A mild, efficient, and general Negishi cross coupling protocol, 4 + 5 → 6 is reported; the hydrolysis of products 6 to acetophenones demonstrates the anionicFriedel-Craftsequivalency of the overall synthetic operation.
An Unprecedented, Lewis Acid-Mediated, Metal-Free Iodoannulation Strategy to Aromatic Iodides
作者:Trisha Banik、Vipul V. Betkekar、Krishna P. Kaliappan
DOI:10.1002/asia.201801454
日期:2018.12.4
A direct transformation of ortho‐alkynylated aromatic vinyl ethers to 1‐iodonaphthalenes and other iodo‐heterocycles under mild Lewisacidic conditions in the presence of iodide as an external nucleophile is reported. The first example of an iodoannulation strategy using a nucleophilic source of iodine, coupled with good to excellent yields, exclusive alpha regioselectivity and a broad substrate scope
The present invention relates to compounds having the structure formula (I) useful as potassium channel inhibitors to treat cardiac arrhythmias, and the like.
本发明涉及具有结构式(I)的化合物,其作为钾通道抑制剂用于治疗心律失常等。
Iron-Catalyzed Intermolecular Amination of Benzylic C(sp<sup>3</sup>)–H Bonds
intermolecular benzylic C(sp3)–H amination is developed utilizing 1,2,3,4-tetrazole as a nitrene precursor via iron catalysis. This method enables direct installation of 2-aminopyridine into the benzylic and heterobenzylic position. The methodselectively aminates 2° benzylic C(sp3)–H bond over the 3° and 1° benzylic C(sp3)–H bonds. Experimental studies reveal that the C(sp3)–H amination undergoes via the formation