天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
010-86108875
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List Vat Blue 4
81-77-6

Vat Blue 4 synthesis

7synthesis methods
(a) in potassium nitrate, LvSuanJia, glucose or organic acid salt (such as formic acid potassium or acetic acid potassium or the mixture of both) under the existence of, with potassium hydroxide treatment 2-Aminoanthracene-9,10-dione;
-

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

FullText

Vat Blue 4 Related Search: