28791-87-9

Basic information

• Product Name: 1,1'-cyclopentylidenebis-1H-pyrazole
• Synonyms: 1,1'-cyclopentylidenebis-1H-pyrazole
• CAS NO: 28791-87-9
• Molecular Formula: C11H14 N4
• Molecular Weight: 0
• Mol File: 28791-87-9.mol
• Article Data: 2

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 1,1'-cyclopentylidenebis-1H-pyrazole(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1'-cyclopentylidenebis-1H-pyrazole(28791-87-9)
• EPA Substance Registry System: 1,1'-cyclopentylidenebis-1H-pyrazole(28791-87-9)

Safety Data

• Hazardous Substances Data: 28791-87-9(Hazardous Substances Data)

Upstream product

• 120-92-3 cyclopentanone 
• 288-13-1 NH-pyrazole 
• 931-94-2 1,1-dimethoxycyclopentane 
• 23786-93-8 1,1-diethoxy-cyclopentane 

Relevant articles and documents

Rh-Catalyzed Direct Carboxylation of Alkenyl C?H Bonds of Alkenylpyrazoles

The Rh-catalyzed direct carboxylation of alkenyl C?H bonds was achieved by using pyrazole as a removable directing group. In the presence of 5 mol% RhCl3 ? 3H2O, 6 mol% P(Mes)3, and 2 equiv. of AlMe2(OMe), the alkenyl C?H bond of various alkenylpyrazoles was directly carboxylated in good yields under CO2 atmosphere. Furthermore, several useful transformations of the pyrazole moiety of the product were achieved to afford synthetically useful carboxylic acid derivatives in good yields.