively.
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