20585-37-9Relevant academic research and scientific papers
Enantioselective synthesis of α-tertiary hydroxyaldehydes by palladium-catalyzed asymmetric allylic alkylation of enolates
Trost, Barry M.,Xu, Jiayi,Reichle, Markus
, p. 282 - 283 (2007/10/03)
Chiral α-tertiary hydroxyaldehydes are very versatile building blocks in synthetic chemistry. Herein, we report the first examples of a catalytic asymmetric protocol for the synthesis of such compounds from readily available α-halo or α-hydroxy ketones or enol silyl ethers with excellent yields and enantioselectivity. Its synthetic utility is demonstrated in the short, efficient formal synthesis of (S)-oxybutynin. In this process, the chiral ligand controls the regioselectivity as well as the enantioselectivity. Copyright
Stereodivergent synthesis of optically active tertiary alcohols via addition reaction of chiral 2-acyl oxazolidine with organometallics
Ukaji, Yutaka,Yamamoto, Kouji,Fukui, Masashi,Fujisawa, Tamotsu
, p. 2919 - 2922 (2007/10/02)
It was observed that diastereoselectivity in an addition reaction to chiral 2-acyl oxazolidine, derived from (S)-prolinol, can be fully regulated under appropriate conditions. Addition of organotitanium triisopropoxides provided (S)-tertiary alcohols, while organolithium reagents afforded the corresponding (R)-alcohols. Application of this methodology was demonstrated in the synthesis of (+)- and (-)-trihexyphenidyl.
