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); |
申请公布号 |
ZA9905877(B) |
申请公布日期 |
2001.01.02 |
申请号 |
ZA19990005877 |
申请日期 |
1999.09.13 |
申请人 |
FERRER INTERNATIONAL, S.A. |
发明人 |
RAFAEL FOGUET;JORDI BOLOS;AURELIO SACRISTAN;CASTELLO, JOSEP, M.;ORTIZ, JOSE, A. |
分类号 |
C07B61/00;C07D311/22 |
主分类号 |
C07B61/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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