An Improved Synthesis of
(4-{4-Hydroxy-3-isopropyl-5-[(4-nitrophenyl)ethynyl]benzyl}-3,5-dimethylphenoxy)acetic
Acid (NH-3)
作者:Kenneth Rehder、Madathil Gopinathan
DOI:10.1055/s-0028-1088041
日期:——
5-dimethylphenoxy)acetate in high yield. Saponification of the ester group, followed by the removal of the methoxymethyl group afforded (4-4-hydroxy-3-isopropyl-5-[(4-nitrophenyl)ethynyl]benzyl}-3,5-dimethylphenoxy)acetic acid (NH-3). coupling - Sonogashira coupling - palladium catalysis - 1-iodo-4-nitrobenzene -hydrolysis