Results 61 to 70 of about 863 (146)
Journal of Petroleum Geology, EarlyView.ABSTRACT Accurate prediction of the drilling rate of penetration (ROP) is crucial to optimizing drilling performance, wellbore stability, enhancing operational efficiency, and reducing the overall cost of hydrocarbon exploration. This study focused on evaluating and comparing different machine learning models for ROP prediction and identifying the most
Mohammad Islam Miah +2 more
wiley +1 more source
One-Pot Synthesis of Difluorobicyclo[1.1.1]pentanes from α-Allyldiazoacetates. [PDF]
Org Lett, 2023 Sharland JC, Davies HML.
europepmc +1 more source
“Smelltronics”—From Gas to Smell Sensing
Advanced Materials, Volume 38, Issue 61, 2 November 2026.The emerging field of smelltronics, encompassing sensing technologies for complex volatile organic compounds, holds significant potential for extracting valuable chemical information. It facilitates the noninvasive, real‐time monitoring of humans, food, and the environment.
Takeshi Ono +7 more
wiley +1 more source
Strain and Chirality: Catalytic Asymmetric Synthesis of Planar Chiral [2.2]Paracyclophanes
ChemistryEurope, Volume 4, Issue 11, November 2026.Catalytic asymmetric synthesis is transforming access to planar‐chiral [2.2]paracyclophanes. This Review highlights recent advances in catalytic desymmetrization and asymmetric functionalization, emphasizing how catalyst design and PCP geometry govern reactivity and stereocontrol.
Daniel Alonso +2 more
wiley +1 more source
Drug Testing and Analysis, Volume 18, Issue 11, Page 1456-1469, November 2026.Betamethasone concentrations in 20 horses from Japan and Germany following IV, IM, and INJ administration of betamethasone phosphate were analyzed using population pharmacokinetic modeling. For IV administration of 0.04 mg/kg q24 h, IPC and IUC were 0.012 and 0.31 ng/mL, respectively; the IUC approximated the IFHA urine ISL (0.20 ng/mL).
Taisuke Kuroda +9 more
wiley +1 more source
Stereochemical Control in the Matteson Reaction
Chemistry – A European Journal, Volume 32, Issue 40, 27 October 2026.The Matteson homologation is a highly versatile method for the stereoselective insertion of carbenoids into boronic esters. Through iterative application of the process, complex chiral molecules can be synthesized. The stereoselectivity of the reaction is determined by a chiral diol incorporated in the boronic ester.
Hae Mo Lee, Christoph Hirschhäuser
wiley +1 more source
Angewandte Chemie, Volume 138, Issue 43, 19 October 2026.A metal‐free photocatalytic platform converts nitrones into 4‐isoxazolines and oxa–aza–bicycloheptanes through divergent [3+2π/σ] cycloadditions. Assembly‐controlled kinetic electron transfer gating dictates substrate activation, enabling selective reactivity beyond thermodynamic expectations.
Nayan Saha +6 more
wiley +2 more sources
Chemistry – A European Journal, Volume 32, Issue 40, 27 October 2026.At last, the long‐sought bis(2‐adamantyl)magnesium reagent has been prepared in high yield as a stable tetrahydrofuran/dioxane adduct and fully characterized by x‐ray crystallography. This potent nucleophile outperforms the corresponding Grignard in transmetallation and carbonyl addition reactions, opening new avenues in adamantyl organometallic and ...
Matthew V. DaCosta +3 more
wiley +1 more source
Angewandte Chemie, Volume 138, Issue 43, 19 October 2026.The successful extension of the nickel‐catalyzed asymmetric coupling of polarized 1,3‐dienes with aldehydes to an intramolecular setting opens an efficient new entry into hydroxylated N‐heterocyclic compounds, most notably valuable tetrahydroisoquinolines.
Thilo Bender +3 more
wiley +2 more sources
Fluoroiodocarbene Addition to Bicyclobutanes: A Radical Handle for Quaternary Fluorinated Bicyclo[1.1.1]pentanes. [PDF]
Org LettSperga A +3 more
europepmc +1 more source