61346-65-4Relevant academic research and scientific papers
Regio- and Stereoselectivity of Water Elimination as a Function of Ring Size
Greve, Bjoern,Imming, Peter
, p. 8058 - 8062 (1997)
The elimination of water from tertiary alcohols was studied for carbocycles of ring size 5-16. The resulting olefins 3-5 were discriminated by NMR spectroscopy. The relative amount of their formation reflects the steric idiosyncrasies of the respective ri
Effiziente Synthese neuer 2-Cycloalk(en)yl-propansaeure-Derivate - mittlere und grosse Ringe als Bioisostere von Alkylphenylresten?
Greve, Bjoern,Imming, Peter,Laufer, Stefan
, p. 1312 - 1314 (2007/10/03)
Stichworte: Cycloalkanone, Cyclooxygenase-Inhibitoren, Mittlere Ringe, Zinkverbindungen
An Efficient Entry Into Butenolides: Synthesis Of (+/-) Mintlactone
Chavan, Subhash P.,Zubaidha, P. K.,Ayyangar, Nagaraj R.
, p. 4605 - 4608 (2007/10/02)
Osmylation of β,γ-unsaturated esters and acid catalysed cyclisation of the resultant diols generate butenolides in high yields.
PHOTODECONJUGAISON ENANTIOSELECTIVE D'ESTERS ET DE LACTONES CONJUGUEES EN PRESENCE D'EPHEDRINE
Henin, Francoise,Mortezaei, Reza,Muzart, Jacques,Pete, Jean-Pierre,Piva, Oliverier
, p. 6171 - 6196 (2007/10/02)
α,β-unsaturated esters and α-alkylidene lactones bearing one γ-hydrogen on the unsaturated chain, were deconjugated by irradiation with UV light (λ=254 nm).When the reaction was carried out in the presence of (+) or (-) ephedrine, an enantioselective C-protonation of the photodienolic intermediate led to the deconjugated ester with an enantiomeric excess up to 30 percent.The scape of the reaction and the configuration of the new asymmetric center are discussed.
O-SILYLATED ENOLATES IN ORGANIC SYNTHESIS: SULPHUR-MEDIATED ALKYLATION OF ESTERS WITH ALKENES.
Patel, Shailesh K.,Paterson, Ian
, p. 1315 - 1318 (2007/10/02)
O-Silylated ester enolates can be alkylated, under ZnBr2-catalysis, by the PhSCl-adducts of mono- and di-substituted alkenes to give γ-phenylthioesters, from which sulphur can be removed both reductively and oxidatively.This alkene carbosulphenylation rea
