A Modular Synthesis of 4-Aminoquinolines and [1,3] N-to-C Rearrangement to Quinolin-4-ylmethanesulfonamides
作者:Kyung Hwan Oh、Jin Gyeong Kim、Jin Kyoon Park
DOI:10.1021/acs.orglett.7b01701
日期:2017.8.4
diversified 4-aminoquinolines using nitriles, diaryliodoniums, and ynamides. The C7-substituted regioisomers were formed regioselectively when meta-substituted phenyliodonium salts were used. [1,3] N-to-C rearrangement of the products to quinolin-4-ylmethanesulfonamides and simultaneous deprotection of benzyl and sulfonamide group were newly developed. Finally, antimalarial CK-2-68 was successfully prepared
Pd(II)-Catalyzed Synthesis of Furo[2,3-<i>b</i>]pyridines from β-Ketodinitriles and Alkynes via Cyclization and N–H/C Annulation
作者:Amitava Rakshit、Hirendra Nath Dhara、Ashish Kumar Sahoo、Tipu Alam、Bhisma K. Patel
DOI:10.1021/acs.orglett.2c01472
日期:2022.5.27
A Pd(II)-catalyzed synthesis of furopyridines has been developed from β-ketodinitriles and alkynes via an unusual N–H/C annulation. The participation of both the nitrile groups and the concurrent construction of furan and pyridine rings through the formation of C–C, C═C, C–O, C–N, and C═N bonds are the important features. The synthetic applicability is further demonstrated through a series of postsynthetic