Piperazine → 4-Chloro-2-(piperazin-1-yl)benzonitrile

HRID 317

Reaction equation

HRID 317 reaction equation
C1CNCCN1.N#Cc1ccc(Cl)cc1Br>C1COCCO1.O=C(/C=C/c1ccccc1)/C=C/c1ccccc1.O=C(/C=C/c1ccccc1)/C=C/c1ccccc1.O=C(/C=C/c1ccccc1)/C=C/c1ccccc1.O=C([O-])[O-].[Cs+].[Cs+].[Pd].[Pd].c1ccc(P(c2ccccc2)c2ccc3ccccc3c2-c2c(P(c3ccccc3)c3ccccc3)ccc3ccccc23)cc1>N#Cc1ccc(Cl)cc1N1CCNCC1

Participants

7

Conditions

Temperature
90 °C

Procedure

Tris(dibenzylideneacetone)dipalladium (0) (43.4 mg, 0.05 mmol) and rac-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl (59.0 mg, 0.09 mmol) were added to a mixture of 2-bromo-4-chlorobenzonitrile (205 mg, 0.95 mmol), Cesium carbonate (463 mg, 1.42 mmol) and Piperazine (163 mg, 1.89 mmol) in dioxane (3 mL). Reaction vessel was placed in an oil bath set to 90 °C 2.45pm. LCMS o/n shows large product peak (222). Cooled, filtered through a silica plug, washing with EtOAc until filtrate is clear. Crude NMR is very messy, target deprioritized. Discarded.

Sources & evidence

ORD record
ord-124e8e40d3e54042af531dbb1d8d85d1
Source dataset
750 AstraZeneca ELN dataset
Original link
View source

Linked notes

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