Recommanded Product: 52287-51-1. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 6-Bromo-2,3-dihydrobenzo[b][1,4]dioxine, is researched, Molecular C8H7BrO2, CAS is 52287-51-1, about Selective Carbonyl-C(sp3) Bond Cleavage To Construct Ynamides, Ynoates, and Ynones by Photoredox Catalysis.
C-C bond cleavage/functionalization is synthetically valuable, and selective carbonyl-C(sp3) bond cleavage/alkynylation presents a new perspective in constructing ynamides, ynoates, and ynones. Reported here is the 1st alkoxyl-radical-enabled carbonyl-C(sp3) bond cleavage/alkynylation reaction by photoredox catalysis. The use of novel cyclic I(III) reagents are essential for β-carbonyl alkoxyl radical generation from β-carbonyl alcs., including alcs. with high redox potential (Epox>2.2 V vs. SCE in MeCN). β-Amide, β-ester, and β-ketone alcs. yield ynamides, ynoates, and ynones, resp., for the 1st time, with excellent regio- and chemoselectivity under mild reaction conditions.
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Reference:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics