Solventless Synthesis of Quaterphenyls and Terphenyls from Chalcones and Allylsulfones under Phase Transfer Catalysis Conditions

Abstract

Abstract:Easily available chalcones and allyl sulfones along with cheap solid NaOH and polyethyleneglycol (PEG) 1000 have been used to directly generate the meta-terphenyl or quaterphenyl motifs under Phase Transfer Catalysis solventless conditions. The new approach provides an economic and environmentally friendly solution to removal of hazardous bases as well as organic solvents.

Metal free synthesis of thermally stable blue fluorescent m-terphenyls by ring transformation of 2H-pyran-2-ones: chemical synthesis, spectroscopy and computational studies

“…17 BTPS (6) denotes OLED use. 18,19 The remaining two cyclophanes, 7 and 8, are employed as metal trapping agents due to the hollow hole that exists inside the structural framework. 20,21 Furthermore, polyfunctionalized derivatives of m-terphenyl are employed as strong UV lters.…”

The role of terphenyl-containing carboxylic acid in the oligomerization of aryl vinyl ketone

“…12 In recent decades, the synthesis of such LCs carried out with the help of synthetic methods that do not use metal catalysis has been being widely carried out. [13][14][15] Previously, we synthesized new anisotropic terphenyl derivatives and demonstrated that they form smectic and nematic phases in a wide temperature range, namely 8-((4 00 -((1R,4S)-4butylcyclohexyl) -2 0 -chloro-[1,1 0 ,4 0 ,1 00 -terphenyl]-4-yl)oxy)oct-1en-3-one (TERPh-VK) and 6-((4 00 -((1R,4S)-4-butylcyclohexyl)-2 0chloro-[1,1 0 :4 0 ,1 00 -terphenyl]-4-yl)oxy) hexanoic acid (TERPh-COOH). 16 As for TERPh-VK, the double bond disappears under heating.…”