Dynamic self-correcting nucleophilic aromatic substitution

被引:87
作者
Ong, Wen Jie [1 ]
Swager, Timothy M. [1 ]
机构
[1] MIT, Dept Chem, Cambridge, MA 02139 USA
关键词
SINGLE-STEP SYNTHESIS; COVALENT CHEMISTRY; POLYMER NETWORKS; METATHESIS; SYSTEMS; ROUTE; BONDS; CAGES;
D O I
10.1038/s41557-018-0122-8
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Dynamic covalent chemistry, with its ability to correct synthetic dead-ends, allows for the synthesis of elaborate extended network materials in high yields. However, the limited number of reactions amenable to dynamic covalent chemistry necessarily confines the scope and functionality of materials synthesized. Here, we explore the dynamic and self-correcting nature of nucleophilic aromatic substitution (SNAr), using ortho-aryldithiols and ortho-aryldifluorides that condense to produce redox-active thianthrene units. We demonstrate the facile construction of two-, three- and four-point junctions by reaction between a dithiol nucleophile and three different model electrophiles that produces molecules with two, three and four thianthrene moieties, respectively, in excellent yields. The regioselectivity observed is driven by thermodynamics; other connections form under kinetic control. We also show that the same chemistry can be extended to the synthesis of novel ladder macrocycles and porous polymer networks with Brunauer-Emmett-Teller surface area of up to 813 m(2) g-(1).
引用
收藏
页码:1023 / 1030
页数:8
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