✍ Scribed by Patricia P. Lima; Severino A. Junior; Oscar L. Malta; Luis D. Carlos; Rute A. Sá Ferreira; Rani Pavithran; M. L. P. Reddy
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📜 SIMILAR VOLUMES
A series of new soluble polyamides having isopropylidene-and methylsubstituted arylene ether moieties in the polymer chain were prepared by the direct polycondensation of 3,3 ,5,5-tetramethyl-2,2-bis[4-(4-aminophenoxy)phenyl]propane (TBAPP ) and various aromatic dicarboxylic acids in N-methyl-2-pyrr
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Bromohexyl)-3¢,4¢-ethylenedioxy)-2,2¢-bithiophene (3): Into a roundbottomed flask were introduced EDOT (5.9 g, 41.4 mmol) and 150 mL of tetrahydrofuran (THF). The mixture was cooled to ±40 C and butyllithium, 2.5 M in hexanes (19 mL, 47.5 mmol), was added rapidly. After 1 h stirring, tributyltin chl