Chemical Communications p. 1911 - 1914 (2021)
Update date:2022-08-10
Topics:
Wu, Dan
Hao, Wen-Juan
Rao, Qian
Lu, Yi
Tu, Shu-Jiang
Jiang, Bo
A new and general photocatalytic Kharasch-type addition/1,5-(SN′′)-substitution cascade of 1,7-diynes with alkyl halides such as BrCCl3and CBr4was reported for the first time, and used to produce 65 hitherto unreported β-gem-dihalovinyl ketones/aldehydes with moderate to excellent yields in a highly regioselective manner. This reaction tolerates a wide scope of substrates, which offers a green and efficient entry to fabricate synthetically important β-gem-dihalovinyl carbonyl scaffolds. Notably, the late-stage application of these resulting β-gem-dihalovinyl carbonyls shows high and unique reactivity profiles and demonstrates the versatility of their derivatization.
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