Highly efficient construction of pentacyclic benzo[b]indeno-[1,2,3-de][1,8]naphthyridine derivatives via four-component domino reaction
作者:Cheng-Pao Cao、Wei Lin、Ming-Hua Hu、Zhi-Bin Huang、Da-Qing Shi
DOI:10.1039/c3cc43489c
日期:——
A series of new octahydrobenzo[b]indeno[1,2,3-de][1,8] naphthyridine and decahydropyrido[2,3,4-gh]phenanthridine derivatives were synthesized via a four-component domino reaction under microwave irradiation. This one-pot transformation, which involved multiple steps and did not require the use of a catalyst, constructed four new C–C bonds, two new C–N bonds, and three new rings, with efficient use of all reactants.
Efficient aerobic and DMSO-oxidative sulfenylation reactions catalyzed by Na2S2O3
作者:Habiballah Shafie、Mohammad Abbasi
DOI:10.1016/j.tet.2024.133989
日期:2024.5
Two efficient acid-base-free procedures are introduced for the sulfenylation of cyclic enaminone compounds under aerobic and DMSO-oxidative conditions catalyzed by NaSO. According to procedures, a mixture of an aryl thiol and a cyclic enaminone are reacting together in DMF (aerobic oxidative conditions) or DMSO in the presence of a catalytic amount of NaSO (0.1 equiv in DMSO and 0.4 equiv in DMF) to