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Concave Reagents, 11. Concave Benzoates, Sterically Extremely Shielded Esters
Author(s) -
Lüning Ulrich,
Wangnick Carsten
Publication year - 1992
Publication title -
liebigs annalen der chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 0170-2041
DOI - 10.1002/jlac.199219920185
Subject(s) - benzoates , saponification , chemistry , methyl benzoate , organic chemistry , iodide , reagent , nucleophilic substitution
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 .
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