3492-46-4

Basic information

• Product Name: 1,3,2-Benzodioxaphosphole,2-bromo-,2-oxide
• CAS NO: 3492-46-4
• Molecular Weight: 234.974
• Mol File: 3492-46-4.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: 1,3,2-Benzodioxaphosphole,2-bromo-,2-oxide (CAS DataBase Reference)
• NIST Chemistry Reference: 1,3,2-Benzodioxaphosphole,2-bromo-,2-oxide (3492-46-4)
• EPA Substance Registry System: 1,3,2-Benzodioxaphosphole,2-bromo-,2-oxide (3492-46-4)

Safety Data

• Hazardous Substances Data: 3492-46-4(Hazardous Substances Data)

Upstream product

• 106-89-8 epichlorohydrin 
• 3712-44-5 2,2,2-tribromo-1,3,2-benzodioxaphosphole 
• 74745-91-8 2,2-Dibromo-2-(2,2-dimethyl-propoxy)-1,3-dioxa-2λ⁵-phospha-indan 
• 129416-45-1 2,2-bis(2,3,3,3-tetrabromoethoxy)-2-(2,2,3,3-tetrafluoropropoxy)-1,3,2λ⁵-benzodioxaphosphole 
• 58046-88-1 2,2-dibromo-2-ethoxy-4,5-benzo-1,3,2-dioxaphospholane 
• 115-17-3 bromal 
• 13121-31-8 2-tert-butoxy-4,5-benzo-1,3,2-dioxaphospholane 

Relevant articles and documents

Reaction of ortho-Phenylenedioxytrihalophosphoranes with Epichlorohydrin

Dynamic 31P NMR spectroscopy was applied to investigate the reactions of o-phenylenedioxytrihalophosphoranes and bis(o-phenylenedioxy)halophosphoranes with epichlorohydrin as a function of the reagent ratio. α-Opening of the epoxide ring predominantly occurs. With excess epichlorohydrin the reaction with o-phenylenedioxytrichlorophosphorane results in formation of pentaalkoxyphosphorane, while in the reaction with o-phenylenedioxytechintribromophosphorane a mixture of phosphate and pentaalkoxyphosphorane is formed.

REACTION OF 2-TERT-BUTOXY-4,5-BENZO-1,3,2-DIOXAPHOSPHOLANE WITH TRIBROMOACETALDEHYDE

The reaction of 2-tert-butoxy-4,5-benzo-1,3,2-dioxaphospholane with tribromoacetaldehyde proceeds by initial halophilic attack on the bromine atom, leading to a product with retention of the P-Br bond (pyrocatechol bromophosphate) and an anion exchange product (pyrocatechol dibromovinylphosphate), and by initial attack at the carbon atom of the C=O group, which is accompanied by the elimination of isobutylene to form an α-hydroxyphosphonate.