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CAS RN: 632-69-9 | 产品编码: R0041

Acid Red 94


纯度/分析方法:
别名:
  • 酸性红94
  • 玫瑰红钠盐
  • Rose Bengal
文档:
25G
¥420.00
≥20  6   ≥20 
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产品编码 R0041
分子式/分子量 C__2__0H__2Cl__4I__4Na__2O__5 = 1,017.63  
外观与形状(20°C) 固体
应避免的情况
CAS RN 632-69-9
Reaxys-RN 3645857
PubChem物质ID 87575611
颜色 45440
MDL编号

MFCD00151169

技术规格
Appearance Dark red to Brown powder to crystal
Lambda max. 547.0 to 551.0 nm(0.02mol/L AcONH4 sol.)
Absorbance(E1%1cm) min. 900(0.02mol/L AcONH4 sol., 547.0 to 551.0 nm)
物性(参考值)
最大吸收波长 549(0.02mol/L AcONH4 sol.) nm
GHS
相关法规
RTECS# LM5920000
运输信息
监管条件代码(*)
应用
Reagent for thrombosis model

References


应用
A One-Pot Transformation of Furans to Nitrogen-Bearing Aromatic Polycycles Initiated by Singlet Oxygen

R0041

Typical Procedure (R1=CH3, R2=R3=H): 2-Methylfuran (82.1mg, 1.0 mmol) is dissolved in methanol (6 mL) containing rose Bengal (102 mg, 0.1 mmol). The solution is cooled with an ice bath. Oxygen gas is gently bubbled through the solutions while it is irradiated with a xenon Variac Eimac Cermax 300 W lamp. After completion of the reaction (usually 8 min), methyl sulfide (249 mg, 4.0 mmol) is added for the reduction of the hydroperoxy group. After completion of the reduction (1 h), homoveratrylamine [D0678] is added (145 mg, 0.8 mmol) and the mixture is stirred for 30 min at room temperature. After the formation of the intermediate 2-pyrrolidinone, methanol is replaced by CH2Cl2 (4 mL). TFA (91.2 mg, 0.8 mmol) is added in CH2Cl2 (2 mL) and the mixture was stirred for 6 more hours at room temperature. After concentration of the solution, the product is purified by silica gel flash column chromatography (eluent: petroleum ether:EtOAc = 1:1) to give the desired aromatic tricyclic product (125 mg, 60%).

References


参考文献


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