54312-31-1

Basic information

• Product Name: Thiophene, 2-(9H-fluoren-9-yl)-3,4-dimethyl-
• CAS NO: 54312-31-1
• Molecular Formula: C19H16S
• Molecular Weight: 276.402
• Mol File: 54312-31-1.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Thiophene, 2-(9H-fluoren-9-yl)-3,4-dimethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Thiophene, 2-(9H-fluoren-9-yl)-3,4-dimethyl-(54312-31-1)
• EPA Substance Registry System: Thiophene, 2-(9H-fluoren-9-yl)-3,4-dimethyl-(54312-31-1)

Safety Data

• Hazardous Substances Data: 54312-31-1(Hazardous Substances Data)

Upstream product

• 35977-63-0 3',6'-Dihydro-4',5'-dimetylspiro(fluoren-9,2'-<2H>thiopyran)-1'-oxid 
• 61276-39-9 Spiro 
• 68597-16-0 3',6'-Dihydro-4',5'-dimethylspiro(fluoren-9,2'-<6,6-D₂>-<2H>thiopyran)-1'-oxid 
• 76390-44-8 Spiro 
• 71169-54-5 Spiro 

Relevant articles and documents

Organosulfur Compounds, L. - 2H-Thiopyrans and Dihydro-2H-thiopyrans, Synthons for Thiophenes

2H-Thiopyran derivatives yield thiophenes on pyrolysis at 240-260 deg C.The influence of substitution in positions 3 to 6 of the 2H-thiopyrans on these new thermal rearrangement and fragmentation reactions is dealt with, and some proposed mechanisms are discussed in detail.A novel three-step synthesis of thiophenes from carbonyl compounds via the corresponding thiones, their -cycloaddition with 1,3-dienes with formation of dihydro-2H-thiopyrans and subsequent thermal conversion is described.In this reaction sequence, whose scope and limitations are outlined, t he thiocarbonyl compound contributes the sulfur and the 1,3-diene the carbon skeleton of the desired thiophenes.