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A zinc-catalyzed intermolecular alkyne-carbonyl metathesis reaction of ynamides with isatins followed by an amide to ester interconversion has been developed, which produces the indolone derivatives with a fully substituted alkene species in good to high yields. The salient features of this reaction include mild reaction conditions, inexpensive zinc catalyst, broad substrate scope, excellent regiocontrol and stereoselectivity, and amenable to gram scale.
This article was published in the following journal.
Name: The Journal of organic chemistry
Iron(III)-catalyzed carbonyl-olefin ring-closing metathesis employs reactivity not typically observed in Lewis acid-catalyzed reactions. In converting a ketone with a pendant olefin into a cycloalkene...
An efficient and novel rhodium-catalyzed formal C-O insertion reaction of alkyne-tethered diazo compounds for the synthesis of 3 H-indol-3-ols is described. A type of donor/donor rhodium carbene gener...
The first examples of a catalytic tandem process involving a ring-closing carbonyl-olefin metathesis and a transfer hydrogenation are described. 1,4-Cyclohexadiene has been used as an H surrogate to r...
A gold-catalyzed formal 1,3-dipolar [3 + 2] annulation using readily accessible N-acyl sulfilimines and ynamides is reported. This reaction includes the cleavage of a N-S bond and subsequent C-O bond ...
A new type of molybdenum alkylidyne catalyst for alkyne metathesis is described, which is distinguished by an unconventional podand topology. These structurally well-defined complexes are easy to make...
Assessment of the impact of oral Human Milk Oligosaccharides (HMO) application on acute diarrhoea and the development of prolonged and persistent diarrhoea in paediatric patients hospitali...
Effect of Locally Delivered Antioxidants as An Adjunct to Non-surgical Periodontal Therapy on GCF Level of Oxidative Stress Marker; Protein Carbonyl
Residual renal function is reported to contribute to the survival and cardiovascular disease of peritoneal dialysis patients. Oxidative and carbonyl stress are increased in peritoneal dial...
In this study, the investigator will try to highlight the presence of carbonyl compounds in the hair follicles of women with telogen effluvium (ET) linked to stress of various origins (fat...
This is an interventional study to investigate formation and pharmacokinetics of reactive carbonyl species adducts of apple polyphenols in human after a single dose of apple consumption.
Complex of iron atoms chelated with carbonyl ions.
NADPH-dependent reductase that catalyzes the reduction of many carbonyl compounds including QUINONES; PROSTAGLANDINS; and XENOBIOTICS.
The simplest two carbon alkyne with the formula HCCH.
A ZINC metalloenzyme that catalyzes the transfer of a methyl group from BETAINE to HOMOCYSTEINE to produce dimethylglycine and METHIONINE, respectively. This enzyme is a member of a family of ZINC-dependent METHYLTRANSFERASES that use THIOLS or selenols as methyl acceptors.
A 20-carbon unsaturated fatty acid containing 4 alkyne bonds. It inhibits the enzymatic conversion of arachidonic acid to prostaglandins E(2) and F(2a).