Decatungstate-Mediated Radical Reactions of C<sub>60</sub> with Substituted Toluenes and Anisoles: A New Photochemical Functionalization Strategy for Fullerenes
作者:Manolis D. Tzirakis、Michael Orfanopoulos
DOI:10.1021/ol7030125
日期:2008.3.1
convenient, highly efficient, decatungstate-mediated chemical methodology to functionalize fullerenes is demonstrated. A variety of radicals have been generated by the photochemical interaction of tetrabutylammonium decatungstate [(n-Bu4N)4W10O32] and para-substituted toluenes, anisoles, and thioanisole and effectively trapped by the [60]fullerene affording the corresponding 1,2-dihydro[60]fullerene monoadducts
Synthesis of Benzothieno[60]fullerenes through Fullerenyl Cation Intermediates
作者:Yutaka Matsuo、Yun Yu、Xiao-Yu Yang、Hiroshi Ueno、Hiroshi Okada、Hiromasa Shibuya、Yeong Suk Choi、Yong Wan Jin
DOI:10.1021/acs.joc.9b00549
日期:2019.5.17
Benzothieno[60]fullerenes were synthesized using fullerenyl cations as key intermediates. The reaction proceeded through a nucleophilic attack of the sulfur atom as a weak nucleophile to the fullerenyl cation electrophile. A monoarylated fullerene, (2-methylthiophenyl)hydro[60]fullerene, C60ArH (Ar = C6H4-SMe-2 and so on; four derivatives) was subjected to deprotonation with KOtBu to form a fullerenyl
苯并噻吩并[60]富勒烯是使用富勒烯阳离子作为关键中间体合成的。该反应通过作为弱亲核体的硫原子对富勒烯阳离子亲电体的亲核攻击而进行。将单芳基化的富勒烯,(2-甲基硫代苯基)氢[60]富勒烯,C 60 ArH(Ar = C 6 H 4 -SMe-2等;四种衍生物)用KO t Bu脱质子化以形成富勒烯基阴离子ArC 60 –,然后使用I 2氧化生成富勒烯阳离子ArC 60 +,通过富勒烯阳离子-S与产物的相互作用,导致分子内脱甲基环化。电化学和计算研究表明,由于稠合的噻吩基部分的HOMO相对较高,该化合物的带隙比通常的富勒烯衍生物略窄。