4222-21-3

Basic information

• Product Name: 3-chloro-3-methyl-3H-diazirene
• Synonyms: 3-Chloro-3-methyl-3H-diazirene; 3H-diazirine, 3-chloro-3-methyl-; 3-Methyl-3-chlorodiazirene; 3-Methyl-3-chlorodiazirine
• CAS NO: 4222-21-3
• Molecular Formula: C₂H₃ClN₂
• Molecular Weight: 90.5116
• Mol File: 4222-21-3.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 45.8°C at 760 mmHg
• Density: 1.54g/cm³
• Vapor Pressure: 358mmHg at 25°C
• Refractive Index: 1.607
• CAS DataBase Reference: 3-chloro-3-methyl-3H-diazirene(CAS DataBase Reference)
• NIST Chemistry Reference: 3-chloro-3-methyl-3H-diazirene(4222-21-3)
• EPA Substance Registry System: 3-chloro-3-methyl-3H-diazirene(4222-21-3)

Safety Data

• Hazardous Substances Data: 4222-21-3(Hazardous Substances Data)

Upstream product

• 124-42-5 acetamidine hydrochloride 

Downstream Products

• 75-05-8 acetonitrile 
• 75-01-4 chloroethylene 
• 31304-51-5 1-chloro-1-methylcarbene 
• 98288-15-4 methyl 2-methoxycinnamate 
• 21181-48-6 1-chloro-1,2,2,3,3-pentamethylcyclopropane 
• 122567-46-8 C₇H₈ClN 

Relevant articles and documents

Tracking "invisible" alkylchlorocarbenes by their σ → p absorptions: Dynamics and solvent interactions

Contrary to implications in the literature, the σ → p absorptions of alkylchlorocarbenes (RCCl) are readily acquired by laser flash photolysis with UV-vis detection in solution at ambient temperature. Examples include RCCl with R = methyl, benzyl, t-butyl, 1-adamantyl, and cyclopropyl. These absorptions permit direct monitoring of carbene reactions and the formation of carbene-solvent complexes. The kinetics of the reactions of "free" and complexed MeCCl and PhCH2CCl were directly followed with tetramethylethylene and 1-hexene. Particularly effective complexation was provided by anisole and 1,3-dimethoxybenzene, which modulated the rates of intermolecular carbene additions. Computational studies are presented, which aid in understanding the carbene absorption spectra and the nature of the solvent complexes.