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1-Methylpiperazine is used in the preparation of 2-(4-methyl-1-piperazinylmethyl)acrylophenone. It is involved in the preparation of 1-(4-methoxy-phenyl)-4-methyl-piperazine by reacting with 1-chloro-4-methoxy-benzene. It acts as an intermediate in the synthesis of active pharmaceutical ingredients like ofloxacin, rifampicin, clozapine, sildenafil, trifluoperazine and zopiclone. Further, it is used as a mimic template in the preparation of molecularly imprinted microspheres. In addition to this, it is used in the generation of difunctional strong anion-exchange stationary phase from a 1,4-diazacyclohexane derivative.
For preparation of a reagent for the high-yield reduction of esters to aldehydes, see Sodium bis(2-methoxyethoxy)aluminum hydride, A13292. Similarly, addition of the hydrochloride to Lithium aluminum hydride, A18116, gives a complex which can reduce carboxylic acids to aldehydes: J. Org. Chem., 49, 2279 (1984).
The N-lithio-derivative effects the O-alkyl cleavage of aromatic ortho-alkoxyaldehydes or ketones, without the need for carbonyl protection: Synth. Commun., 18, 191 (1988).
Li, H.; Le Moullec, Y.; Lu, J.; Chen, J.; Marcos, J. C. V.; Chen, G.; Chopin, F. CO2 solubility measurement and thermodynamic modeling for 1-methylpiperazine/water/CO2. Fluid Phase Equilib. 2015, 394, 118-128.
Kovalev, V. V.; Gorbunova, Y. E.; Kokunov, Y. V. Silver nitrate coordination polymer with 1-methylpiperazine: Synthesis and crystal structure. Russ. J. Inorg. Chem. 2015, 60 (7), 886-888.
Gefahrenhinweise (EU): H226-H302-H312-H331-H314-H318
Flammable liquid and vapour. Harmful if swallowed. Harmful in contact with skin. Toxic if inhaled. Causes severe skin burns and eye damage. Causes serious eye damage.
Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Do not breathe dusts or mists. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.