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Cyanoacetyl chloride

Another approach uses the reaction of 6-chloro-5-nitropyrimidines with a-phenyl-substituted amidines followed by base-catalyzed cyclization to pteridine 5-oxides, which can be reduced further by sodium dithionite to the heteroaromatic analogues (equation 97) (79JOC1700). Acylation of 6-amino-5-nitropyrimidines with cyanoacetyl chloride yields 6-(2-cyanoacetamino)-5-nitropyrimidines (276), which can be cyclized by base to 5-hydroxypteridine-6,7-diones (27S) or 6-cyano-7-oxo-7,8-dihydropteridine 5-oxides (277), precursors of pteridine-6,7-diones (278 equation 98) (75CC819). [Pg.316]

A third synthesis which has resulted in the preparation of rieinine and a number of its derivatives is due to Schroeter, Seidler, Sulzbacher and Kanitz,i2 who foimd that cyanoacetyl chloride polymerises spontaneously to 6-chloro-2 4-dihydroxy-3-cyano-pyridine. The di-sodium derivative of this with methyl sulphate produces A -methyl-6-chloro-4-hydroxy-3-cyano-2-pyridone (6-chlororicininic acid), the mono-sodium derivative of which, with methyl bromide or sulphate, is converted into 6-chlororicinine and the latter is reduced by zinc and sulphuric acid to rieinine. A fourth synthesis, starting from 3-nitro-4-pyridone, is due to Reitmann. ... [Pg.7]

Amino-cephalosporanic acid Cyanoacetyl chloride Sodium hydroxide... [Pg.279]

Cyanoacetic acid methyl ester Heptabarbitol Cyanoacetyl chloride Cephacetrile sodium 4-Cyano benzaldehyde... [Pg.1625]

C,H2N02 372-09-8) see Cyclopentamine Levorphanol Pyrantel Sulindac cyanoacetyl chloride... [Pg.2338]

One of the few successful analogues in the p-1act am series with an aliphatic side chain is ceph-ac trile (23). It was made by reacting 7-amino-cephalosporanic acid with cyanoacetyl chloride in the... [Pg.441]

Chromyl lluorosulfate, 4225 Cyanoacetyl chloride, 1075 Cyanoformyl chloride, 0600... [Pg.27]

Chlorosulfonyl isocyanate, 0324 Cyanamide, 0404 Cyanoacetic acid, 1113 Cyanoacetyl chloride, 1075... [Pg.104]

Cupferron , see Ammonium iV-nitrosophenylaminooxide, 2393 Cyanamide, 0403 Cyanoacetic acid, 1110 Cyanoacetyl chloride, 1072... [Pg.2069]

Chromyl fluorosulfate, 4219 Cyanoacetyl chloride, 1072 Cyanoformyl chloride, 0597 4,4-Diferrocenylpentanoyl chloride, 3853 2,2-Dinitro-2-fluoroethoxycarbonyl chloride, 1069... [Pg.2213]

See other pages where Cyanoacetyl chloride is mentioned: [Pg.108]    [Pg.110]    [Pg.38]    [Pg.113]    [Pg.392]    [Pg.57]    [Pg.947]    [Pg.56]    [Pg.439]    [Pg.385]    [Pg.109]    [Pg.112]    [Pg.282]    [Pg.114]    [Pg.385]    [Pg.1982]    [Pg.55]    [Pg.56]   
See also in sourсe #XX -- [ Pg.41 ]

See also in sourсe #XX -- [ Pg.41 ]



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