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Cotinica Craita

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Related publications (4)

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Sulfur dioxide-mediated syntheses of polyfunctional alkenes and (E,Z)- and (E,E)-2,4-dien-1-ones

Pierre Vogel, Laure Bouchez, Cotinica Craita

Efficient methods for the stereoselective synthesis of polyfunctional (E)- and (2)-alkenes and conjugated (EE)- and (E,2)-dienones are presented. They rely upon one-pot, four-component processes that condense 1-oxy-1,3-dienes, silyl enol ethers, SO2, and c ...

2005

Silyl methallylsulfinates: efficient and powerful agents for the chemoselective silylation of alcohols, polyols, phenols and carboxylic acids

Pierre Vogel, Loay Awad, Cotinica Craita, Xiaogen Huang

Alcohols, phenols and carboxylic acids are silylated with very good yields in the presence of silyl methallylsulfinates under non- basic conditions and with the formation of volatile co-products. ...

Royal Society of Chemistry2005

Use of sultines in the asymmetric synthesis of polypropionate antibiotics

Pierre Vogel, Maris Turks, Laure Bouchez, Cotinica Craita, Xiaogen Huang, Freddy Fonquerne

At low temperature and in the presence of an acid catalyst, SO2 adds to 1,3-dienes equilibrating with the corresponding 3,6-dihydro-1,2-oxathiin-2-oxides (sultines). These compounds are unstable above -60 degrees C and equilibrate with the more stable 2,5- ...

De Gruyter2008

Total asymmetric synthesis of advanced polyketide fragments of apoptolidinone and rectricticin using new organic chemistry of sulfur dioxide

Cotinica Craita

Under appropriate conditions sulfur dioxide reacts with 1,3-dienes in a hetero-Diels-Alder fashion. In the case of 1-alkoxy-1,3-dienes the 6-alkoxy-3,6-dihydro-1,2-oxathiin-2-oxides (sultines) so-obtained can be ionized in the presence of Lewis or protic a ...

EPFL2006