In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 3080-99-7, name is 3,4-Dihydro-2H-benzo[b][1,4]thiazine, introducing its new discovery. COA of Formula: C8H9NS
The scandium rare earth catalyst in the alkylation reaction of the amine to the location in the application (by machine translation)
The present invention relates to rare earth catalyst in catalytic aromatic amine containing scandium para-selectivity of the alkylation reaction in the application, the structural formula of the scandium rare earth catalyst are as follows: Aromatic amine aromatic primary amine or aromatic secondary amine. The invention also discloses a method for alkylation of the amine of preparation method: formula (1) aromatic amines of the formula (2) of the olefin in the scandium rare earth under the action of catalyst, in organic solvent for 60 – 150 C lower reaction, to obtain the location of alkylated aromatic amine, the reaction route is as follows: Wherein R1 Hydrogen, aromatic itaconate C1 – C10 Alkyl; R2 Hydrogen, C1 – C4 Alkyl, C1 – C4 Alkoxy, aryl or halogen; and R2 Can not be substituted in the para position; X is methylene or sulfur atom, n1 for 0 – 4 in either a value; R3 For C1 – C20 Alkyl, aryl or R5 Through a number of methylene ring, the number of methylene n2 for 1 – 4 in either a value; R4 Hydrogen, C1 – C20 Alkyl, aryl, thienyl, benzofuranyl or substituted aryl group; R5 Hydrogen, methyl or methylene; R6 Is hydrogen. (by machine translation)
We¡¯ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, the role of 3080-99-7, and how the biochemistry of the body works.COA of Formula: C8H9NS
Reference£º
Thiazine – an overview | ScienceDirect Topics,
Thiazine | C4H5NS – PubChem