Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Imidazole ring, N-condense

Starting from acylated 2-azidomethylbenzimidazoles (145), an additional imidazole ring can be condensed by transformation of the azido group with tri-n-butylphosphane into the appropriate iminophosphorane intermediate 146. After extrusion of phosphane oxide, cyclization occurs to the 1-substituted 4//-imidazo[l,5-a]benzimidazole 147 (Scheme 58) (89T1823 94S1197). [Pg.193]

N-Condensed imidazole ring from o-amino-N-heterocyclics... [Pg.420]

N-Condensed imidazole ring annelation with zl -PV-l,4,2-oxazaphospholines l,8a-Dihydroimidazo[l,5-a]pyridines... [Pg.505]

O,N-heterocyclics, N-condensed imidazole ring, -indole ring, -pyrimidine ring,... [Pg.265]

See other pages where Imidazole ring, N-condense is mentioned: [Pg.299]    [Pg.326]    [Pg.306]    [Pg.234]    [Pg.253]    [Pg.275]    [Pg.276]    [Pg.237]    [Pg.299]    [Pg.326]    [Pg.306]    [Pg.234]    [Pg.253]    [Pg.275]    [Pg.276]    [Pg.237]    [Pg.267]    [Pg.18]    [Pg.204]    [Pg.29]    [Pg.851]    [Pg.402]    [Pg.513]    [Pg.517]    [Pg.285]    [Pg.20]    [Pg.851]    [Pg.43]    [Pg.474]    [Pg.96]    [Pg.103]    [Pg.409]    [Pg.131]    [Pg.262]    [Pg.204]    [Pg.120]    [Pg.126]    [Pg.415]    [Pg.93]    [Pg.258]    [Pg.268]    [Pg.118]    [Pg.372]    [Pg.128]   
See also in sourсe #XX -- [ Pg.26 , Pg.339 ]



SEARCH



Condensed rings

Imidazol rings

Imidazole N-condensed

Imidazole ring

N- imidazole

© 2024 chempedia.info