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Chemical constitution and activity of bipyridyliium herbicides. Part VIII. 4‐Bromo‐6,7‐dihydrodipyrido[1,2‐α:2′,1′‐ c ]‐pyrazinediium dibromide and related compounds
Author(s) -
Pojer P. M.,
Summers L. A.
Publication year - 1974
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570110306
Subject(s) - chemistry , reagent , bromide , medicinal chemistry , sodium , alkoxy group , sodium bromide , ethylene dibromide , organic chemistry , toxicology , alkyl , biology
6‐Chloro‐2,2′‐bipyridyl reacts with sodium alkoxides to afford the corresponding 6‐alkoxy‐2,2′‐bipyridyls, which form 6,7‐dihydro‐4‐oxodipyrido[1,2‐ a :2′,1′‐ c ]pyrazinium bromide on treatment with 1,2‐dibromoethane. 6‐Chloro‐2,2′‐bipyridyl with this reagent gives 4‐bromo‐6,7‐dihydrodipyrido[1,2‐ a :2′,1′‐ c ]pyrazinediium dibromide.