@article{oai:niigata-u.repo.nii.ac.jp:00001696,
 author = {Hagiwara, Hisahiro and Fujimoto, Norikazu and Suzuki, Toshio and Ando, Masayoshi},
 issue = {3},
 journal = {Heterocycles},
 month = {Mar},
 note = {Methylenebis (4-hydroxy-2-pyrone) or methylenebis (4-hydroxycoumarin) derivatives (5) have been synthesized from 4-hydroxy-2-pyrones or 4-hydroxycoumarin (3) with aldehydes (4) by organic solid state reaction.},
 pages = {549--552},
 title = {Synthesis of methylenebis(4-hydroxy-2-pyrone) or methylenebis (4-hydroxycoumarin) Derivatives by organic solid state reaction},
 volume = {53},
 year = {2000}
}