CQC and Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal.
J Org Chem. 2020 Mar 6;85(5):3328-3335. doi: 10.1021/acs.joc.9b03151. Epub 2020 Feb 11.
The synthesis of bilanes and hexapyrroles containing an oxime functionality, prepared by two and three consecutive hetero-Diels-Alder reactions (or conjugated additions) between nitrosoalkenes and dipyrromethanes, is described. Bilanes underwent oxidative macrocyclization to afford a new class of -AB-corroles. Porphyrins could also be obtained by reacting bilanes with aldehydes in the presence of trifluoroacetic acid, followed by an oxidative step.
描述了通过硝基亚烯和二吡咯甲烷之间的两个和三个连续的杂[4+2]环加成(或共轭加成)制备含肟官能团的双并六吡咯和六吡咯的合成。双并六吡咯发生氧化环化反应,得到了一类新的 AB-卟啉。在三氟乙酸存在下,用双并六吡咯与醛反应,然后进行氧化步骤,也可以得到卟啉。