51500-43-7

Basic information

• Product Name: (E)-1-(2-chlorophenyl)-2-diazonioethenolate
• CAS NO: 51500-43-7
• Molecular Formula: C₉H₈OS
• Molecular Weight: 180.5911
• Mol File: 51500-43-7.mol
• Article Data: 10

Chemical Properties

• CAS DataBase Reference: (E)-1-(2-chlorophenyl)-2-diazonioethenolate(CAS DataBase Reference)
• NIST Chemistry Reference: (E)-1-(2-chlorophenyl)-2-diazonioethenolate(51500-43-7)
• EPA Substance Registry System: (E)-1-(2-chlorophenyl)-2-diazonioethenolate(51500-43-7)

Safety Data

• Hazardous Substances Data: 51500-43-7(Hazardous Substances Data)

Upstream product

• 1455-18-1 3-methylbenzothiophene 

Downstream Products

• 6406-91-3 3-methyl-1-benzothiophene-1,1-dioxide 
• 1447945-93-8 2-(4-chlorophenyl)-3-methylbenzo[b]thiophene 
• 1455-18-1 3-methylbenzothiophene 
• 1072811-91-6 4,4,5,5-tetramethyl-2-(3-methylbenzo[b]thiophen-2-yl)-1,3,2-dioxaborolane 

Relevant articles and documents

Gold-Catalyzed Intermolecular Alkyne Oxyarylation for C3 Functionalization of Benzothiophenes

C3-selective C-C bond formation on benzothiophenes is challenging, and few direct functionalization methods are available. A gold-catalyzed reaction of alkynes with benzothiophene S-oxides provides regioselective entry into C3-alkylated benzothiophenes with the C7-alkylated isomer as the minor product. This oxyarylation reaction works with alkyl and aryl alkynes and substituted and unsubstituted benzothiophenes. Mechanistic studies identify that sulfoxide inhibits the catalyst [DTBPAu(PhCN)]SbF6, which also degrades and forms the unreactive complex [(DTBP)2Au]SbF6.

Niobium(V) oxido tris-carbamate as easily available and robust catalytic precursor for the selective sulfide to sulfone oxidation

The oxidation of the sulfide function promoted by a variety of vanadium compounds has been largely explored, whereas the use of homogeneous catalytic systems based on the heavier group 5 metals remains less explored. We report the use of easily available niobium and tantalum carbamates, i.e. [M(O2CNMe2)5] (M = Nb, 1; M = Ta, 2), [Nb(O2CNMe2)4], 3, [NbO(O2CNEt2)3], 4, and [NbCl3(O2CNEt2)2], 5, as effective catalysts for the conversion of a series of alkyl aryl and aromatic sulfides into the corresponding sulfones. NMR investigations on the performant niobium catalyst 4 unexpectedly revealed the substantial stability of this compound in the protic catalytic environment, and a plausible catalytic cycle was obtained by DFT studies. The two active catalytic species, i.e. 4 and its minor mono-methoxide derivative, presumably interconvert to each other exploiting the versatile coordination of the carbamato ligand.

SALT, QUENCHER, RESIST COMPOSITION, AND METHOD FOR PRODUCING RESIST PATTERN

PROBLEM TO BE SOLVED: To provide a salt and the like capable of producing a resist pattern with good CD uniformity. SOLUTION: A salt represented by formula (I) and a resist composition containing the same are provided. [R1, R2 and R