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

HRID 2302668Notes

Reaction equation

[C:1]([C:3]1[CH:4]=[N:5][CH:6]=[CH:7][CH:8]=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:4]=[N:5][CH:6]=[CH:7][CH:8]=2)[N:2]=1

Participants

Reactant 3

HCID 793-Cyanopyridine

HCID 24813Phosphorus oxychloride

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

Product 1

HCID 184600234-Chloro-2-(pyridin-3-yl)-6-chloro-thieno-[2,3-d]-pyrimidine

Procedure

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

Sources & evidence

ORD record: ord-0ff0e1cf42ec4d5d91f402e7ad0d01e2
Source dataset: uspto-grants-2002_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06432950B1

Reaction notes

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