5a,10b-Dihydrobenzofuro[2,3-b]benzofuran type compounds and related products from P-substituted phenols and glyoxal
作者:Ali Rahmatpour
DOI:10.1002/jhet.408
日期:——
Condensationreactions of glyoxal with p-substituted phenol derivatives have been carried out and the corresponding 5a,10b-dihydrobenzofuro[2,3-b]benzofuran type compounds were obtained in good to excellent yields. The resulting dimeric products carrying methyl groups were converted to the corresponding carboxylic acid derivatives as the new polymer forming monomers. Many of these reactions gave novel