120047-51-0

Basic information

• Product Name: 3,4-Difluoro-1H-pyrrole
• Synonyms: 3,4-Difluoro-1H-pyrrole
• CAS NO: 120047-51-0
• Molecular Formula: C₄H₃F₂N
• Molecular Weight: 103.07
• Product Categories: organic building block;Porphyrins
• Mol File: 120047-51-0.mol

Chemical Properties

• Melting Point: 45-46 °C
• Boiling Point: 144.8±20.0 °C(Predicted)
• Appearance: /
• Density: 1.353±0.06 g/cm3(Predicted)
• PKA: 14.09±0.50(Predicted)
• CAS DataBase Reference: 3,4-Difluoro-1H-pyrrole(CAS DataBase Reference)
• NIST Chemistry Reference: 3,4-Difluoro-1H-pyrrole(120047-51-0)
• EPA Substance Registry System: 3,4-Difluoro-1H-pyrrole(120047-51-0)

Safety Data

• Hazardous Substances Data: 120047-51-0(Hazardous Substances Data)

Usage

Synthesis Reference(s)

The Journal of Organic Chemistry, 63, p. 5706, 1998 DOI: 10.1021/jo9805798Tetrahedron Letters, 35, p. 8605, 1994 DOI: 10.1016/S0040-4039(00)78448-6

Upstream product

• 160561-81-9 3,4-difluoro-1H-pyrrole-2-carboxylic acid 
• 1810-13-5 (+/-)-3,3,4,4-tetrafluoropyrrolidine hydrochloride 

Downstream Products

• 121399-88-0 2,3,7,8,12,13,17,18-octafluoro-5,10,15,20-tetrakis(pentafluorophenyl)porphyrin 

Relevant articles and documents

2,3,17,18-Tetrahalohexaphyrins and the first phlorin-type hexaphyrins

1-(Triisopropylsilyl)-3,4-dichloropyrrole and 1-(triisopropylsilyl)-3,4- difluoropyrrole were conveniently prepared from the corresponding 3,4-dibromopyrrole by lithiation followed by halogenation. 2,3,17,18- Tetrahalogeno [26]- and [28]hexaphyrins have b

MALT1 INHIBITORS AND USES THEREOF

The invention provides compounds of formula (I) wherein R1, R2, R3, R4 and R5 are as defined in the specification which are potent inhibitors of the enzyme MALT1 and are useful in the treatment of autoimmune disorders and diseases and as an immunooncology approach to the treatment of cancer, especially bladder cancer, colon cancer, hepatocellular cancer and small cell or non-small cell lung cancer.

Octafluoro-meso-tetraarylporphyrins and methods for making these compounds

The novel compounds of the present invention are beta -octafluoro-meso-tetraarylporphyrins of formula (I) and their metallic complexes of formula (II): beta -octafluoro-meso-tetraaryl porphyrins are synthesized by reacting 3,4-difluoropyrrole with an aromatic aldehyde in the presence of boron trifluoride etherate, followed by oxidation. The difluoropyrrole used in this reaction is produced by reacting 3,3,4,4-tetrafluoropyrroline or its corresponding salt, 3,3,4,4-tetrafluoropyrrolidinium salt, with a base such as potassium tert-butoxide. The metalloporphyrins of the present invention are synthesized by deprontonating beta -octafluoro-meso-tetraarylporphyrin ligands and treating said ligands with metal ions.

First Access to 3,4-Difluoro-1H-pyrrole

N-Unsubstituted 3,4-difluoropyrrole is synthesized via a thermal cycloaddition reaction of a N-tert-butyl 2-alkoxycarbonyl aziridine and chlorotrifluoroethylene.Dealkylation of an intermediate N-tert-butylpyrrole is obtained with trifluoromethanesulfonic acid.