23894-57-7

Basic information

• Product Name: 4H-Pyrrolo[1,2-b]pyrazole, 5,6-dihydro-2-phenyl-
• CAS NO: 23894-57-7
• Molecular Formula: C12H12N2
• Molecular Weight: 184.241
• Mol File: 23894-57-7.mol
• Article Data: 6

Chemical Properties

• CAS DataBase Reference: 4H-Pyrrolo[1,2-b]pyrazole, 5,6-dihydro-2-phenyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 4H-Pyrrolo[1,2-b]pyrazole, 5,6-dihydro-2-phenyl-(23894-57-7)
• EPA Substance Registry System: 4H-Pyrrolo[1,2-b]pyrazole, 5,6-dihydro-2-phenyl-(23894-57-7)

Safety Data

• Hazardous Substances Data: 23894-57-7(Hazardous Substances Data)

Upstream product

• 2170-06-1 1-Phenyl-2-(trimethylsilyl)acetylene 
• 127221-89-0 (S)-(-)-1-amino-2-(hydroxymethyl)pyrrolidine 
• 100-52-7 benzaldehyde 
• 98262-66-9 3a,4,5,6-tetrahydro-3-oxo-3H-pyrrolo[1,2-c][1,2,3]oxadiazol-7-ium ylide 
• 536-74-3 phenylacetylene 
• 141235-81-6 (3SR,3aSR)-3-hydroxy-2-phenyl-3,3a,4,5-tetrahydro-6H-pyrrolo<1,2-b>pyrazole 

Relevant articles and documents

Bicyclic Pyridinylpyrazoles

Bicyclic pyridinylpyrazoles of the formula (I) in which the symbols have the meanings given in the description and agrochemically active salts thereof and their use for controlling unwanted microorganisms in crop protection and the protection of materials

Intramolecular Reaction of the Hydrazonyl Group with Formyl and Oxo Groups: Preparation of Pyrazoloindoles and Related Pyrazolo Compounds

Lewis acid-catalysed intramolecular nucleophilic attack of a hydrazonyl group onto aldehyde and ketone groups gives pyrazoles and dihydropyrazoles.Pyrazoloindoles and related pyrazolo compounds have also been prepared.

A NOVEL AND PRACTICAL ONE STEP SYNTHESIS OF 5,6-DIHYDRO-3-PHENYL-4H-PYRROLO (1,2-b) PYRAZOLE (WITHASOMNINE)

Withasomnine (2), the only bicyclic pyrazole alkaloid found thus far in Nature, has been prepared, in one step, by cyclo-addition of and the strained bicyclic meso-ionic system 1, derived from L-proline.The cyclo-addition also gives the novel, un-natural isomer 3.