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Lipase catalyzed transesterification of 2-substituted 3-hydroxy esters

โœ Scribed by Harumi Kaga; Kunio Hirosawa; Tomiki Takahashi; Kouhei Goto


Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
95 KB
Volume
10
Category
Article
ISSN
0899-0042

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โœฆ Synopsis


Kinetic resolution of 2-substituted 3-hydroxy esters was examined by lipase PS catalyzed transesterification using vinyl acetate as an acyl donor. Resolution of (ยฑ)-syn-and -anti-1a, -1e possessing a small methyl group at the C-3 position was accomplished enantioselectively. The outcome of the resolution seems to be related to the differences in size of the substituents at the stereocenter bearing a secondary hydroxy group.


๐Ÿ“œ SIMILAR VOLUMES


Resolution of racemic carboxylic acids v
โœ Toshifumi Miyazawa; Sota Kurita; Masanori Shimaoka; Shinichi Ueji; Takashi Yamad ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 93 KB ๐Ÿ‘ 2 views

The lipase-catalyzed irreversible transesterification procedure using vinyl esters was applied to the resolution of racemic 2-phenoxypropanoic acids. Aspergillus niger lipase showed high enantioselectivities and reasonable reaction rates. The enantioselectivity was found to be affected profoundly by