Results 121 to 130 of about 27,319 (289)
Angewandte Chemie International Edition, EarlyView.The first enantioselective alkynylations of aqueous fluoral are described. These processes are catalyzed by an iodide‐bound ruthenium‐(Ph‐BPE)‐catalyst; an octahedral metal complex that can exist as 12 diastereomeric‐at‐metal isomers. Calculations reveal that 2 of 12 stereoisomeric complexes account for 99.9% of the Boltzmann population and that ...
Weijia Shen +6 more
wiley +1 more source
Understanding Enzyme Stereoselectivity and Substrate Specificity of Aldo-Keto Reductases
, 2015 Understanding Enzyme Stereoselectivity and Substrate Specificity of Aldo-Keto ...
Flingos, Emily +4 more
core
Stereoselectivity in DNA-Templated Organic Synthesis and Its Origins
, 2016 DNA-templated synthesis is a surprisingly general strategy for controlling chemical reactivity that enables synthetic products to be manipulated in ways previously available only to biological macromolecules.
David R. Liu (220122) +1 more
core +1 more source
Journal of Applied Polymer Science, EarlyView.Polyurethane films were prepared from andiroba (Carapa guianensis) and buriti (Mauritia flexuosa) oil‐derived polyols, emphasizing their potential as bio‐based materials. UV–Vis analysis indicates the retention of carotenoid‐related chromophoric features within the polymer matrix.
João A. P. da Silva +5 more
wiley +1 more source
Chemistry – A European Journal, EarlyView.Why add another catalyst when the product itself holds the power to catalyze its own formation? Autocatalysis in synthetic chemistry enhances reaction efficiency and uncovers novel catalytic behavior across both closed‐shell and open‐shell systems, expanding reactivity and enabling innovative design strategies.
Jaspreet Kaur, Joshua P. Barham
wiley +1 more source
Stereoselectivity of Sigmatropic Homodienyl [1,5]-Hydrogen Migrations
, 1990 Interactions affecting the transition state conformational preference of substituents (R1) at the migration origin have been extensively examined for a range of diversely substituted alkenylcyclopropane substrates undergoing homodienyl [1,5]-hydrogen
GV Meehan, GG Pegg
core +1 more source
Pd(II)‐Catalyzed Strategies for the β‐Arylation of α‐Amino Acids: An Overview
Chemistry – A European Journal, EarlyView.The graphical abstract summarizes the review “Pd(II)‐Catalyzed Strategies for the β‐Arylation of α‐Amino Acids: An Overview”, highlighting representative Pd(II)‐catalyzed methods for the β‐arylation of α‐amino acids. Key mechanistic features, substrate diversity, and synthetic relevance of these transformations are showcased. Abstract Metal‐catalyzed C─
Davide Illuminati +4 more
wiley +1 more source
Chemistry – A European Journal, EarlyView.The synthesis of 2‐methyl propellane and its conversion to various 1,2‐ and 1,2,3‐di‐ and trisubstituted bicyclopentanes is reported. Abstract Bicyclo[1.1.1]pentanes (BCPs) have emerged as isosteric replacements for mono‐ and para‐substituted benzene rings in medicinal and materials applications, involving substitution at the BCP bridgehead (1,3 ...
Sean R. Verschaeve +4 more
wiley +1 more source
A General Strategy for the Synthesis of Jerangolids Enabled by π‐allyl Stille Coupling
Chemistry – A European Journal, EarlyView.A general strategy for the synthesis of jerangolids is established, featuring a late‐stage π‐allyl Stille coupling of two advanced, highly customizable building blocks to form the skipped diene core. The approach provides access to all naturally occurring jerangolids, including jerangolid H, whose configuration is confirmed by NMR analysis.
Janick Schug +2 more
wiley +1 more source
Unexpectedly enhanced stereoselectivity of peroxidase-catalyzed sulfoxidation in branched alcohols
, 2002 Lyophilized horseradish peroxidase (HRP) exhibits poor stereoselectivity in the sulfoxidation of thioanisole when the enzyme is either redissolved in water or suspended in organic solvents.
Das, Prasanta Kumar +3 more
core +1 more source