2,2'-Bipyrimidine
{{Chembox
| Name = 2,2′-Bipyrimidine
| ImageFile = 2,2'-bipyrimidine, corrected.png
| ImageSize = 156
| ImageAlt =
| PIN = 2,2′-Bipyrimidine
| OtherNames = 2,2′-Dipyrimidine, bipyrimidyl
|Section1={{Chembox Identifiers
| CASNo = 34671-83-5
| CASNo_Ref = {{cascite|correct|CAS}}
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = Y67VU82SCE
| PubChem = 123444
| ChemSpiderID = 110040
| EC_number = 252-137-2
| InChI=1S/C8H6N4/c1-3-9-7(10-4-1)8-11-5-2-6-12-8/h1-6H
| InChIKey = HKOAFLAGUQUJQG-UHFFFAOYSA-N
| SMILES = C1=CN=C(N=C1)C2=NC=CC=N2 }}
|Section2={{Chembox Properties
| C=8|H=6|N=4
| MolarMass =
| Appearance = white solid
| Density =
| MeltingPtC = 113-115
| BoilingPt =
| Solubility = }}
|Section3={{Chembox Hazards
| MainHazards =
| GHSPictograms = {{GHS07}}
| GHSSignalWord = Warning
| HPhrases = {{H-phrases|315|319|335}}
| PPhrases = {{P-phrases|261|264|271|280|302+352|304+340|305+351+338|312|321|332+313|337+313|362|403+233|405|501}}
| FlashPt =
| AutoignitionPt = }}
}}
2,2′-Bipyrimidine is an organic compound with the formula (C4H3N2)2. It is a derivative of the heterocycle pyrimidine. It is a white solid. The compound is used as a bridging ligand in coordination chemistry.{{cite journal |doi=10.1126/science.280.5363.560 |title=Platinum Catalysts for the High-Yield Oxidation of Methane to a Methanol Derivative |date=1998 |last1=Periana |first1=Roy A. |last2=Taube |first2=Douglas J. |last3=Gamble |first3=Scott |last4=Taube |first4=Henry |last5=Satoh |first5=Takashi |last6=Fujii |first6=Hiroshi |journal=Science |volume=280 |issue=5363 |pages=560–564 |pmid=9554841 |bibcode=1998Sci...280..560P }}
2,2′-Bipyrimidines can be prepared by Ullmann coupling of 2-iodopyrimidines.{{cite journal |last1=Vlád |first1=Gábor |last2=Horváth |first2=István T. |date=2002 |title=Improved synthesis of 2,2′-bipyrimidine |journal=The Journal of Organic Chemistry |volume=67 |issue=18 |pages=6550–6552 |doi=10.1021/jo0255781 |pmid=12201781 |s2cid=13374569}}