Direct sp<sup>3</sup> C–H bond arylation, alkylation, and amidation of tetrahydroisoquinolines mediated by hypervalent iodine(<scp>iii</scp>) under mild conditions
作者:Wataru Muramatsu、Kimihiro Nakano、Chao-Jun Li
DOI:10.1039/c3ob42354a
日期:——
We have developed a method for the sp3C–Hbond functionalization of tetrahydroisoquinolines (THIQs) mediated by [bis(trifluoroacetoxy)iodo]benzene (PIFA). The treatment of the THIQs with various nucleophiles in the presence of PIFA in a green solvent alternative gave the coupled products, with a C–C, C–N, or quaternary carbon center in high yields.
Photo‐induced sp
<sup>3</sup>
C−H bond arylation, cyanation and nitroalkylation of tetrahydroisoquinolines (THIQs) under visible light irradiation using a combination of NHPI and Rose Bengal
作者:Mahendra R. Patil、Jagrut Shah、A. Vijay Kumar、Anant R. Kapdi
DOI:10.1002/asia.202000999
日期:2020.12.14
sustainable protocol for α‐arylation of tetrahydroisoquinolines (THIQs) with aryl diazonium salts using a combination of a cheap and stable oxidant, N‐hydroxyphthalimide (NHPI), and an inexpensive dye photosensitizer, RoseBengal (RB), for the first time. The reaction was performed at ambient temperature using green LED lightirradiationunder an oxygen atmosphere. The developed α‐arylation protocol shows a