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Piperidine → Tert-butyl 6-piperidin-1-ylpyridine-3-carboxylate

HRID 395
Notes
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Reaction equation

HRID 395 reaction equation
C1CCNCC1.CC(C)(C)OC(=O)c1ccc(Br)nc1>C1COCCO1.CC(=O)O.CC(=O)O.O=C([O-])[O-].[Cs+].[Cs+].[Pd].c1ccc(P(c2ccccc2)c2ccc3ccccc3c2-c2c(P(c3ccccc3)c3ccccc3)ccc3ccccc23)cc1>CC(C)(C)OC(=O)c1ccc(N2CCCCC2)nc1
ParticipantsConditionsProcedureSources & evidenceReaction notes

Participants

7

Reactant 2

HCID 8082PiperidineHCID 26369925(tert-Butyl) 6-bromonicotinate

Product 1

HCID 91509375Tert-butyl 6-piperidin-1-ylpyridine-3-carboxylateYield 61.94%

Reagents, catalysts & solvents 4

HCID 10796Cesium carbonateReagentHCID 634876Binap, (A+-)-Catalyst
HCID 4144353
Palladium (II) acetate
Catalyst
HCID 312751,4-DioxaneSolvent

Conditions

Temperature
80 °C

Procedure

In a 100 mL round-bottomed flask was tert-butyl 6-bromonicotinate (516 mg, 2 mmol), piperidine (237 µl, 2.40 mmol), and CESIUM CARBONATE (977 mg, 3.00 mmol) in dioxane (9763 µl) to give a white suspension. The solution was degassed with N2 (g) fo 20 mins. PALLADIUM(II) ACETATE (22.45 mg, 0.10 mmol) and BINAP (62.3 mg, 0.10 mmol) were added under N2 (g) and the reaction was heated to 100 °C. Start Time: 01-Jul-10 1:10:32 PM -0400. The reaction was checked by LC-MS (complete), filtered, rinsed with DCM, concentrated in vacuo. _02 July 2010_ Purification by Iscos (25 g) using 100% Hexanes -> 50% EtOAc in Hexanes afforded a white solid. 325 mg obtained. 1H NMR (300 MHz, DMSO- _d_ 6) d ppm 1.51 - 1.57 (m, 12 H) 1.57 - 1.77 (m, 5 H) 3.58 - 3.74 (m, 4 H) 6.78 - 6.92 (m, 1 H) 7.88 (dd, _J_ =9.16, 2.36 Hz, 1 H) 8.60 (dd, _J_ =2.45, 0.57 Hz, 1 H). LC-MS: Rt = 2.37 min. Method: Short Purity. MS ES+: 263.2 [M+H]+.

Sources & evidence

ORD record
ord-b099625680284510ba7d7318538524ab
Source dataset
750 AstraZeneca ELN dataset
Original link
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Reaction notes

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On this pageParticipantsConditionsProcedureSources & evidenceReaction notes