Reaction of C<sub>60</sub><sup>2−</sup> with Organic Halides Revisited in DMF: Proton Transfer from Water to RC<sub>60</sub><sup>−</sup> and Unexpected Formation of 1,2-Dihydro[60]fullerenes
作者:Wei-Wei Yang、Zong-Jun Li、Xiang Gao
DOI:10.1021/jo100430a
日期:2010.6.18
The reactions of dianionic C60 with organic halides, which have been studied extensively in benzonitrile (PhCN), are revisited in a different solvent medium, N,N-dimethylformamide (DMF), by using ArCH2Br (Ar = Ph, C6H4CH3, C6H4Br). Interestingly, instead of the 1,4-R2C60 adducts, which are the typical products when the reactions are carried out in PhCN, the 1,2-dihydro[60]fullerenes (1,2-HRC60) have
通过使用ArCH 2 Br(Ar = Ph,C 6),在不同的溶剂介质N,N-二甲基甲酰胺(DMF)中重新考察了在苯甲腈(PhCN)中已广泛研究的双阴离子C 60与有机卤化物的反应。H 4 CH 3,C 6 H 4 Br)。有趣的是,代替了在PhCN中进行反应时的典型产物1,4-R 2 C 60加合物,获得了1,2-二氢[60]富勒烯(1,2-HRC 60)。作为DMF的主要产品,但邻位-CH 3 C除外6 H 4 CH 2 Br可能是由于空间效应。所获得的1,2-二氢[60]富勒烯已通过单晶衍射,1 H和13 C NMR,高分辨率质谱(HRMS)和UV-vis进行了表征。用氘代试剂包括PhCD 2 Br,DMF- d 7和D 2进行进一步检查O已经表明1,2-二氢富勒烯的富勒烯基氢起源于DMF中的痕量水残留物。当在PhCN中通过添加过量的水重新检查反应时,1,2-二氢富勒烯的收率显着增加