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A novel dual catalytic system of iodine and manganese is used for the first time for oxidative dehydrogenation coupling of amines with thiols during aerobic oxidation. Sulfenamides are synthesized via this approach with moderate to high efficiencies. The mechanistic studies indicate that activated MnO is an electron transfer bridge for assisting iodine in completing the catalytic cycle.
This article was published in the following journal.
Name: Organic letters
Manganese(III) porphyrin chloride complexes have been developed for the first time as catalysts for the acceptorless dehydrogenative coupling of alcohols and amines. The reaction has been applied to t...
The aerobic Cu/ABNO catalyzed oxidative coupling of alcohols and amines is highlighted here in the synthesis of amide bonds in diverse drug-like molecules (ABNO = 9-azabicyclo[3.3.1]nonane N-oxyl). Th...
A robust and rapid manganese formic acid (FA) dehydrogenation catalyst is reported. The manganese is supported by the recently developed, hybrid backbone chelate ligand tBuPNNOP (tBuPNNOP = 2,6-(diter...
We herein disclose the first report of a first-row transition metal-catalyzed α,β-dehydrogenation of carbonyl compounds using allyl-nickel catalysis. This development overcomes several limitations o...
Dual photoredox transition-metal catalysis has recently emerged as a powerful tool for making synthetically challenging carbon-carbon bonds under milder reaction conditions. Herein, we report on the v...
Objective: Report manganese serum levels and mortality in encephalopathic patients. Patients and participants: Consecutive patients aged > 18 years, with hepatic encephalopathy an...
Value of the Combination Ultrasonography With Ti-RADS Score / Dual Tracer Scintigraphy MIBI-Tc99m/Iodine-123 in the Detection of Malignancy of Thyroid Nodules (≥15 mm) Classified Bethesda III or IV on Cytology
The main objective of the study is to show that the addition of ultrasonography to the dual tracer scintigraphy MIBI-Tc99m/Iodine-123 will increase (at least +5%) the negative predictive v...
To explore main cause and health impact of iodine excess during pregnancy, we performed iodine evaluation for 390 consecutive pregnant women from January 1st, 2016 to December 31st, 2016. ...
The overall objective of this study is to develop a reliable method to obtain habitual iodine intakes from spot urinary iodine concentration (UIC) and to assess the prevalence of inadequat...
Comparing two techniques (Subtraction and Dual Energy CT) for functional Chest CT for patients with suspected with pulmonary embolism.
Manganese poisoning is associated with chronic inhalation of manganese particles by individuals who work with manganese ore. Clinical features include CONFUSION; HALLUCINATIONS; and an extrapyramidal syndrome (PARKINSON DISEASE, SECONDARY) that includes rigidity; DYSTONIA; retropulsion; and TREMOR. (Adams, Principles of Neurology, 6th ed, p1213)
Enzymes catalyzing the dehydrogenation of or oxidation of compounds containing primary amines.
Enzymes catalyzing the dehydrogenation of secondary amines, introducing a C=N double bond as the primary reaction. In some cases this is later hydrolyzed.
Stable iodine atoms that have the same atomic number as the element iodine, but differ in atomic weight. I-127 is the only naturally occurring stable iodine isotope.