129886-60-8Relevant articles and documents
NOREPHEDRINE DERIVED 2-METHOXY OXAZOLIDINES AS CHIRAL FORMYL CATION EQUIVALENTS
Bernardi, Anna,Cardani, Silvia,Carugo, Oliviero,Colombo, Lino,Scolastico, Carlo,Villa, Roberto
, p. 2779 - 2782 (2007/10/02)
Lewis acid catalyzed reaction of silylenolethers with 1 followed by a straightforward nondestructive removal of the chiral auxiliary affords the corresponding aldehydes in good e.e.Compound 1 respresents the first effective synthetic equivalent of formyl cation.
STEREOCONVERGENT CROTYLSTANNANE ADDITION TO NOR-EPHEDRINE-DERIVED 2-METHOXY OXAZOLIDINES. A CLUE TOWARDS A SYNCLINAL TRANSITION STATE GEOMETRY
Pasquarello, A.,Poli, G.,Potenza, D.,Scolastico, C.
, p. 429 - 432 (2007/10/02)
The Lewis acid promoted addition of crotyl-n-tributylstannane to a nor-ephedrine-derived 2-methoxy-oxazolidine has been studied.This stereoconvergent reaction allows highly selective C-C bond formation and takes place with opposite stereochemistry with respect to the analogous silylketenethioacetal addition.This result suggests a preference for a synclinal transition state geometry.