1417719-68-6

Basic information

• Product Name: C₂₁H₁₄NOPS
• Synonyms: C₂₁H₁₄NOPS
• CAS NO: 1417719-68-6
• Molecular Weight: 359.388
• Mol File: 1417719-68-6.mol

Chemical Properties

• CAS DataBase Reference: C₂₁H₁₄NOPS(CAS DataBase Reference)
• NIST Chemistry Reference: C₂₁H₁₄NOPS(1417719-68-6)
• EPA Substance Registry System: C₂₁H₁₄NOPS(1417719-68-6)

Safety Data

• Hazardous Substances Data: 1417719-68-6(Hazardous Substances Data)

Upstream product

• 2516-40-7 2-bromo-1,3-benzothiazole 
• 1450625-08-7 2-(tributylstannyl)benzo[b]phosphole P-oxide 
• 105445-58-7 2-(tri-n-butyltin)benzothiazole 

Relevant articles and documents

Synthesis of 2-alkenyl- and 2-alkynyl-benzo[ b ]phospholes by using palladium-catalyzed cross-coupling reactions

Heck, Stille, and Sonogashira reactions of 2-bromobenzo[b]phosphole P-oxide afforded a series of 2-alkenyl- and 2-alkynyl-benzo[b]phosphole P-oxides. The charge-transfer character of the new benzo[b]phosphole π-systems in the excited state is enhanced by the terminal electron-donating substituents. Furthermore, the C-Sn cross-coupling of the bromide was applied to the facile synthesis of a new Stille-coupling precursor, 2-stannylbenzo[b]phosphole.

Synthesis and structure-property relationships of 2,2'-bis(benzo[b] phosphole) and 2,2'-benzo[b]phosphole-benzo[b]heterole hybrid π systems

The first comprehensive study of the synthesis and structure-property relationships of 2,2'-bis(benzo[b]phosphole)s and 2,2'-benzo[b]phosphole- benzo[b]heterole hybrid π systems is reported. 2-Bromobenzo[b]phosphole P-oxide underwent copper-assisted homocoupling (Ullmann coupling) and palladium-catalyzed cross-coupling (Stille coupling) to give new classes of benzo[b]phosphole derivatives. The benzo[b]phosphole-benzo[b]thiophene and -indole derivatives were further converted to P,X-bridged terphenylenes (X=S, N) by a palladium-catalyzed oxidative cycloaddition reaction with 4-octyne through the Cβ-H activation. X-ray analyses of three compounds showed that the benzo[b]phosphole-benzo[b]heterole derivatives have coplanar π planes as a result of the effective conjugation through inter-ring C-C bonds. The π-π* transition energies and redox potentials of the cis and trans isomers of bis(benzo[b]phosphole) P-oxide are very close to each other, suggesting that their optical and electrochemical properties are little affected by the relative stereochemistry at the two phosphorus atoms. The optical properties of the benzo[b]phosphole-benzo[b]heterole hybrids are highly dependent on the benzo[b]heterole subunits. Steady-state UV/Vis absorption/fluorescence spectroscopy, fluorescence lifetime measurements, and theoretical calculations of the non-fused and acetylene-fused benzo[b]phosphole-benzo[b]heterole π systems revealed that their emissive excited states consist of two different conformers in rapid equilibrium.