25624-32-2

Basic information

• Product Name: 4-methyl-2H-chromene-2-thione
• Synonyms: 4-methyl-2H-chromene-2-thione
• CAS NO: 25624-32-2
• Molecular Formula: C₁₀H₈OS
• Molecular Weight: 176.23492
• Mol File: 25624-32-2.mol
• Article Data: 4

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 4-methyl-2H-chromene-2-thione(CAS DataBase Reference)
• NIST Chemistry Reference: 4-methyl-2H-chromene-2-thione(25624-32-2)
• EPA Substance Registry System: 4-methyl-2H-chromene-2-thione(25624-32-2)

Safety Data

• Hazardous Substances Data: 25624-32-2(Hazardous Substances Data)

Upstream product

• 607-71-6 4-methyl-2H-chromen-2-one 
• 108-95-2 phenol 
• 118-93-4 o-hydroxyacetophenone 

Downstream Products

• 2963-66-8 2-(2'-Hydroxyphenyl)benzimidazole 
• 607-71-6 4-methyl-2H-chromen-2-one 

Relevant articles and documents

SOME NEW REACTIONS OF COUMARINS

The direction of the reaction of coumarin derivatives with o-phenylenediamine depends on their structure, leading to 2-(2'-hydroxyphenyl)benzimidazole in the case of unsubstituted coumarin and to derivatives of benzimidazoquinoline in the case of 7-amino-substituted coumarins.

New chromophores based on 2-(4-vinylchromen-2-ylidene)malononitrile and 2-(2-vinylchromen-4-ylidene)malononitrile

New derivatives of 2-(4-vinylchromen-2-ylidene)malononitrile and 2-(2-vinylchromen-4-ylidene)malononitrile were synthesized using the Knoevenagel reaction of 2-(4-methyl-chromen-2-ylidene)malononitrile and 2-(2-methylchromen-4-ylidene)malononitrile, respectively, with the participation of [1-(2-n-butoxyethyl)-2,2,4,7-tetramethyl-1,2,3,4-tetrahydroquinolin-6-yl)]-carbaldehyde. First hyperpolarizability (β) was calculated for the obtained compounds using the M05-2X functional and 6-31+G (d) basis. Optical properties and solvatochromism in solvents of different polarity (toluene, 1,4-dioxane, chlorobenzene, dichloromethane, DMF, and ethanol) were also investigated.