发明名称 |
Process for preparing 3-hydroxymethyl chromen-4-ones |
摘要 |
3-(Hydroxymethyl)chromen-4-ones of formula (I) are described and a process for preparing said compounds. The process consists in reacting the compounds of general formula (II) wherein R is hydrogen, halogen, alkyl having 1 to 4 carbon atoms or alkoxy having 1 to 4 carbon atoms optionally substituted by phenyl or halogen, with formaldehyde and a basic catalyst followed by dehydration in an acid medium to form 3-(hydroxymethyl)chromen-4-ones of general formula (I), wherein R is as defined for (II);
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申请公布号 |
US6348605(B1) |
申请公布日期 |
2002.02.19 |
申请号 |
US20010787113 |
申请日期 |
2001.06.14 |
申请人 |
FERRER INTERNACIONAL, S.A. |
发明人 |
FOGUET RAFAEL;BOLOS JORDI;SACRISTAN AURELIO;CASTELLO JOSEP M.;ORTIZ JOSé A. |
分类号 |
C07B61/00;C07D311/22;(IPC1-7):C07D311/22 |
主分类号 |
C07B61/00 |
代理机构 |
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代理人 |
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地址 |
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