7-Hydroxy-2,3-dihydro-1H-cyclopenta[c]chromen-4-one synthesis
- Product Name:7-Hydroxy-2,3-dihydro-1H-cyclopenta[c]chromen-4-one
- CAS Number:21260-41-3
- Molecular formula:C12H10O3
- Molecular Weight:202.21
10472-24-9
464 suppliers
$6.00/10g
108-46-3
796 suppliers
$10.00/10g
21260-41-3
33 suppliers
$60.00/100mg
Yield: 57.4%
Reaction Conditions:
with bismuth(III) nitrate at 80; for 4 h;
Steps:
1.3
3) 7.1 g (50 mmol) of 2-oxocyclopentanecarboxy- late methyl ester, 5.5 g (50 mmol) of resorcinol and bismuth nitrate pentahydrate were heated to 80° C. and the reaction was carried out for 4 hours. Afier the reaction was completed, the reaction mixture was cooled to room temperature and the reaction liquid was poured into water and yellowish solid was precipitated. Stirring was performed for 30 mm and filtration leadto solid. Recrystallizationwith 95% ethanol gave 5.8 g of white solid. The yield was 5 7.4%.
References:
Zhang, Guisen;Chen, Yin;Xu, Xiangqing;Liu, Xin;Zhao, Song;Liu, Bifeng;Yu, Miquan;Qiu, Yinli US2014/171442, 2014, A1 Location in patent:Paragraph 0076
611-10-9
409 suppliers
$10.00/5g
108-46-3
796 suppliers
$10.00/10g
21260-41-3
33 suppliers
$60.00/100mg
124-04-9
1052 suppliers
$6.00/25g
21260-41-3
33 suppliers
$60.00/100mg
627-93-0
497 suppliers
$5.00/25g
21260-41-3
33 suppliers
$60.00/100mg
141-28-6
374 suppliers
$10.00/100g
21260-41-3
33 suppliers
$60.00/100mg