74250-10-5

Basic information

• Product Name: 3,4-Dimethyl-2-(9'-xanthenyl)thiophen
• Synonyms: 3,4-Dimethyl-2-(9'-xanthenyl)thiophen
• CAS NO: 74250-10-5
• Molecular Weight: 292.401
• Mol File: 74250-10-5.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: 3,4-Dimethyl-2-(9'-xanthenyl)thiophen(CAS DataBase Reference)
• NIST Chemistry Reference: 3,4-Dimethyl-2-(9'-xanthenyl)thiophen(74250-10-5)
• EPA Substance Registry System: 3,4-Dimethyl-2-(9'-xanthenyl)thiophen(74250-10-5)

Safety Data

• Hazardous Substances Data: 74250-10-5(Hazardous Substances Data)

Upstream product

• 35977-66-3 Spiro 

Downstream Products

• 92-83-1 xanthene 
• 4381-14-0 9,9'-bixanthene 

Relevant articles and documents

Organic Photochemistry, XXXVI. - Dihydro-2H-thiopyran S-Oxides, Synthons for α,β-Unsaturated Aldehydes

Irradiation of dihydro-2H-thiopyran S-oxides 1a-g in benzene leads via desulfuration to the α,β-unsaturated aldehydes 2 and 3 mostly as mixtures of their E/Z-isomers.The assignment of their configurations is based on 1 H- and 13 C-NMR data which are discussed in detail.This type of photoreaction represents a new four-carbon homologation method for the carbonyl compounds from which the dihydro-2H-thiopyrans 1 are synthesized.It is shown by deuterium labelling of the S-oxide 1c that the photoreaction 1-> 2+3 involves an intramolecular hydrogen transfer.