Expanded Cyclotetrabenzoins
Expanded Cyclotetrabenzoins
复制标题
DOI：
10.1021/acs.orglett.0c04014
复制
发表时间：
2021-01-07
期刊：
影响因子：
5.2
通讯作者：
Miljanic, Ognjen S.
中科院分区：
文献类型：
--
作者：
Eisterhold, Andrew M.;Puangsamlee, Thamon;Miljanic, Ognjen S.
环苯偶氮是一种形状持久的大环，在制备光电材料和多孔材料方面具有重要意义。利用N-杂环卡宾催化的安息香缩合反应，合成了以联苯、萘和甲苯为骨架的新型环四安息香。它们的制备具有不同的区域选择性，与氰化物催化制备母体环四安息香不同。本文报道了两个新的环四苯乙酸酯的晶体结构。用Co-2(CO)(6)基团对甲苯基环四苯偶氮的炔基进行了后合成官能化。
Cyclobenzoins are shape-persistent macrocycles of interest in the preparation of optoelectronic and porous materials. New cyclotetrabenzoins derived from biphenyl, naphthalene, and tolane skeletons were synthesized using N-heterocyclic carbene-catalyzed benzoin condensation. Their preparation proceeded with different regioselectivity than that observed in the cyanide-catalyzed preparation of the parent cyclotetrabenzoin. Crystal structures of two new cyclotetrabenzoin acetic esters have been obtained. Alkyne groups of the tolane-based cyclotetrabenzoin were postsynthetically functionalized with Co-2(CO)(6) moieties.