Concave Reagents, 11. Concave Benzoates, Sterically Extremely Shielded Esters

✍ Scribed by Lüning, Ulrich ;Wangnick, Carsten

• Publisher: John Wiley and Sons
• Year: 1992
• Tongue: English
• Weight: 439 KB
• Volume: 1992
• Category: Article
• ISSN: 0947-3440
• DOI: 10.1002/jlac.199219920185

✦ Synopsis

Abstract

The synthesis and the properties of concave methyl benzoates 4 are described. The difficulties encountered in their saponification and ^1^H‐NMR data show that these esters 4 are severely shielded. Saponification is possible via nucleophilic substitution at the methyl groups by lithium iodide in pyridines. The products are the new concave benzoic acids 5d and 5e.