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With cyclooctatetrathiophene (COTh) as building block, two α,α,α,α-tetraaryl COThs, COThP and COThTh have been efficiently synthesized. Phenyl and thienyl were employed as end-capping groups to introduce to COTh and increase its conjugation. For enlarging the special ‘saddle’ shaped structure, a pentamer of COTh was synthesized via Negishi reaction and CuCl 2 -promoted oxidative coupling reaction...
The reaction of triphenyltin hydroxide with 2-furanyl, 2-furanvingl, 2-(5-terbutyl) furanyl, 2-(5-benzoyl) furanyl, 2-pyridinyl, 4-pyridinyl, 3-indolyl, 3-indolmethyl, 3-indolethyl and 3-indolpropyl carboxylates in 1:1 stoichiometry yields triphenyltin esters of heteroaromatic carboxylic acids Ph 3 SnO 2 CR. All compounds are characterized by elemental analysis, IR and 1 H...
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