Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 81945-73-5, name is 1H-Pyrazol-1-ol, A new synthetic method of this compound is introduced below., SDS of cas: 81945-73-5
(General Procedure 16)4-Methyl-piperazine-1-carboxylic Acid pyrazol-1-yl Ester The title compound was prepared from 1-hydroxypyrazole and N-methylpiperazine applying the general procedure 16. The crude product was purified by preparative HPLC (water-acetonitrile-0.1% TFA) (17%, salt with TFA). 1H NMR (300 MHz; CDCl3): delta 2.36 (s, 3H), 2.50 (bt, 4H), 3.59 (bs, 2H), 3.71 (bs, 2H), 6.31 (t, 1H), 7.38 (dd, 1H), 7.40 (dd, 1H); HPLC-MS: m/z=211.0 (M+1); Rt=0.40 min.
The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.
Reference:
Patent; Ebdrup, Soren; de Jong, Johannes Cornelis; Jacobsen, Poul; Hansen, Holger Claus; Vedso, Per; US2003/166644; (2003); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics