Storr, Alan et al. published their research in Canadian Journal of Chemistry in 1998 | CAS: 15953-73-8

4-Chloro-3,5-dimethyl-1H-pyrazole (cas: 15953-73-8) belongs to pyrazole derivatives. The 1H-pyrazole provides an excellent means by which to provide the requisite hydrogen bond acceptor閳ユ徆onor motifs, whether as a monocyclic ring or as a fused indazole ring. The presence of both electronegative nitrogen atoms in the pyrazole ring reduces the electron density of the C3- and C5-positions leaving electron density of C4-position unaltered. Thus the C4-position is vulnerable to electrophilic attack. The C3 electrophilic-position may undergo deprotonation in the presence of a strong base leading to ring opening.Recommanded Product: 15953-73-8

Transition metal azolates from metallocenes. Part 3: polymeric manganese(II) and nickel(II) pyrazolates; synthesis, characterization, and magnetochemistry was written by Storr, Alan;Summers, David A.;Thompson, Robert C.. And the article was included in Canadian Journal of Chemistry in 1998.Recommanded Product: 15953-73-8 This article mentions the following:

Direct reactions of nickelocene and manganocene with molten pyrazoles in an inert atm. or under vacuum gave the following metal pyrazolate compounds: [Ni(4-Xpz)2]x (X = H, Cl and pz = pyrazolate); [M(4-Xdmpz)2]x (X = Cl, Br and pzH = pyrazole). On the bases of indirect evidence all compounds are considered to have extended chain structures with metal ions linked in chains by double bridging pyrazolates. The two [Ni(4-Xpz)2]x compounds are diamagnetic compounds while all others are paramagnetic and reveal antiferromagnetic coupling between neighboring metal ions. Analyses of the magnetic data (Hamiltonian H = -2J 鍗?Si-Sj) yields values of the exchange coupling compounds and -0.41 cm-1 for the [Mn(4-Xpz)2(4-XpzH)]x compounds In the experiment, the researchers used many compounds, for example, 4-Chloro-3,5-dimethyl-1H-pyrazole (cas: 15953-73-8Recommanded Product: 15953-73-8).

4-Chloro-3,5-dimethyl-1H-pyrazole (cas: 15953-73-8) belongs to pyrazole derivatives. The 1H-pyrazole provides an excellent means by which to provide the requisite hydrogen bond acceptor閳ユ徆onor motifs, whether as a monocyclic ring or as a fused indazole ring. The presence of both electronegative nitrogen atoms in the pyrazole ring reduces the electron density of the C3- and C5-positions leaving electron density of C4-position unaltered. Thus the C4-position is vulnerable to electrophilic attack. The C3 electrophilic-position may undergo deprotonation in the presence of a strong base leading to ring opening.Recommanded Product: 15953-73-8

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics