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Lipase catalysed synthesis of optically enriched alpha-haloamides.

Bioorganic & medicinal chemistry (2001-05-30)
A Azim, S K Sharma, C E Olsen, V S Parmar
ABSTRACT

An efficient lipase catalysed synthesis of optically enriched alpha-halogenated amides with concomitant optical enrichment of the starting alpha-haloesters is described. Candida antarctica lipase (CAL) was found to be a better catalyst over porcine pancreatic lipase (PPL) and Candida cylindracea lipase (CCL). The effect of different organic solvents was also studied.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Diisopropyl ether, SAJ first grade, ≥99.0%
Sigma-Aldrich
Diisopropyl ether, contains either BHT or hydroquinone as stabilizer, ACS reagent, ≥99.0%
Sigma-Aldrich
Diisopropyl ether, puriss. p.a., ≥98.5% (GC)
Sigma-Aldrich
Diisopropyl ether, ReagentPlus®, 99%, contains either BHT or hydroquinone as stabilizer
Sigma-Aldrich
Diisopropyl ether, contains either BHT or hydroquinone as stabilizer, ACS reagent, ≥99.0%
Supelco
Diisopropyl ether, analytical standard
Sigma-Aldrich
Diisopropyl ether, anhydrous, 99%, contains either BHT or hydroquinone as stabilizer
Sigma-Aldrich
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