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Maleonitrile, diamino

This procedure provides a convenient synthesis of aminomalononitrile, which has been demonstrated to be a useful intermediate for the preparation of substituted imidazoles, thiazoles, oxazoles, purines, and purine-related heterocycles.2 It is also a convenient starting material for the preparation of diamino-maleonitrile.2, 4... [Pg.89]

Synthetic routes to pyrimidines through HCN trimers are listed in Section Another route is through reaction of DAMN with cyanoformimi-dates. l-Amino-2-aminoalkoxymethyleneamino)maleonitrile (134) is first formed. This rear-ranges to the ( )-isomer, which cyclizes to the 2-alkoxy-4,5-diamino-6-cyanopyrimidine (135) in a second step (Scheme 49) (75USP3883532). [Pg.32]

Oxidation of Schiff bases of the monoamide 8 derived from diamino-maleonitrile gives 4-cyanoimidazole-5-carboxamides (Eq. 4). A new synthesis of 2-formyl-4-methyl-l-phenylimidazole 3-oxide (10) involves the fluoride-ion-promoted cyclization of the trimethylsilyl ether of JV-dichloro-acetyl-A-phenylaminopropanone oxime (9). ... [Pg.246]

See other pages where Maleonitrile, diamino is mentioned: [Pg.158]    [Pg.31]    [Pg.74]    [Pg.60]    [Pg.158]    [Pg.31]    [Pg.74]    [Pg.60]    [Pg.113]    [Pg.5023]    [Pg.3]    [Pg.113]    [Pg.5022]   
See also in sourсe #XX -- [ Pg.48 , Pg.60 ]

See also in sourсe #XX -- [ Pg.48 , Pg.60 ]



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