Li, Siqi et al. published their research in Tetrahedron in 2018 | CAS: 14781-45-4

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. The evolution of transition metal catalysts has attained a stage of civilization that authorizes for an extensive scope of chemical bonds formation partners to be combined efficiently. Copper nanoparticles can catalyze the Ullmann coupling reaction in a wide range of applications.Recommanded Product: 14781-45-4

Microwave-assisted copper-catalyzed stereoselective ring expansion of three-membered heterocycles with α-diazo-β-dicarbonyl compounds was written by Li, Siqi;Chen, Xingpeng;Xu, Jiaxi. And the article was included in Tetrahedron in 2018.Recommanded Product: 14781-45-4 This article mentions the following:

Microwave-assisted copper-catalyzed stereoselective ring expansions of three-membered heterocycles with α-diazo-β-dicarbonyl compounds were investigated. Reaction of mono-substituted and cis-2-R1-3-R2-substituted thiiranes [R1 = H, R2 = n-Bu, n-hexyl, PhCH2CH2; R1R2 = (CH2)4] with α-diazo-β-dicarbonyl compounds R3C(O)C(:N2)C(O)R4 [R3 = Me, R4 = MeO, EtO; R3R4 = (CH2)3, CH2CMe2CH2] generated the corresponding 3-acyl-5,6-dihydro-1,4-oxathiines and trans-3-acyl-5,6-dihydro-1,4-oxathiines I with high stereospecificity through an intramol. SN2 process. In the presence of copper(II) hexafluoroacetylacetonate, mono-substituted and cis-2-R5-3-R6-substituted oxiranes [R5 = H, R6 = Ph, PhCH2, PhCH2CH2, PhOCH2, etc.; R5R6 = (CH2)4, (CH2)6] and α-diazo-β-dicarbonyls R7C(O)C(N2)C(O)R8 (R7 = Me, R8 = Me, MeO, EtO, Ph; R7 = Ph, R8 = EtO) gave rise to 2-acyl-5,6-dihydro-1,4-dioxines and cis-3-acyl-5,6-dihydro-1,4-dioxines II stereoselectively via an intimate ion-pair mechanism. The current method provides a direct and simple strategy in efficient preparation of 3-acyl-5,6-dihydro-1,4-oxathiines and 2-acyl-5,6-dihydro-1,4-dioxines, which are important agents in medicinal and agricultural chem., from readily available thiiranes and oxiranes, resp. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Recommanded Product: 14781-45-4).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. The evolution of transition metal catalysts has attained a stage of civilization that authorizes for an extensive scope of chemical bonds formation partners to be combined efficiently. Copper nanoparticles can catalyze the Ullmann coupling reaction in a wide range of applications.Recommanded Product: 14781-45-4

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”