Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 67604-48-2, Name is 5,7-Dihydroxy-2-(4-hydroxyphenyl)chroman-4-one, SMILES is O=C1CC(C2=CC=C(O)C=C2)OC3=C1C(O)=CC(O)=C3, belongs to pyrrolines compound. In a document, author is Feberero, Claudia, introduce the new discover, Product Details of 67604-48-2.
Experimental and Computational Study of the 1,5-O -> N Carbamoyl Snieckus-Fries-Type Rearrangement
The reactions of o-lithiated O-aryl N,N-diethylcarbamates with different C-N multiple bond electrophiles have been thoroughly studied. A 1,5-O -> N carbamoyl shift, a new variation of the anionic Fries-type rearrangement, takes place when nitriles, imines, or alkylcarbodiimides are employed. In these cases, the carbamoyl group plays a dual role as a directing group, building up a variety of functional groups through the 1,5-O -> N carbamoyl migration. On the other hand, the use of iso(thio)cyanates and arylcarbodiimides led to non-rearranged o-functionalized O-arylcarbamates. This reactivity was further computationally explored, and the governing factor could be traced back to the relative basicity of the alternative products (migrated vs nonmigrated substrates). This exploration also provided interesting insights about the degree of complexation of the lithium cations onto these substrates. A new access to useful 2-hydroxybenzophenone derivatives has also been developed.
The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 67604-48-2 is helpful to your research. Product Details of 67604-48-2.
Reference:
Pyrroline – Wikipedia,
,1-Pyrroline | C4H7N – PubChem