## Abstract __Lewis__ acids catalyze teh condensation of methyl pyruvate and l‐naphtol to give menthyl 2‐hydroxy‐2‐(l‐hydroxy‐2‐naphtyl)propionate in a ratio of up 96:4 in favor of the levorotatory diastereoisomer. Epimerization, at 25°C for five days, occurs on benzylic carbon atom to give a 30:70
The Reaction of Pyruvic Acid with Amines and Aminoesters Reexamined. Preliminary communication
✍ Scribed by Silvia Bradamante; Silvana Colombo; Giorgio A. Pagani; Stefano Roelens
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- German
- Weight
- 214 KB
- Volume
- 64
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Phenylglycine esters react with pyruvic acid to give α‐methylsuccinic amides 9 instead of the expected Schiff bases 8, analogously to p‐anisidine but unlike aniline.
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## Abstract The reaction of norbornene with lead tetraacetate is found to be much more complex than previously reported. In acetic acid and in benzene, the __syn__‐7‐norbornenyl, 3‐nortricyclyl, and __syn__ and __anti__‐7‐acetoxy‐__exo__‐2‐norbornyl acetates were characterized. In methanol, the iso
The Ce(III)-, Mn(II)-, or ferroin reaction of bromate ion and 2ϩ (Fe(phen) )-catalyzed 3 pyruvic acid (PA) or its dimer exhibits oscillatory behavior. Both the open-chain dimer (parapyruvic acid, ␥-methyl-␥-hydroxyl-␣-keto-glutaric acid, DPA1) and the cyclic-form dimer (␣keto-␥-valerolactone-␥-carbo
The lead tetraacetate (LTA) oxidation of saturated alcohols in non-polar solvents affords usually as major products unsubstituted tetrahydrofuran-type ethers, the formation of which involves intramolecular 1,5-hydrogen abstraction by the initially produced alkoxy radicals, followed by internal attac