Kulhanek, Jiri published the artcile3,4-Dinitrothiophene as a central unit of quadrupolar push-pull-push systems, Recommanded Product: 2-(5-Methoxythiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, the publication is Chemistry of Heterocyclic Compounds (New York, NY, United States) (2017), 53(1), 46-53, database is CAplus.
A series of quadrupolar D-π-A-π-D mols. bearing methoxythiophene terminal donor and systematically enlarged/varied π-linkers, e.g., I was synthesized by employing cross-coupling and Knoevenagel reactions. 3,4-Dinitrothiophene was utilized as a central acceptor unit in quadrupolar D-π-A-π-D push-pull-push chromophores. Optical properties were studied by electronic absorption spectra. Fundamental optoelectronic properties were investigated by semiempirical PM7 calculations It was shown that by varying the p-conjugated system the longest wavelength absorption maxima could be shifted from 341 to 489 nm. The calculated HOMO-LUMO gaps were found within the range of 6.69-7.29 eV, while the second-order mol. polarizabilities could be tuned from 0.038 to 1.578 × 10-27 esu.
Chemistry of Heterocyclic Compounds (New York, NY, United States) published new progress about 596819-12-4. 596819-12-4 belongs to ethers-buliding-blocks, auxiliary class Thiophene,Boronic acid and ester,Ether,Boronate Esters,Boronic acid and ester, name is 2-(5-Methoxythiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, and the molecular formula is C11H17BO3S, Recommanded Product: 2-(5-Methoxythiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane.
Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem