ALABASTER, RAMON J.;COTTRELL, IAN F.;HANDS, DAVID;HUMPHREY, GUY R.;KENNED+, SYNTHESIS (BRD),(1989) N, C. 598-603
作者:ALABASTER, RAMON J.、COTTRELL, IAN F.、HANDS, DAVID、HUMPHREY, GUY R.、KENNED+
DOI:——
日期:——
Synthesis of 6-(3-Aryl-2-propenyl)-2,3-dihydro-5-hydroxybenzofuran Derivatives by Cross Coupling Reactions
作者:Ramon J. Alabaster、Ian F. Cottrell、David Hands、Guy R. Humphrey、Derek J. Kennedy、Stanley H. B. Wright
DOI:10.1055/s-1989-27329
日期:——
The synthesis of 6-(3-aryl-2-propenyl)-2,3-dihydro-5-hydroxybenzofuran derivatives by cross coupling between 6-bromo-2,3-dihydro-benzofurans and cinnamyl halides via organo-metallic compounds has been explored. Palladium catalysed reaction between benzofurylzinc bromides and cinnamyl acetates gave high yields of pure products, and the reaction was developed into an economic process for the large scale preparation of 2,3-dihydro-5-hydroxy-6-[3-(2-hydroxymethylphenyl)-2-propenyl]benzofuran, a topical anti-inflammatory agent.