Results 251 to 260 of about 542,281 (388)

Gastroplasty and fundoplication in the management of complex reflux problems

open access: bronze, 1978
F.G. Pearson   +2 more
openalex   +1 more source

Synthesis of 1‐Naphthylamines Utilizing [4 + 2] Cycloaddition Between 3‐Amino‐2‐pyrones and Benzynes

open access: yesAsian Journal of Organic Chemistry, EarlyView.
Synthesis of 1‐naphthylamines is developed using [4 + 2] cycloaddition between 3‐amino‐2‐pyrone, which is prepared by the conjugate addition reaction of diethyl 2‐aminomalonate to alkynyl ketones, and benzyne generated from o‐silylaryl triflates. This synthetic strategy was successfully applied to the syntheses of iodonaphthalene, naphthylimide, and ...
Atsuya Kawazoe   +2 more
wiley   +1 more source

Mitochondria‐Targeting Abasic Site‐Reactive Probe (mTAP) Enables the Manipulation of Mitochondrial DNA Levels

open access: yesAngewandte Chemie, EarlyView.
Mitochondria‐targeting water‐soluble probe mTAP exclusively reacts with mitochondrial abasic sites, enabling the manipulation of mitochondrial DNA levels under genotoxic stress. Abstract Mitochondrial DNA (mtDNA) encodes essential genes for mitochondrial and cellular functions and acts as a cell signaling molecule in innate immune and inflammatory ...
Anal Jana, Yu‐Hsuan Chen, Linlin Zhao
wiley   +2 more sources

Piano‐Stool Rhodium(V) and Rhodium(IV) Intermediates in C─H Functionalization and B─H Functionalization: Mechanistic Insights and Emerging Reactivity

open access: yesAsian Journal of Organic Chemistry, EarlyView.
High‐valent Rh(IV) and Rh(V) species have been invoked to rationalize enhanced catalytic reactivity. This review examines evidence for both, emphasizing reactions proceeding through the Rh(III)/Rh(IV)/Rh(II) cycle. While Rh(V) intermediates are computationally supported, experimental evidence is limited; Rh(IV) species are supported by both theory and ...
Yujie Cao, Arnav Kacker, Kevin G. M. Kou
wiley   +1 more source

On‐Surface Synthesis and Characterization of Cumulene‐Linked Stone‐Wales Polymers

open access: yesAngewandte Chemie, EarlyView.
On‐surface synthesis of one‐dimensional polymers featuring Stone‐Wales defects and cumulene linkages is demonstrated via thermally and light‐induced reactions on Au(111). STM, nc‐AFM, and Raman spectroscopy, complemented by theory calculations, reveal their chemical structure with a non‐planar geometry, and a distinct electronic bandgap of 1.8 eV ...
Elena Pérez‐Elvira   +15 more
wiley   +2 more sources

EXPERIMENTAL STUDIES ON THE REFLUX ESOPHAGITIS IN RATS

open access: hybrid, 1979
Yuzo Uchida   +4 more
openalex   +2 more sources

Synthesis of Novel Dihydropyridine‐Iminium Salts Containing a Selenazine Core

open access: yesAsian Journal of Organic Chemistry, EarlyView.
An efficient method to develop novel dihydropyrido[3,2‐e][1,3]selenazines iminium salts. A comparative study of the key reagent selenourea towards thiourea and urea was carried out to assess the contribution of chalcogen to the pathway. DFT (density functional theory) calculations have predicted the optimized minimum energy structure for the hybrid ...
Reinier Lemos   +6 more
wiley   +1 more source

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