1194-33-8

Basic information

• Product Name: 3,3-dimethylpiperidine-2,6-dione
• Synonyms: 2,6-piperidinedione, 3,3-dimethyl-; 3,3-Dimethylpiperidine-2,6-dione
• CAS NO: 1194-33-8
• Molecular Formula: C₇H₁₁NO₂
• Molecular Weight: 141.1677
• Mol File: 1194-33-8.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 268°C at 760 mmHg
• Flash Point: 125.3°C
• Density: 1.054g/cm³
• Vapor Pressure: 0.0079mmHg at 25°C
• Refractive Index: 1.45
• CAS DataBase Reference: 3,3-dimethylpiperidine-2,6-dione(CAS DataBase Reference)
• NIST Chemistry Reference: 3,3-dimethylpiperidine-2,6-dione(1194-33-8)
• EPA Substance Registry System: 3,3-dimethylpiperidine-2,6-dione(1194-33-8)

Safety Data

• Hazardous Substances Data: 1194-33-8(Hazardous Substances Data)

Upstream product

• 74-85-1 ethene 
• 75-09-2 dichloromethane 
• 594-11-6 methylcyclopropane 
• 82621-80-5 2,2-dimethyl-N-bromoglutarimide 
• 75-19-4 cyclopropane 

Downstream Products

• 1193-12-0 3,3-dimethylpiperidine 
• 848132-91-2 2,2-dimethyl-5-oxo-phenylpentanamide 
• 27832-58-2 3,3-dimethylpiperidine hydrochloride 
• 4045-30-1 4,4-dimethylpiperidine 
• 83928-76-1 gepirone 

Relevant articles and documents

Absolute Rate Constants for Bromine Abstraction from N-Bromoimides and Br2 by Alkyl Radicals

Imidyl radicals react with cyclopropanes solely via hydrogen abstraction.In the case of methylcyclopropane, the major product (cyclopropylcarbinyl bromide) is derived from abstraction of hydrogen from the methyl group.The resultant cyclopropylcarbinyl radical is partioned between two pathways: (1) abstraction of Br from N-bromoimide and (2) rearrangement to the allylcarbinyl radical (eventually yielding 4-bromo-1-butene).Since the absolute rate of the rearrangement is known, an absolute rate constant for the abstraction of Br from N-bromoimides by alkyl radicals can be derived (CH2Cl2 solvent, 15 deg C), k ca. (1.3-1.6)1xE10 M-1s-1.Reactions carried out in the presence of Br2 provide a third pathway for scavenging of the cyclopropylcarbinyl radical, providing kBr2=2.2x1E10 M-1s-1.Thus, trapping of primary R. by either N-bromoimides or Br2 occurs at rates that are diffusion-controlled.