Regioselective and unusual [3+2] cycloadditions of α-nitrosostyrenes with 1,3-diaza-1,3-butadienes
摘要:
alpha-Nitrosostyrenes (2), generated in situ, underwent unusual regioselective [3+2]cycloadditions with 1,3-diaza-1,3-butadienes (1) leading to cyclic nitrones (5) in good yields. They also gave cyclic nitrones (8) with trisubstituted amidines (7).
Synthesis of new series of 5,6-dihydro-4H-1,2-oxazines via hetero Diels–Alder reaction and evaluation of antimicrobial activity
摘要:
A new series of 5,6-dihydro-4H-1,2-oxazines were synthesized via hetero Diels-Alder reaction of alpha-nitrosoolefins with alkenes. alpha-Nitrosoolefins were generated from ketoximes by the action of chloramine-T. The newly synthesized compounds were characterized with IR, NMR, elemental analysis and screened for their antimicrobial activity; they exhibited excellent antimicrobial activity. The minimal inhibitory concentration of the compounds was in the range of 10-35 mu g ml(-1) for bacteria and 10-40 mu g ml(-1) for fungi. (C) 2008 Elsevier Masson SAS. All rights reserved.
A new series of 5,6-dihydro-4H-1,2-oxazines were synthesized via hetero Diels-Alder reaction of alpha-nitrosoolefins with alkenes. alpha-Nitrosoolefins were generated from ketoximes by the action of chloramine-T. The newly synthesized compounds were characterized with IR, NMR, elemental analysis and screened for their antimicrobial activity; they exhibited excellent antimicrobial activity. The minimal inhibitory concentration of the compounds was in the range of 10-35 mu g ml(-1) for bacteria and 10-40 mu g ml(-1) for fungi. (C) 2008 Elsevier Masson SAS. All rights reserved.
Regioselective and unusual [3+2] cycloadditions of α-nitrosostyrenes with 1,3-diaza-1,3-butadienes
作者:Arun K. Sharma、Sujit N. Mazumdar、Mohinder P. Mahajan
DOI:10.1016/s0040-4039(00)61523-x
日期:1993.12
alpha-Nitrosostyrenes (2), generated in situ, underwent unusual regioselective [3+2]cycloadditions with 1,3-diaza-1,3-butadienes (1) leading to cyclic nitrones (5) in good yields. They also gave cyclic nitrones (8) with trisubstituted amidines (7).