A convenient one-pot synthesis of novel functionalized thiophene, thieno[2,3-b] thiophene, thiopyran, and thiopyrano[2,3-b]thiopyran bearing phosphonate groups

Regioselective Synthesis of Some Novel Phosphonopyrazole, Phosphonopyrimidine and Phosphonodiazepine Compounds Containing Coumarin Ring

“…[19][20][21] The merging of phosphonate group and coumarin ring linked to nitrogen heterocyclic skeleton in one molecular frame may generate prominent pharmacological potencies. Therefore, in the context of our ongoing studies concerning the synthesis of novel phosphorus compounds, [22][23][24][25][26] herein we describe the synthesis of diethyl [2-bromo-3-oxo-3-(2-oxo-2H-chromen-3-yl)prop-1-en-1-yl]phosphonate (2) as a novel substrate having a reactive β-phosphonyl-α,β-unsaturated ketone moiety, which underwent cyclocondensation reactions with a series of 1,2-, 1,3-and 1,4-diamine reagents to design novel coumarin linked to nitrogen heterocycles which bearing phosphonate group. The structure of resulting substrate 2 was elucidated based on spectral data, for example 1 H-NMR spectrum revealed the presence of the protons of two methyl groups of diethyl phosphonate group as two triplet signals at δ 1.03 and 1.19 ppm, and two quartet signals at δ 3.96 and 4.22 ppm.…”

Charge Carrier Regulation for Efficient Blue Quantum-Dot Light-Emitting Diodes Via a High-Mobility Coplanar Cyclopentane[b]thiopyran Derivative

“…Cyclopentane[b]thiopyran has become one of the most important semiconductors in optoelectronic devices due to its unique charge transport characteristics. 23,24 In our previous work, we reported the straightforward synthesis of a series of angular-shaped heteroarenes based on cyclopentane The molecular structures of PVK and C 8 −SS are shown in Figure S1. The PVK:C 8 −SS film exhibited a smaller rootmean-square (RMS) (0.316 nm) than PVK (0.540 nm), indicating that C 8 −SS homogenizes the PVK film surface, which contributes to reducing the leakage current in QLEDs.…”

“…Cyclopentane­[ b ]­thiopyran has become one of the most important semiconductors in optoelectronic devices due to its unique charge transport characteristics. , In our previous work, we reported the straightforward synthesis of a series of angular-shaped heteroarenes based on cyclopentane­[ b ]­thiopyran, that is, C n -SS (n = 4, 6, 8, 10), with different linear alkyl groups . Among them, C 8 –SS exhibits high mobility up to 1.1 cm 2 V –1 s –1 due to the coplanar conjugated π···π and S···π interactions.…”