Search results for "Heptanoate"

showing 2 items of 2 documents

Favoring alkane primary carbon-hydrogen bond functionalization in supercritical carbon dioxide as reaction medium

2019

The selectivity of a catalytic alkane functionalization process can be modified just changing the reaction medium from neat alkane to supercritical carbon dioxide (scCO2). A silica supported copper complex bearing an Nheterocyclic carbene ligand promotes the functionalization of carbon-hydrogen bonds of alkanes by transferring the CHCO2Et group from N2=CHCO2Et (ethyl diazoacetate, EDA). In neat hexane only 3% of the primary C-H bonds (ethyl heptanoate being the product) are functionalized in that manner, whereas the same reaction carried out in scCO2 provides a 30% yield in this linear ester. Such effect seems to be induced by an electronic density flux from the NHC ligand to the surroundin…

Alkanechemistry.chemical_classificationSupercritical carbon dioxideRenewable Energy Sustainability and the EnvironmentGeneral Chemical EngineeringAlkaneCarbon–hydrogen bond activation02 engineering and technologyGeneral Chemistry010402 general chemistry021001 nanoscience & nanotechnology01 natural sciences0104 chemical sciencesCatalysisHexanechemistry.chemical_compoundchemistryEthyl diazoacetateCarbon dioxidePolymer chemistryEnvironmental Chemistry0210 nano-technologyCarbon-hydrogenCarbeneEthyl heptanoate
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Tyrosinaemia type Ia without excess of urinary succinylacetone.

1993

medicine.medical_specialtyPediatricsHeptanoates; Amino Acid Metabolism Inborn Errors; Humans; Tyrosine; Female; Child Preschoolbusiness.industryUrinary systemAmino Acid Metabolism Inborn Errormedicine.diseaseHuman geneticsHeptanoatesTyrosinemiaEndocrinologySuccinylacetoneInternal medicineChild PreschoolGeneticsMedicineHumansTyrosineFemaleHeptanoatebusinessAmino Acid Metabolism Inborn ErrorsGenetics (clinical)HumanJournal of inherited metabolic disease
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