Synthesis of pyrone carbaldehydes, pyrone sulfonium ylides and related epoxides
作者:Aziz Shahrisa、Mahnaz Saraei
DOI:10.1002/jhet.79
日期:2009.3
Hexaminium salts of 4-pyrones were synthesized by treatment of 2-(4-bromomethylphenyl)-6-methyl-4H-pyran-4-one and 2-(4-bromomethylphenyl)-6-phenyl-4H-pyran-4-one with hexamethyl-enetetramine in chloroform in 71 and 84% yields respectively. Hydrolysis of and in EtOH:H2O produced the corresponding aldehydes and in 43 and 58% yields respectively. The reaction of bromopyrones and with dimethylsulfide