30419-67-1

Basic information

• Product Name: (2R,2'R)-2β,2'β-Bi[oxirane]
• Synonyms: (2R,2'R)-2β,2'β-Bi[oxirane];1,2:3,4-Dianhydro-D-threitol;2,2'-Bi[(2R)-oxirane];(R-(R*,R*))-2,2'-Bioxirane;2,2'-Bioxirane, (R-(R*,R*))- (9ci);2R:3R-Diepoxybutane;Butane, D-1,2:3,4-diepoxy-;D-Diepoxybutane
• CAS NO: 30419-67-1
• Molecular Formula: C₄H₆O₂
• Molecular Weight: 86.08924
• Mol File: 30419-67-1.mol
• Article Data: 16

Chemical Properties

• Boiling Point: 138°Cat760mmHg
• Flash Point: 45.6°C
• Appearance: /
• Density: 1.383g/cm³
• CAS DataBase Reference: (2R,2'R)-2β,2'β-Bi[oxirane](CAS DataBase Reference)
• NIST Chemistry Reference: (2R,2'R)-2β,2'β-Bi[oxirane](30419-67-1)
• EPA Substance Registry System: (2R,2'R)-2β,2'β-Bi[oxirane](30419-67-1)

Safety Data

• Hazardous Substances Data: 30419-67-1(Hazardous Substances Data)

Usage

General Description

(2R,2'R)-2β,2'β-Bi[oxirane], also known as dibromodioxirane, is a synthetic organic compound with the molecular formula C4H6Br2O2. It is an epoxide compound that contains two oxirane rings, each of which is attached to a bromine atom. Dibromodioxirane is a highly reactive and powerful oxidizing agent that is commonly used in organic synthesis as a versatile reagent for various oxidation reactions. It is known for its ability to selectively oxidize various functional groups, including alkenes, alcohols, and sulfides, making it a useful tool in the preparation of complex organic molecules. However, due to its high reactivity and potential hazards, it must be handled and used with caution in a controlled laboratory environment.

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Relevant articles and documents

Chiroptical properties of 2,2’-bioxirane

The two enantiomers of 2,2′-bioxirane were synthesized, and their chiroptical properties were thoroughly investigated in various solvents by polarimetry, vibrational circular dichroism (VCD), and Raman optical activity (ROA). Density functional theory (DFT) calculations at the B3LYP/aug-cc-pVTZ level revealed the presence of three conformers (G+, G?, and cis) with Gibbs populations of 51, 44, and 5% for the isolated molecule, respectively. The population ratios of the two main conformers were modified for solvents exhibiting higher dielectric constants (G? form decreases whereas G+ form increases). The behavior of the specific optical rotation values with the different solvents was correctly reproduced by time-dependent DFT calculations using the polarizable continuum model (PCM), except for the benzene for which explicit solvent model should be necessary. Finally, VCD and ROA spectra were perfectly reproduced by the DFT/PCM calculations for the Boltzmann-averaged G+ and G? conformers.

METHOD FOR REPROCESSING MIXTURES CONTAINING BIS-EPOXIDE

The invention relates to a method for reprocessing mixtures containing (a) one or several bis-epoxides of general formula (I), wherein R1 and R2 are identical or different and are selected among hydrogen and C1-C3 alkyl, (b) one or several organic solvents, (c) water, and (d) other optional compounds. The inventive method is characterized in that the mixture is subjected to an at least two-stage distillation process, at least one bis-epoxide (a) being converted into the gas phase in at least one stage.

METHOD FOR THE PRODUCTION OF BISEPOXIDES AND DITHIOLS

The invention relates to a method for the production of bisepoxides, characterised in that a conjugated diene of formula (I) is reacted with at least one peroxide with the application of up to 4 equivalents of peroxide per C-C double bond, where R1 is selected from hydrogen and C1-C12 alkyl, unsubstituted or substituted with one or several SH or OH groups, in the presence of a catalyst, obtained by the bringing into contact of at least one manganese compound, selected from A2MnX4, AMnX3, MnY, MnX2 and MnX3 with at least one ligand L, of general formula (II), whereby the variables have the following definitions: X may be the same or different and is selected from monovalent anions, Y is a divalent anion, A is selected from alkali metals and optionally alkylated ammonium, R2 may be different or preferably the same and selected from C1-C20 alkyl and at least one co-ligand, derived from monocarboxylic acids, di- or poly-carboxylic acids or diamines.