Month: July 2024

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Article, Beilstein Journal of Organic Chemistry called Synthesis of 4-amino-5-fluoropyrimidines and 5-amino-4-fluoropyrazoles from a β-fluoroenolate salt, Author is Lucas, Tobias; Dietz, Jule-Philipp; Opatz, Till, which mentions a compound: 1416372-67-2, SMILESS is NC1=NC(C)=NC=C1F, Molecular C5H6FN3, Category: cinnoline.

A synthesis of fluorinated pyrimidines I [R = H, OMe, Ph, etc.] under mild conditions from amidine hydrochlorides and potassium 2-cyano-2-fluoroethenolate was developed. A broad substrate scope was tested and mostly excellent yields were obtained. The synthesis of fluorinated aminopyrazoles from the same fluorinated precursor could be demonstrated but proceeded with lower efficiency.

《Synthesis of 4-amino-5-fluoropyrimidines and 5-amino-4-fluoropyrazoles from a β-fluoroenolate salt》 provides a strategy for the preparation of materials with excellent comprehensive properties, which is conducive to broaden the application field of this compound(5-Fluoro-2-methylpyrimidin-4-amine)Category: cinnoline.

Reference:
Cinnoline – Wikipedia,
Cinnoline – an overview | ScienceDirect Topics

Reference of 2,3-Dihydrocinnolin-4(1H)-one hydrochloride. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 2,3-Dihydrocinnolin-4(1H)-one hydrochloride, is researched, Molecular C8H9ClN2O, CAS is 137195-33-6, about Synthesis of new derivatives of [1,2,5]triazepino[1,2-a]cinnoline. I. Synthesis of 4-oxo-1,2,3,4-tetrahydrocinnoline hydrochlorides.

The title cinnolines (I, R1 = R3 = R4 = H, R2 = H, Cl, Me; R1 = R2 = R3 = H, R4 = Cl, Me, OMe; R1 = R4 = H, R2 = R3 = OMe; R2 = R3 = R4 = H, R1 = Cl) were prepared by reduction of appropriately substituted 4-hydroxycinnlines (70-80% yields) and 4-hydroxy-3-cinnolinecarboxylic acids (55-67% yields) with Zn dust in AcOH-EtOH.

After consulting a lot of data, we found that this compound(137195-33-6)Reference of 2,3-Dihydrocinnolin-4(1H)-one hydrochloride can be used in many types of reactions. And in most cases, this compound has more advantages.

Reference:
Cinnoline – Wikipedia,
Cinnoline – an overview | ScienceDirect Topics