What is ethat cloud miner

1. Esterification may occur

2.

bus route: No.71 → k902 → Jichang bus No.2 → Changqing K102 north line, the whole journey is about 65.9km

1. Walk about 1.2km from Xiaoqinghe North Road to Mengjia station

2. Take No.71, pass 18 stops to Quanfu overpass station

3. Walk about 300m to Quanfu overpass east station

4. Take k902, pass 1 stop, 5. Walk about 200 meters to the South Station of Jinan long distance bus terminus; 6. Take Ji Chang bus No.2, pass 12 stops, reach Ivy League station; 7. Walk about 240 meters to Ivy League East Gate Station; 8. Take Changqing K102 Road North line, pass 15 stops, reach the attached station; 9. Walk about 130 meters to Jinan west driving test center

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Shijiazhuang science and technology center near the bus stop, see the screenshot:

4. Benzenetrialdehyde is an important organic synthesis and pharmaceutical intermediate. Because of the existence of three carbonyl groups with the same properties and different orientations in its structure, it can synthesize covalent organic frameworks (cof-300, cof-42) with a variety of chain amine compounds (such as p-phenylenediamine, 2,5-diethoxyterephthalic acid dihydrazide) under specific conditions, These porous materials have predictable rigid molecular framework structure, light weight, large surface area, good thermal and chemical stability, and have broad application prospects in gas storage, photoelectric conction and Catalytic Applications (j.am.chem.soc., 201113319816-19822; j.am.chem.soc., 201113319816-19822; j.am.chem.soc., 201113319816-19822; J; J.Am.Chem.Soc.,2011,133:11478-11481. In addition, the dendrimers derived from benzenetrialdehyde can be used as heterogeneous catalysts because they contain a large number of active functional groups; Benzenetrialdehyde can also react with ketones to synthesize chalcone compounds, which have great structural flexibility and can bind to a variety of receptors, and thus have a wide range of biological activities in antiviral, antitumor, inhibition and scavenging oxygen free radicals (bioorg. Med. Chem. Lett., 2003,13:1813-1815; Pharm.Res.,1998,15:39-46 Med.Chem.,2003,46:2813-281. The price of benzenetrialdehyde with purity of 95% is usually about 3000-4000 yuan / g, so laboratories often meet their own needs through synthesis methods. The existence of multiple carbonyl groups increases the difficulty of its synthesis and preservation
at present, there are three main methods for the preparation of phloroglucinol: I) 1,3,5-tris (Dibromomethyl) benzene is prepared from phloroglucinol as the initial reactant, and then phloroglucinol is prepared. Liquid bromine is used as reactant to prepare 1,3,5-tris (Dibromomethyl) benzene by this synthetic method. This kind of raw material is not only very volatile and highly oxidizing, but also highly corrosive and toxic. Every drop of bromine will give off a lot of heat. It is also necessary to control the dropping speed of liquid bromine to prevent coking caused by too fast dropping; Fuming sulfuric acid is also used in the synthesis of phloroglucinol. The operation process needs special care, and the yield is often low. II) using 2,2-dimethylpropionic anhydride and hydrogen as recing agents, using tetrakis (triphenylphosphine) platinum as catalyst to rece pyromellitic acid. In addition to procing trimethylaldehyde, the reaction also proces o-phthalaldehyde, and requires precious metal catalysts,

5. It's hard for those who have money to take a taxi