Ru-Catalyzed, cis-Selective Living Ring-Opening Metathesis Polymerization of Various Monomers, Including a Dendronized Macromonomer, and Implications to Enhanced Shear Stability.
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DOI: 10.1021/jacs.0c02785
Abstract: An unsaturated polymer's cis/trans-olefin content has a significant influence on its properties. For polymers obtained by ring-opening metathesis polymerization (ROMP), the cis/trans-olefin content can be tuned by using specific catalysts. However, cis-selective ROMP has suffered… read more here.
Keywords: cis selective; olefin content; ring opening; polymerization ... See more keywords
cis-Selective Hydrogenation of Aryl Germanes: A Direct Approach to Access Saturated Carbo- and Heterocyclic Germanes
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DOI: 10.1021/jacs.2c12062
Abstract: A catalytic approach of synthesizing the cis-selective saturated carbo- and heterocyclic germanium compounds (3D framework) is reported via the hydrogenation of readily accessible aromatic germanes (2D framework). Among the numerous catalysts tested, Nishimura’s catalyst (Rh2O3/PtO2·H2O)… read more here.
Keywords: heterocyclic germanes; hydrogenation; carbo heterocyclic; selective hydrogenation ... See more keywords
cis-Selective Acyclic Diene Metathesis Polymerization of α,ω-Dienes.
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DOI: 10.1021/jacs.3c03978
Abstract: The cis/trans stereochemistry of repeating alkenes in polymers provides a powerful handle to modulate the thermal and mechanical properties of these soft materials, but synthetic methods to precisely dictate this parameter remain scarce. We report… read more here.
Keywords: selective acyclic; acyclic diene; diene metathesis; diene ... See more keywords
Titanium isopropoxide-mediated cis-selective synthesis of 3,4-substituted butyrolactones from CO2.
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DOI: 10.1039/d2cc00446a
Abstract: We report a Ti(OiPr)4-mediated multicomponent reaction, which produces 3,4-substituted cis-δ-lactones from alkyl magnesium chloride, benzaldehyde and CO2. The key intermediate, titanacyclopropane, is formed in situ from Ti(OiPr)4 and a Grignard reagent, which enables 1,2-dinucleophilic reactivity… read more here.
Keywords: selective synthesis; synthesis substituted; mediated cis; isopropoxide mediated ... See more keywords