1) hydroxycounarin
羟基香豆素
2) hydroxycoumarin
羟基香豆素
1.
The condensation reaction of 4-hydroxycoumarin with each of a~h substituted benzalacetones in(absolute) ethanol gave coumarin analogues which were subsequently converted to their ethyl ethers(cyclocou-(marin)).
华法林的合成是通过4-羟基香豆素与苯丁烯酮在碱催化下,经M ichael加成反应制得。
3) 4-hydroxylcoumarin
4-羟基香豆素
4) daphnetin
7,8-二羟基香豆素
5) 7-hydroxycoumarin
7-羟基香豆素
1.
Ten novel 7-alkoxylcoumarins were synthesized by Williamson reaction of 7-hydroxycoumarin(1) or 7-hydroxy-4-methylcoumarin(2) and five alkyl halides using tetrabutylammonium bromide(TBAB) as a phase transfer catalyst.
以四正丁基溴化铵(TBAB)作相转移催化剂,7-羟基香豆素(1)或7-羟基-4-甲基香豆素(2)与5种卤代烃经Williamson反应合成了10个新的7-烷氧基香豆素,其结构经1H NMR,IR和MS表征。
2.
The coumarin derivatives were synthysized from 7-hydroxycoumarin by the Williamson etherification reaction and fluorination.
课题以7-羟基香豆素为原料,以对甲苯磺酸三氟乙酯(TsOCH_2CF_3)为烷基化试剂,合成7-(2,2,2-三氟乙氧基)香豆素和8-烯丙基-7-(2,2,2-三氟乙氧基)香豆素。
6) 4,7-dihydroxycoumarin
4,7-二羟基香豆素
参考词条
补充资料:羟基香豆素
分子式:
CAS号:
性质:香豆素的羟基衍生物,有多种异构体,皆为无色晶体。3-羟基香豆素,熔点152℃。4-羟基香豆素,熔点210~212℃,与苯并-2-羟基-γ-吡喃酮互为互变异构体,遇三氯化铁显棕色。5-羟基香豆素,熔点229℃,遇三氯化铁显蓝紫色。6-羟基香豆素,熔点249℃。7-羟基香豆素,又名伞形酮(umbelliferone),熔点220℃。8-羟基香豆素,熔点160℃,遇三氯化铁显蓝绿色。大多溶于乙醇、乙醚等有机溶剂。遇碱则开环水解。用作有机合成试剂。
CAS号:
性质:香豆素的羟基衍生物,有多种异构体,皆为无色晶体。3-羟基香豆素,熔点152℃。4-羟基香豆素,熔点210~212℃,与苯并-2-羟基-γ-吡喃酮互为互变异构体,遇三氯化铁显棕色。5-羟基香豆素,熔点229℃,遇三氯化铁显蓝紫色。6-羟基香豆素,熔点249℃。7-羟基香豆素,又名伞形酮(umbelliferone),熔点220℃。8-羟基香豆素,熔点160℃,遇三氯化铁显蓝绿色。大多溶于乙醇、乙醚等有机溶剂。遇碱则开环水解。用作有机合成试剂。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。