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

HRID 395
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HRID 395 반응식
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
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참가 물질

7

반응물 2

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

생성물 1

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

시약·촉매·용매 4

HCID 10796Cesium carbonate시약HCID 634876Binap, (A+-)-촉매
HCID 4144353
Palladium (II) acetate
촉매
HCID 312751,4-Dioxane용매

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온도
80 °C

실험 절차

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]+.

출처 및 근거

ORD 기록
ord-b099625680284510ba7d7318538524ab
출처 데이터셋
750 AstraZeneca ELN dataset
원본 링크
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