Sökning: "organophosphorus"

Visar resultat 1 - 5 av 8 avhandlingar innehållade ordet organophosphorus.

1. 1. Bridging McMurry and Wittig in One-Pot : Olefins from Stereoselective, Reductive Couplings of Two Aldehydes via Phosphaalkenes

   Författare :Juri Mai; Sascha Ott; Christian Müller; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; carbonyl olefination; reductive aldehyde coupling; stereoselective; organophosphorus; phosphaalkene; phosphanylphosphonate; Wittig; Horner-Wittig; Horner-Wadsworth-Emmons; McMurry; Kemi; Chemistry;

   Sammanfattning : The formation of C=C bonds is of great importance for fundamental and industrial synthetic organic chemistry. There are many different methodologies for the construction of C=C bonds in the literature, but currently only the McMurry reaction allows the reductive coupling of two carbonyl compounds to form alkenes. LÄS MER

3. 2. Novel Organophosphorus Compounds for Materials and Organic Synthesis

   Författare :Keyhan Esfandiarfard; Sascha Ott; Declan Gilheany; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : This thesis is devoted to the development of new organophosphorus compounds for potential uses in material science and as reagents in Organic Chemistry. Organophosphorus compounds in a single molecule or organic electronics context are appealing as the phosphorous centers perturb the electronic properties of the π-conjugated systems while at the same time provide synthetic handles for subsequent synthetic modifications. LÄS MER

4. 3. Surface reactions of Organophosphorus compounds on Iron Oxides

   Författare :Peter Mäkie; Lars Österlund; Per Persson; Gunnar Westin; Magnus Skoglundt; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Spectroscopy; Spektroskopi;

   Sammanfattning : .... LÄS MER

5. 4. A physical method for continuous analysis of low concentrations of supertoxic organophosphorus compounds

   Författare :Harald Frostling; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : .... LÄS MER

7. 5. Levels and sources of organophosphorus flame retardants and plasticizers in indoor and outdoor environments

   Författare :Anneli Marklund; Peter Haglund; Barbro Andersson; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; organophosphate esters; OPs; human exposure; air; dust; sewage treatment plants; sludge; oil; snow; deposition; flame retardants; plasticizers; analysis; TCEP; TPP; TCPP; TBP; TBEP; Environmental chemistry; Miljökemi;

   Sammanfattning : Global consumption of organophosphate esters (OPs), which are used as flame retardants and plasticizers, is rapidly increasing. Their use as additives in diverse applications poses a risk as they may be emitted from the products they are added to and be further transported in the environment. LÄS MER