A number of 2-alkylthiopyrroles have been obtained in fair yields by metallation of ailyl isothiocyanate with a mixture of lithium diisopropylamide and potassium tert-butoxide, followed by successive addition of water atgl alkyl halide.
A simple preparative method for optically active glycidic esters
β Scribed by Fumio Toda; Hideaki Takumi; Kenya Tanaka
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 158 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0957-4166
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β¦ Synopsis
Some optically active glycidic esters were prepared by resolution through inclusion complexation with a chiral host compound, (R,R)-(-)-trans-4,5-bis(hydroxydiphenylmethyl)-2,2dimethyl-1,3-dioxacyclopentane, and its derivatives.
Optically active glycidic esters are useful synthon for various biologically active substances such as leukotriene B 4' 1 kijanolide,2 tetronolide 2 and chlorothricolide. 2 Esterification of optically active glycidic acid ~" RI_-R2=I~I--_Me: R3mH ~ RI=R3~R~Me; R2=H
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