4-Cyanopyridine → 4-Chloro-2-(pyridin-4-yl)-6-chloro-thieno-[2,3-d]-pyrimidine

Reaction equation

[C:1]([C:3]1[CH:8]=[CH:7][N:6]=[CH:5][CH:4]=1)#[N:2].[NH2:9][C:10]1[S:11][C:12]([Cl:20])=[CH:13][C:14]=1[C:15](OCC)=O.O=P(Cl)(Cl)[Cl:23]>>[Cl:23][C:15]1[C:14]2[CH:13]=[C:12]([Cl:20])[S:11][C:10]=2[N:9]=[C:1]([C:3]2[CH:8]=[CH:7][N:6]=[CH:5][CH:4]=2)[N:2]=1

Participants

Reactant 3

HCID 75064-Cyanopyridine

HCID 24813Phosphorus oxychloride

HCID 141699662-Amino-5-chloro-3-ethoxycarbonyl-thiophene

Product 1

HCID 184599134-Chloro-2-(pyridin-4-yl)-6-chloro-thieno-[2,3-d]-pyrimidine

Procedure

With the procedure of Example 477, the reaction of 4-cyanopyridine and 2-amino-5-chloro-3-ethoxycarbonyl-thiophene, and the subsequent reaction with POCl3 yields 4-chloro-2-(pyridin-4-yl)-6-chloro-thieno-[2,3-d]-pyrimidine

Sources & evidence

ORD record: ord-99d1c7f835b042fba1fe78b94037304d
Source dataset: uspto-grants-2000_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06133271

Reaction notes

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