Publications by authors named "Linyang Wu"
Article Synopsis
- * The study investigated how different heat treatment processes affect the texture, hydrogen content, residual stress, and corrosion resistance of chromium coatings on steel.
- * It was found that heating to 380 °C for 4 hours significantly improved coating qualities, reducing hydrogen content and residual stress while increasing corrosion resistance and microhardness, allowing for a method to assess coating quality by examining macrotexture.
Article Synopsis
- - The study investigates the diagnostic effectiveness of the post-reflux swallow-induced peristaltic wave index (PSPWI) for diagnosing non-acid gastroesophageal reflux-related chronic cough (GERC) due to limitations in current diagnostic criteria.
- - A retrospective analysis of 223 patients highlighted that while PSPWI alone had a moderate diagnostic value for GERC (AUC 0.760), its effectiveness for non-acid GERC was lower (AUC 0.569), yet improved when combined with other indicators.
- - The results indicate that specific PSPWI thresholds, when combined with acid exposure time and non-acid reflux ratios, can enhance diagnostic accuracy for non-acid GERC, surpassing traditional symptom indexes
An iron-catalyzed asymmetric oxidative homo-coupling of 2-naphthols for the synthesis of 1,1'-Bi-2-naphthol (BINOL) derivatives is reported. The coupling reaction provides enantioenriched BINOLs in good yields (up to 99%) and moderate enantioselectivities (up to 81:19 er) using an iron-complex generated in situ from Fe(ClO) and a bisquinolyldiamine ligand [(1,2)-,-di(quinolin-8-yl)cyclohexane-1,2-diamine, ]. A number of ligands (-) and the analogs of , with various substituents and chiral backbones, were synthesized and examined in the oxidative coupling reactions.
View Article and Find Full Text PDFA copper-catalyzed annulation of alkyne-tethered enaminones for the synthesis of 2,3-ring fused pyrroles is reported. The 5--dig cyclization/olefin migration reaction delivers the multisubstituted pyrroles in 59-99% yields with 16 examples. This strategy features easily available starting materials, mild reaction conditions, and a cheap ligand-free copper catalyst.
View Article and Find Full Text PDFHerein we describe a general, mild and scalable method for deuterium incorporation by potassium methoxide/hexamethyldisilane-mediated dehalogenation of arylhalides. With CDCN as a deuterium source, a wide array of heteroarenes prevalent in pharmaceuticals and bearing diverse functional groups are labeled with excellent deuterium incorporation (>60 examples). The ipso-selectivity of this method provides precise access to libraries of deuterated indoles and quinolines.
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