Preparation of 1,2-dibromobenzene_Kain Industrial Additive
Background and overview[1] 1,2-Dibromobenzene is also called o-dibromobenzene. O-dibromobenzene is a colorless or light yellow liquid, soluble in ethanol, easily soluble in ether, acetone, benzene and carbon tetrachloride, insoluble in water, and can be used in organic synthesis or dye intermediates. Preparation[1] The traditional production method of o-dibromobenzene is through a two-step method of diazotization and decomposition reaction. The dropping reaction temperature of 1-10°C cannot produce…
Preparation of 1,4-bis[2-(4-methyl-5-phenyloxazole)]benzene_Kain Industrial Additive
Background and overview[1] 1,4-bis[2-(4-methyl-5-phenyloxazole)]benzene can be used as a pharmaceutical synthesis intermediate. If 1,4-bis[2-(4-methyl-5-phenyloxazole)]benzene is inhaled, move the patient to fresh air; if skin contact occurs, remove contaminated clothing and wash with soap and water. Rinse skin thoroughly with water and seek medical attention if you feel discomfort. If eye contact occurs, separate eyelids, rinse with running water or saline, and seek medical attention immediately. If…
Preparation of 1,5-dibromo-2,4-dibromomethylbenzene_Kain Industrial Additive
Background and overview[1][2] 1,5-Dibromo-2,4-dibromomethylbenzene can be used as a pharmaceutical synthesis intermediate, such as the preparation of organic electroluminescent device compounds: when the compound is used as a matrix material for fluorescent or phosphorescent emitters , this compound leads to very high efficiency and long life. This applies in particular if the compound is used as a matrix material for red or green phosphorescent emitters. When…
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Preparation of 1,5-difluoro-2,4-dinitrobenzene_Kain Industrial Additive
Overview[1] 1,5-Difluoro-2,4-dinitrobenzene is an important intermediate in the synthesis of the herbicide flufenacil, which can be etherified, hydrogenated and reduced to form rings, and sequentially combined with propylamine bromide. React with acid anhydride to obtain propargyl flufenate. At the same time, because its structure contains two nitro groups and two fluorine groups, the nitro group is an energetic group, and the fluorine group can be further…
Preparation of 1,1′-bis(diphenylphosphino)ferrocene palladium dichloride II_Kain Industrial Additive
Overview[1] 1,1′-Bis(diphenylphosphino)ferrocene palladium dichloride II is widely used as a catalyst in the fields of organic chemistry, pharmaceutical chemistry and liquid crystal material synthesis. At present, its main synthesis methods are: 1) reaction method between palladium chloride (K, Na, Li salt) and dppf, 2) palladium chloride and acetonitrile (benzonitrile) complex and dppf ligand exchange method. Method 1 utilizes the reaction of palladium chloride and sodium chloride…
Preparation of 1,4-bis(diphenylphosphine)butane_Kain Industrial Additive
Overview[1] Organophosphine ligands are one of the most widely used and versatile ligands in contemporary homogeneous catalysis, and are widely used in many fields such as basic theoretical research and large-scale industrial production. Compared with other ligands, organophosphine ligands have superior electronic effects and three-dimensional spatial effects, and can form complexes with many metal salts with novel spatial structures and excellent catalytic properties. Therefore, the synthesis…
Preparation of 1,2-diphenoxyethane (DPE)_Kain Industrial Additive
Background and overview[1] 1,2-Diphenoxyethane (DPE) has attracted much attention as a new heat-sensitive material sensitizer and a potential polyolefin catalyst additive. There are only a few literature reports on the synthesis of 1,2-diphenoxyethane, which is mainly prepared by reacting phenol with 1,2-dichloroethane or ethylene glycol sulfonate as starting materials in alkaline water or ethanol medium. , the yield is reported to be up to 80%, but…
Preparation of 1,3-diphenyl urea_Kain Industrial Additive
Background and overview[1] 1,3-Diphenylurea is a urea compound. Urea refers to a compound containing R1R2N-CO-NR1R2 functional group. It is an artificial The first type of organic compound synthesized. Due to its very good reactivity, urea is an important synthon in synthetic chemistry. Urea has excellent biological activity and is widely found in natural products, drugs and pesticide molecules. In addition, urea is also used as a…
