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1-Methyl-4-piperidone → 1-Methyl-4-{5-[2-(2,2,6,6-tetramethyl-piperidin-4-ylamino)-pyrimidin-4-yl]-thiophen-2-yl}-piperidin-4-ol

HRID 1434946
Notes
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Reaction equation

HRID 1434946 reaction equation
Br[C:2]1[S:6][C:5]([C:7]2[CH:12]=[CH:11][N:10]=[C:9]([NH:13][CH:14]3[CH2:19][C:18]([CH3:21])([CH3:20])[NH:17][C:16]([CH3:23])([CH3:22])[CH2:15]3)[N:8]=2)=[CH:4][CH:3]=1.[Li]CCCC.[CH3:29][N:30]1[CH2:35][CH2:34][C:33](=[O:36])[CH2:32][CH2:31]1>C1COCC1>[CH3:29][N:30]1[CH2:35][CH2:34][C:33]([C:2]2[S:6][C:5]([C:7]3[CH:12]=[CH:11][N:10]=[C:9]([NH:13][CH:14]4[CH2:19][C:18]([CH3:21])([CH3:20])[NH:17][C:16]([CH3:23])([CH3:22])[CH2:15]4)[N:8]=3)=[CH:4][CH:3]=2)([OH:36])[CH2:32][CH2:31]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 740491-Methyl-4-piperidoneHCID 57936128{4-[5-Bromothiophen-2-yl]-pyrimidin-2-yl}-(2,2,6,6-tetramethyl-piperidin-4-yl)-amineHCID 178418339Butyllithium

Product 1

HCID 114189841-Methyl-4-{5-[2-(2,2,6,6-tetramethyl-piperidin-4-ylamino)-pyrimidin-4-yl]-thiophen-2-yl}-piperidin-4-ol

Reagents, catalysts & solvents 1

HCID 8028
Tetrahydrofuran
Solvent
2×

Conditions

Temperature
-78 °C

Procedure

[4-(5-Bromo-thiophen-2-yl)-pyrimidin-2-yl]-(2,2,6,6-tetramethyl-piperidin-4-yl)-amine (Step C of Example 5, 198 mg, 0.5 mmol) was dissolved in THF (10 ml), cooled to −78° C. and treated with nBuLi (1.6M in hexane, 0.94 ml, 1.5 mmol) for 15 minutes. N-methyl-4-piperidone (231 μl, 2 mmol) in THF (0.2 ml) was added rapidly and the reaction mixture stirred for 15 minutes at −78° C., then poured on water and extracted three times with EtOAc. The combined organic phases were dried over sodium sulfate, filtered, evaporated to dryness and purified via preparative HPLC to give the title compound as colorless crystals, which crystallized from ether. Yield: 40 mg (19%).

Workup

  1. additionpoured on water
  2. extractionextracted three times with EtOAc
  3. dry with materialThe combined organic phases were dried over sodium sulfate
  4. filtrationfiltered
  5. customevaporated to dryness
  6. custompurified via preparative HPLC

Sources & evidence

ORD record
ord-e6777f74ed3749478e71e018e2955b3f
Source dataset
uspto-grants-2009_11
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07615562B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes