The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: (1,10-Phenanthroline)(trifluoromethyl)copper(I)( cas:1300746-79-5 ) is researched.Product Details of 1300746-79-5.Dibrell, Sara E.; Maser, Michael R.; Reisman, Sarah E. published the article 《SeO2-Mediated Oxidative Transposition of Pauson-Khand Products》 about this compound( cas:1300746-79-5 ) in Journal of the American Chemical Society. Keywords: bicyclic cyclopentenone oxidative transposition selenium dioxide mediated. Let’s learn more about this compound (cas:1300746-79-5).
Oxidative transpositions of bicyclic cyclopentenones I [R1 = Me, Ph, n-hexyl, 3-pyridyl, etc.; R2 = H, Me; R3 = H, Me, Ph; R32 = (CH2)5, CH2CH2NBocCH2CH2; X = O, NBoc, C(CO2Et)2, C(CO2i-Pr)2] mediated by selenium dioxide (SeO2) has been disclosed. Treatment of Pauson-Khand (PKR) reaction products I with SeO2 in the presence or absence of water furnished the corresponding di- and trioxidized cyclopentenones II and III [from I (R2 = H)], resp. Mechanistic investigations revealed multiple competing oxidation pathways that depend on substrate identity and water concentration Functionalization of the oxidized products via cross-coupling methods demonstrated their synthetic utility. These transformations allows rapid access to oxidatively transposed cyclopentenones from simple PKR products.
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Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics