Synthesis of Isoxazolo[5',4':3,4]pyrrolo[1,2-a]azepines via N-Acyliminium Cyclization
摘要:
Fused polycyclic compounds with benzo[c]isoxazolo[5',4':3,4]pyrrolo[1,2-a]azepine, dibenzo[c,e]isoxazolo[5',4':3,4]pyrrolo[1,2-a]azepine, and benzo[f]isoxazolo[5',4':3,4]pyrrolo[1,2-d]oxazepine cores are readily available via cyclization of the N-acyliminium cation generated from the corresponding 6-hydoxy-5-R-6,6a-dihydro-3aH-pyrrolo[3,4-d]isoxazol-4(5H)-ones in the presence of BF3 center dot Et2O or Sn(NTf2)(4).
Synthesis of Isoxazolo[5',4':3,4]pyrrolo[1,2-a]azepines via N-Acyliminium Cyclization
作者:L. V. Lenshmidt、M. S. Ledovskaya、A. G. Larina、A. S. Filatov、O. B. Chakchir、A. A. Uspenskii、A. V. Stepakov
DOI:10.1134/s1070428020020098
日期:2020.2
Fused polycyclic compounds with benzo[c]isoxazolo[5',4':3,4]pyrrolo[1,2-a]azepine, dibenzo[c,e]isoxazolo[5',4':3,4]pyrrolo[1,2-a]azepine, and benzo[f]isoxazolo[5',4':3,4]pyrrolo[1,2-d]oxazepine cores are readily available via cyclization of the N-acyliminium cation generated from the corresponding 6-hydoxy-5-R-6,6a-dihydro-3aH-pyrrolo[3,4-d]isoxazol-4(5H)-ones in the presence of BF3 center dot Et2O or Sn(NTf2)(4).