Vat Blue 4 synthesis
- Product Name:Vat Blue 4
- CAS Number:81-77-6
- Molecular formula:C28H14N2O4
- Molecular Weight:442.42
82-45-1
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$9.00/25g
81-77-6
156 suppliers
$21.00/1g
Yield:81-77-6 80%
Reaction Conditions:
with cesium hydroxide;DBN in 1,2-dichloro-benzene at 160; for 12 h;
Steps:
1 Embodiment 1
In the 500 ml round-bottom flask cesium hydroxide is added in (134.9g, 0 . 90mol), 1,5-diaza macrobicyclic [4.3.0] nona-5-ene (148.7,1 . 20mol) and ortho-dichlorobenzene (180g), nitrogen protection, heating under stirring to 100 °C, when the solid completely dissolved, add 1-amino-anthraquinone (66.9g, 0 . 30mol), is omitted, raising the temperature to 160 °C reaction, silica gel thin layer chromatography (TLC) tracking to the raw point disappeared (about 12h), stop heating, natural cooling to room temperature, after diluting adds the methyl alcohol filtering, the filter cake is washed with methanol washing to no obvious odor, obtained after drying 54g dark blue solid, yield 80%.
References:
Nantong Hengsheng Fine Chemical Co., Ltd.;Chen, Yongjia;Zou, Panpan;Zhou, Zhangkai;Tao, Xuesong;Hou, Jiaqi CN105778553, 2016, A Location in patent:Paragraph 0034; 0035
117-79-3
170 suppliers
$14.00/1g
81-77-6
156 suppliers
$21.00/1g
117-79-3
170 suppliers
$14.00/1g
72-48-0
403 suppliers
$16.80/25G
81-77-6
156 suppliers
$21.00/1g
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16135-99-2
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