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Ethyl 5-amino-2- thieno pyrimidine-6-carboxylate

Ethyl 4,5-diamino-2-(dimethylamino)thieno[2,3-z/]pyrimidine-6-carboxylate (142) was prepared in 93% yield from 4-amino-6-chloro-2-(di-methylamino)pyrimidine-5-carbonitrile (143) with ethyl 2-mercaptoacetate in refluxing EtOH-THF (5 1) (2000S255). [Pg.109]

Ethoxalyl chloride (Et02C—COC1) in pyridine converted 2-amino-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxamide to the 2-ethoxalylamino analog, which was heated at 260°C to give ethyl 5,6,7,8-tetrahydro-4-oxobenzo-thieno[2,3-d]pyrimidine-2-carboxylate (142) (moderate yield).215... [Pg.50]

Thieno[2,3- /]pyrimidines have been synthesized from 5-acylamino-2,3-dialkylthiophen-4-aldehydes. 2-Amino-3-cyano-thiophens have been transformed into the 2-cyanamino-3-cyano-thiophens and ring-closed to 4-aminothieno[2,3-Raney nickel to the 4-oxo-pyrimidine (263). ... [Pg.294]

See other pages where Ethyl 5-amino-2- thieno pyrimidine-6-carboxylate is mentioned: [Pg.196]    [Pg.196]    [Pg.112]    [Pg.419]    [Pg.93]    [Pg.235]    [Pg.197]    [Pg.112]    [Pg.134]    [Pg.314]    [Pg.197]   
See also in sourсe #XX -- [ Pg.66 , Pg.228 ]

See also in sourсe #XX -- [ Pg.66 , Pg.228 ]



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5-Amino-2-ethyl

Ethyl 4 -carboxylates

Ethyl 5-amino-2- thieno

Pyrimidine amino

Pyrimidine-5-carboxylate

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