𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A new chiral auxiliary in enantioselective hydrogenations: (−)-dihydrovinpocetine. Part I. Hydrogenation of isophorone

✍ Scribed by T. Tarnai; A. Tungler; T. Máthé; J. Petró; R.A. Sheldon; G. Tóth

Book ID
108046628
Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
604 KB
Volume
102
Category
Article
ISSN
1381-1169

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

A new chiral auxiliary in enantioselecti
A new chiral auxiliary in enantioselective hydrogenations: (—)-dihydrovinpocetine. Hydrogenation of ethyl pyruvate. II
✍ A. Tungler; T. Máthé; K. Fodor; R.A. Sheldon; P. Gallezot 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 597 KB

A vinca-type synthetic alkaloid: ( -)-dihydrovinpocetine functions as a chiral auxiliary in the enantioselective hydrogenation of the C=O group of ethyl pyruvate. Various catalysts, supports, solvents have been screened. The effect of modifier's concentration, acetic acid additive and of combined mo

New chiral auxiliaries in enantioselecti
New chiral auxiliaries in enantioselective heterogeneous catalytic hydrogenations: (−) and (+)-dihydro-apovincaminic acid. Comparison with (−)-dihydro-apovincaminic acid ethyl ester. III
✍ G. Farkas; K. Fodor; A. Tungler; T. Máthé; G. Tóth; R.A. Sheldon 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 125 KB

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.