METHOD FOR DIRECTLY PREPARING AMINO-ALCOHOLS OR ALCOHOLS USING HALOGENOZINC HYDRIDES
The invention relates to a method for preparing amino-alcohols and alcohols in a simple and low-cost manner by directly reducing amino-acids, carboxylic acids and corresponding esters with the aid of a novel nondangerous reducing entity embodied in the form of a halogenozinc borohydride of formula Z...
Saved in:
Main Author | |
---|---|
Format | Patent |
Language | English French |
Published |
10.08.2006
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | The invention relates to a method for preparing amino-alcohols and alcohols in a simple and low-cost manner by directly reducing amino-acids, carboxylic acids and corresponding esters with the aid of a novel nondangerous reducing entity embodied in the form of a halogenozinc borohydride of formula ZnXBH4, wherein X is Cl, Br, I or F. The inventive reducing entity can be pre-prepared or formed in situ. The inventive method consists in forming an (amino-alcohol or alcohol)/borane complex by a reducing reaction and, afterwards in hydrolysing said complex in such a way that the desired amino-alcohol or alcohol is obtainable.
La présente invention concerne un procédé de préparation simple et rentable des amino-alcools et alcools par réduction directe des amino-acides, acides carboxyliques et esters correspondants, à l'aide d'une nouvelle entité réductrice non dangereuse, qui est le borohydrure d'halogénozinc de formule ZnXBH4, où X représente Cl, Br, I ou F. L'entité réductrice peut être formée préalablement ou in situ. Lors de la réaction de réduction, un complexe (amino-alcool ou alcool)/borane est formé. Celui-ci est ensuite hydrolyse et on obtient l'amino-alcool ou l'alcool désiré. |
---|---|
Bibliography: | Application Number: WO2006EP50589 |