21582-50-3

Upstream product

• 21582-44-5 (2-amino-thien-3-yl)phenylmethanone 
• 51-79-6 urethane 
• 57-13-6 urea 

Downstream Products

• 50263-86-0 1-cyclopropylmethyl-4-phenyl-1,2-dihydrothieno[2,3-d]pyrimidin-2-one 
• 51687-44-6 2-(cyclopropylmethoxy)-4-phenylthieno[2,3-d]pyrimidine 
• 56844-18-9 2-chloro-4-phenyl-thieno[2,3-d]pyrimidine 
• 50263-83-7 1-methyl-4-phenyl-1H-thieno[2,3-d]pyrimidin-2-one 
• 51687-42-4 2-Methoxy-4-phenylthieno<2,3-d>-pyrimidin 
• 51687-43-5 3-methyl-4-phenyl-3H-thieno[2,3-d]pyrimidin-2-one 

Relevant academic research and scientific papers

1-Substituted-1,2-dihydrothieno[2,3-d]-pyrimidin-2-one derivatives

1-Substituted-1,2-dihydrothieno[2,3-d]-pyrimidin-2-ones of the formula, STR1 wherein R is lower alkyl or cyclopropylmethyl, R1 is halogen, lower alkyl or nitro, R2 is hydrogen or lower alkyl and R3 is hydrogen or halogen, are obtained by treating a trihaloacetamidothiophene derivative with ammonia. These compounds have excellent pharmacological activities such as uricosuric activity.

Thieno[2,3-d]pyrimidine derivatives

Novel thienopyrimidine derivatives which have excellent pharmacological uricosuric activity are prepared by reacting a thiophene derivative with cyanic acid or a salt thereof, urea or a reactive ester of carbamic acid. If desired, alkylated, halogenated o