Results 141 to 150 of about 764,891 (276)
Sulfur‐Directed Construction of Vinyl Cyclopropanes from 1,3‐Dienes
Angewandte Chemie, EarlyView.Sulfur takes control. A pending thioether acts as a molecular compass, directing carbene addition to the 1,3‐diene scaffold with exceptional regio‑ and diastereocontrol to forge sulfur‐substituted vinyl cyclopropanes (S‐VCPs) — molecular architectures inaccessible via conventional cyclopropanation strategies.
Anna Keimer +6 more
wiley +2 more sources
Convergent Total Synthesis of 16β‐Hydroxylpseudobufarenogin
Angewandte Chemie, EarlyView.We present a novel convergent strategy that integrates Pd/Ag‐promoted Suzuki–Miyaura coupling with Ir‐catalyzed radical‐relay cyclization, enabling the first total synthesis of 16β‐hydroxylpseudobufarenogin. This approach is broadly applicable to the total synthesis of various oxygenated bufadienolides by simply modifying the fragment structures ...
Wataru Shigematsu +3 more
wiley +2 more sources
Cobalt‐Catalyzed Intramolecular C─H Silylation of Arenes
Angewandte Chemie, EarlyView.Direct C─Si bond formation via C─H silylation is an atom‐economical route to organosilanes but is largely limited to noble metals. We report the first cobalt‐catalyzed intramolecular arene C–H silylation enabled by HCo(PMe3)4, which activates Si–H and C–H bonds to form diverse silacycles and silafluorenes in high yields with broad functional‐group ...
Yongqiang Xu +4 more
wiley +2 more sources
Identification of Exogenous and Endogenous Factors Affecting Competitiveness: An Application to the Spanish Furniture Industry [PDF]
In this paper we study what type of exogenous (related to the external structure) and endogenous (related to the firm) aspects affect industry´competitiveness.
Juan Ignacio Dalmau-Porta +1 more
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Programming Palladium Cage Geometry through Ligand Redox Modulation
Angewandte Chemie, EarlyView.A neutral redox‐active exTTF ligand (L) forms a Pd2L4 cage, whereas its oxidized form (Lox) yields a Pd2(Lox)2 macrocycle. Lox further assembles with a dibenzothiophene derivative (L′) into Pd2(Lox)(L′)2 and Pd4(Lox)4(L′)4 architectures. Reduction of Pd2(Lox)2 and Pd2(Lox)(L′)2 restores the parent Pd2L4 cage, enabling redox controlled nuclearity ...
Jennifer Bou Zeid +11 more
wiley +2 more sources
Angewandte Chemie, EarlyView.The use of transition‐metal catalysts and design of chiral ligands have allowed chemists to access highly functionalized benzofused 5‐ and 6‐ membered rings in high yield and enantioselectivity. A common strategy used relies on an intermolecular carbometalation across alkynes and olefins, usually followed by a subsequent intramolecular carbometalation.
Clara Jans +3 more
wiley +2 more sources
Angewandte Chemie, EarlyView.Cyclic diaryliodonium salts engage aryl Grignard reagents to trigger a self‐propagating aryne–arylation cycle. Transient cyclic triaryliodanes serve as aryne precursors and dynamic aryl reservoirs, delivering iodine‐capped teraryls with predominant meta‐selectivity. The preserved C─I bond enables outward π‐extension or inward recyclization.
Daichi Ikeshita +2 more
wiley +2 more sources
Research on innovative furniture design methods combining Huizhou window grilles with digital technology. [PDF]
Sci RepWang W, Zhao J, Wang X, Zheng Q.
europepmc +1 more source
What Do People Buy When They Don't Buy Health Insurance And What Does that Say about Why They are Uninsured? [PDF]
Using data from the 1994 through 1998 Consumer Expenditure Surveys, we compare household spending on 16 different goods (food at home, food away from home, housing, transportation, alcohol and tobacco, interest, furniture and appliances, home maintenance,
Helen Levy, Thomas DeLeire
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