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Tetrasubstituted enamino esters

A procedure by using enamino ester and alkynone as the substrates was developed as well [2]. 2,3,4,6-Tetrasubstituted pyridines were prepared in a single step. Various acids, such as acetic acid, Amberlyst 15 ion exchange resin, zinc(II) bromide or ytterbium(III) triflate, can be applied as promoter for the cycUzation step of the Michael addition adduct. 4-(3-Oxoalkyl)isoxazoles found could be applied as starting material for pyridine synthesis as well [3],... [Pg.4]


See other pages where Tetrasubstituted enamino esters is mentioned: [Pg.358]    [Pg.358]    [Pg.358]    [Pg.358]    [Pg.343]    [Pg.343]    [Pg.344]    [Pg.377]   
See also in sourсe #XX -- [ Pg.18 , Pg.358 ]

See also in sourсe #XX -- [ Pg.358 ]

See also in sourсe #XX -- [ Pg.18 , Pg.358 ]




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2.2.3.3- Tetrasubstituted

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