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Axially chiral electron-rich TunePhos-type ligand: synthesis and applications in asymmetric hydrogenation

✍ Scribed by Yaping Zou; Huiling Geng; Weicheng Zhang; Shichao Yu; Xumu Zhang

Book ID
104096766
Publisher
Elsevier Science
Year
2009
Tongue
French
Weight
232 KB
Volume
50
Category
Article
ISSN
0040-4039

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✦ Synopsis

A new electron-rich TunePhos type ligand has been synthesized; excellent enantioselectivities (up to 99% ee) have been achieved in Rh-catalyzed asymmetric hydrogenation of a-dehydroamino acid methyl esters and dimethyl itaconate.

πŸ“œ SIMILAR VOLUMES

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3 was obtained in high yield through the efficient methylation of the commercially available compound 2 with Me 2 SO 4 at 80 Β°C in 95% yield.