## Abstract __N__โHydroxyalkylโ__1__โmenthopyrazoles acted as a chiral catalyst for the diethylzinc (**1**) addition to aromatic aldehydes, and 1โarylโ1โpropanols were afforded enantioselectively. These reactions were carried out optimally in toluene at 40 ยฐC in the presence of 30 mol% of (__2โฒS__)
Asymmetric Reaction of Diethylzinc with Aldehydes Catalyzed by l-Menthopyrazole Derivatives.
โ Scribed by Choji Kashima; Kohei Higashide; Yohei Miwa; Yoshihiro Tsukamoto
- Publisher
- John Wiley and Sons
- Year
- 2003
- Weight
- 99 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0931-7597
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๐ SIMILAR VOLUMES
## Abstract The equimolar mixture of __N__โ(hydroxyalkyl)pyrazoles and borane formed boric ester complex, in which the remaining borane was stabilized by the adjacent nitrogen of thr pyrazole ring. The borane complex derived from the chiral pyrazoles such as 3โphenylโ__l__โmenthopyrazole reduced __
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