ACETALS OF LACTAMS AND ACID AMIDES. 41. ENAMINO AMIDES IN THE SYNTHESIS OF PYRIMIDINE DERIVATIVES
The reaction of α-cyano-β-dimethylaminomethyleneacrylamide with arylamines was used to synthesize α-cyano-β-arylaminoacrylamides, which react readily with dimethylformamide diethylacetal to give the corresponding N-dimethylaminomethylene derivatives.The latter undergo cyclization to 1-aryl-5-cyano-4-pyrimidinones when they are heated in dimethylformamide or acetic anhydride and to pyrimidoquinolone derivatives when they are heated in glacial acetic acid.
Ershov, L. V.,Kiselev, S. S.,Granik, V. G.
p. 439 - 443
(2007/10/02)
β,β-Diacyl-enamine und -enole, 9. Zur Darstellung von Aminomethylenderivaten offenkettiger CH2-acider Verbindungen
The reaction of a combination of primary or secondary aromatic or aliphatic amines with orthocarboxylic esters upon a variety of open-chain CH2-acidic molecules gives N-substituted aminoalkylidene derivatives.The method is highly recommended for methylene
Wolfbeis, Otto S.
p. 3471 - 3484
(2007/10/02)
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