In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 3,3′,5,5′-Tetramethyl-1H,1’H-4,4′-bipyrazole, other downstream synthetic routes, hurry up and to see.
Application of 4054-67-5, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 4054-67-5, name is 3,3′,5,5′-Tetramethyl-1H,1’H-4,4′-bipyrazole belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.
General procedure: ,3?,5,5?-Tetramethyl-4,4?-bipyrazole (Me4bpz) was synthesized according to literature methods [33], using acetyl acetone (Acros, 99+ %), sodium hydride (Acros, 60% dispersion in mineral oil), iodine (Sigma-Aldrich, 99.8%) as well as hydrazine hydrate (Merck, ca. 100%). Diethyl ether was dried with sodium/benzophenone and stored under nitrogen atmosphere. All other solvents were used as obtained. Diphenic acid (Acros, 99%) as well as the metal acetate hydrates were used as obtained from the distributors stated above. Metal acetate hydrates, diphenic acid and 3,3?,5,5?-tetramethyl-4,4?-bipyrazole were reacted under hydrothermal conditions (solvent volume: 5 ml) in amounts specified in Table 1 . The autoclaves of type 4749 (Parr, volume 23 ml, Teflon liner, Tmax = 250 C, pmax = 124 bar) were tempered using a drying oven ULE400 (Memmert) with RS232-interface and the control software CELSIUS2000 (Memmert). The reaction vessels were heated to 150 C within 10 h. After 20 h at 150 C the autoclaves were cooled to 25 C within 120 h with constant cooling rate. The generated crystalline solids were filtrated from the liquids and washed with 50 ml hot water and 50 ml hot methanol. Thereafter the products were dried at 120 C in a drying oven. All syntheses were performed at least two times to ensure reproducibility of the results.
In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 3,3′,5,5′-Tetramethyl-1H,1’H-4,4′-bipyrazole, other downstream synthetic routes, hurry up and to see.
Reference:
Article; Hunger, Jens; Inorganica Chimica Acta; vol. 397; (2013); p. 60 – 68;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics