204905-77-1

Basic information

• Product Name: 2,3-DIHYDROTHIENO[3,4-B][1,4]DIOXINE-5-CARBALDEHYDE
• Synonyms: 2,3-DIHYDROTHIENO[3,4-B][1,4]DIOXINE-5-CARBALDEHYDE;3,4-Ethylenedioxothiophene-2-carbaldehyde;Thieno[3,4-b]-1,4-dioxin-5-carboxaldehyde, 2,3-dihydro-;2-Formyl-3,4-ethylenedioxythiophene;3,4-Ethylenedioxythiophene-2-carboxaldehyde;2,3-Dihydrothieno[3,4-b]-1,4-dioxin-5-carbaldehyde;2,3-dihydrothieno[3,4-b][1,4]dioxine-5-carbaldehy
• CAS NO: 204905-77-1
• Molecular Formula: C₇H₆O₃S
• Molecular Weight: 170.19
• Mol File: 204905-77-1.mol
• Article Data: 2

Chemical Properties

• Melting Point: 138 °C
• Boiling Point: 311.199 °C at 760 mmHg
• Flash Point: 142.009 °C
• Appearance: /
• Density: 1.424 g/cm³
• Vapor Pressure: 0.000572mmHg at 25°C
• Refractive Index: 1.623
• Storage Temp.: under inert gas (nitrogen or Argon) at 2–8 °C
• CAS DataBase Reference: 2,3-DIHYDROTHIENO[3,4-B][1,4]DIOXINE-5-CARBALDEHYDE(CAS DataBase Reference)
• NIST Chemistry Reference: 2,3-DIHYDROTHIENO[3,4-B][1,4]DIOXINE-5-CARBALDEHYDE(204905-77-1)
• EPA Substance Registry System: 2,3-DIHYDROTHIENO[3,4-B][1,4]DIOXINE-5-CARBALDEHYDE(204905-77-1)

Safety Data

• Hazardous Substances Data: 204905-77-1(Hazardous Substances Data)

Usage

Chemical Properties

Gray crystal

InChI:InChI=1/C7H6O3S/c8-3-6-7-5(4-11-6)9-1-2-10-7/h3-4H,1-2H2

Upstream product

• 75-27-4 bromodichloromethane 
• 126213-50-1 3,4-(ethylenedioxy)thiophene 
• 68-12-2 N,N-dimethyl-formamide 

Downstream Products

• 852054-42-3 7-bromo-2,3-dihydrothieno[3,4-b][1,4]dioxine-5-carbaldehyde 
• 859851-01-7 3,4-ethylenedioxythenyl alcohol 
• 211235-87-9 2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde 
• 260063-21-6 2,3-dihydrothieno[3,4-b][1,4]dioxine-5-carboxylic acid 

Relevant articles and documents

Palladium-catalyzed C-H formylation of electron-rich heteroarenes through radical dichloromethylation

A novel palladium-catalyzed C-H formylation of electron-rich N-, O-, and S-containing heteroarenes has been developed. The key to success is that the commercially available BrCHCl2 was used as a stoichiometric carbonyl source. Mechanistic investigations indicated that different from the known Reimer-Tiemann reaction, this net C-H formylation proceeded through an electrophilc radical-type path.