875132-82-4

Basic information

• Product Name: 1H-Naphtho[2,1-b]pyran-2-carbonitrile, 3-amino-1-(3,4-dichlorophenyl)-
• CAS NO: 875132-82-4
• Molecular Formula: C20H12Cl2N2O
• Molecular Weight: 367.234
• Mol File: 875132-82-4.mol

Chemical Properties

• CAS DataBase Reference: 1H-Naphtho[2,1-b]pyran-2-carbonitrile, 3-amino-1-(3,4-dichlorophenyl)-(CAS DataBase Reference)
• NIST Chemistry Reference: 1H-Naphtho[2,1-b]pyran-2-carbonitrile, 3-amino-1-(3,4-dichlorophenyl)-(875132-82-4)
• EPA Substance Registry System: 1H-Naphtho[2,1-b]pyran-2-carbonitrile, 3-amino-1-(3,4-dichlorophenyl)-(875132-82-4)

Safety Data

• Hazardous Substances Data: 875132-82-4(Hazardous Substances Data)

Upstream product

• 3138-23-6 2-(3,4-dichlorobenzylidene)malononitrile 
• 135-19-3 β-naphthol 
• 6287-38-3 3,4-dichlorobenzaldehyde 
• 109-77-3 malononitrile 

Downstream Products

• 1439458-78-2 C₂₆H₂₀Cl₂N₂O 

Relevant articles and documents

Action of primary amines and hydroxylamine on ethoxymethyleneaminonaphtopyranes: Synthesis of new naphtopyrano [2,3-d] pyrimidines derivatives

A variety of naphtopyrans 1 has been prepared by reaction of 2-naphtol with aryl (or alkyl) idenemalononitriles. The reaction of the naphtopyrans with triethylorthoformiate and then with primary amines and hydroxylamine, leads to new naphtopyrano [2, 3-d] pyrimidines 3 and 4, whose structures were confirmed by IR and NMR spectroscopy.

Iodine mediated synthesis of coumarins from chromenes

Iodine mediated rapid conversion of 2-amino-3-cyano-4-aryl-4H chromenes to the corresponding coumarins in the presence of water is described. Several chromenes are obtained in high yields without chromatographic purification. Under anhydrous conditions, 2