Big Chemical Encyclopedia

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

Articles Figures Tables About

3.4- Dicyano-2-pyridone ring

Without additional reagents 3,4>Dicyano-2-pyridone ring from y ,j, 5, -tetracyanoketones... [Pg.139]

Allyltrimethylsilanes react with triplet excited 2,3-dicyano-5,6-dimethylpyra-zine to give diazatricyclooctenes (115), possibly via intermediate (114) formed from ring-opening of an initially-formed [2+2]adduct. Intramolecular [2+2]-cycloaddition yields the pentacyclic compound (116) on irradiation of the corresponding tethered enantiopure bis-2,3-dihydro-4-pyridone. Addition of ethylene to the corresponding a,P-unsaturated-y-lactams in acetone yields (117) and (118) as the major photoproducts. ... [Pg.244]

See other pages where 3.4- Dicyano-2-pyridone ring is mentioned: [Pg.174]    [Pg.245]    [Pg.249]    [Pg.245]    [Pg.241]    [Pg.174]    [Pg.245]    [Pg.249]    [Pg.245]    [Pg.241]   


SEARCH



1.1- dicyano

2-pyridone rings

© 2024 chempedia.info