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New chiral auxiliaries in enantioselective heterogeneous catalytic hydrogenations: (−) and (+)-dihydro-apovincaminic acid. Comparison with (−)-dihydro-apovincaminic acid ethyl ester. III

✍ Scribed by G. Farkas; K. Fodor; A. Tungler; T. Máthé; G. Tóth; R.A. Sheldon

Book ID: 104424036
Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 125 KB
Volume: 138
Category: Article
ISSN: 1381-1169
DOI: 10.1016/s1381-1169(98)00140-x

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✦ Synopsis

The preparation, characterisation, use and comparison with y -dihydro-apovincaminic acid ethyl ester of y and Ž . q -dihydro-apovincaminic acid as chiral modifier in heterogeneous catalytic asymmetric hydrogenations are reported. The epimeric compositions were determined using NMR and HPLC methods.

📜 SIMILAR VOLUMES

(−)-Dihydro-apovincaminic acid ethyl est

(−)-Dihydro-apovincaminic acid ethyl ester, preparation and use as a chiral modifier in enantioselective heterogeneous catalytic hydrogenations

✍ A. Tungler; T. Máthé; T. Tarnai; K. Fodor; G. Tóth; J. Kajtár; I. Kolossváry; B. 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 394 KB

The preparation, characterisation and use of (-)-dihydro-apovincaminic acid ethyl ester as a chiral modifier in heterogeneous catalytic asymmetric hydrogenations is reported. The epimeric compositions were determined using NMR and HPLC methods and circular dichroism spectroscopy was used to detect