Description
Methylamine Hydrochloride
Methylamine hydrochloride is used as a building block for the synthesis of various organic compounds. Methylamine hydrochloride can be used as a reactant to synthesize: Betahistine via aza-Michael reaction with 2-vinylpyridine in water. It serves as a precursor for herbicides, insecticides, and drugs like ephedrine, acting as a versatile building block for various chemical
Key Characteristics and Uses
- Physical Form: Colorless or white, hygroscopic powder.
- Chemical Nature: A salt of methylamine, which is a weak base, often preferred over gaseous methylamine for ease of handling in reactions.
- Applications: It is used to synthesize pharmaceuticals (e.g., betahistine, theophylline), pesticides (e.g., carbofuran), and other nitrogen-containing compounds.
- Reactivity: Used in Mannich reactions, Aza-Diels–Alder reactions, and to form N-methylsecondary arylamines.
Safety and Handling
- Storage: Requires storage in a cool, dry, and well-ventilated area, tightly closed, due to its hygroscopic nature (absorbs water).
- Hazards: Causes skin irritation and serious eye irritation.
- Precautions: Avoid breathing dust, and use protective gloves and eye protection when handling.
Application
Methylamine hydrochloride can be used as a reactant to synthesize:
- Betahistine via aza-Michael reaction with 2-vinylpyridine in water.
- Azatripyrrolic and azatetrapyrrolic macrocycles by reacting with pyrrole and formaldehyde via base-catalyzed Mannich reaction.
- Tetrahydropyridines via Aza-Diels–Alder reaction with dienes and aldehydes. Formamide Fosfor
- N-methylsecondary arylamines from aryl chlorides via nickel-catalyzed amination reaction.
Properties
Cas Number: 593-51-1
Molecular Weight: 67.52
Beilstein: 3588822
EC Number: 209-795-0
Nacres: NA.22
Quality Level: 200
Assay: ≥98%
Form: Powder or crystals
bp: 225-230 °C/15 mmHg (lit.)
mp: 231-233 °C (lit.)
Solubility: H2O: 1 g in 10 mL, clear, colorless
SMILES string: Cl[H].CN
InChI: 1S/CH5N.ClH/c1-2;/h2H2,1H3;1H
InChI key: NQMRYBIKMRVZLB-UHFFFAOYSA-N
Synonym(s):
Methanaminium chloride, Methylamine monohydrochloride, Methylammonium chloride, Monomethylammonium chloride
Regulation
- Methylamine and its derivatives are on watchlists for chemical precursors in some jurisdictions due to potential use in clandestine drug synthesis (e.g., MDMA).
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