HomeMCPWorkbenchSkills
HomeWorkbenchNotificationsMe
llms.txt · MCP GuidePrivacy Policy · Terms of Service · Supportv1.8.0
  1. Home
  2. /Reaction

Triphenylphosphine → Methyl 2-[[1-(tert-butoxycarbonyl)-2-pyrrolidinyl]methoxy]pyridine-5-carboxylate

HRID 354311
Notes
Print preview

Reaction equation

HRID 354311 reaction equation
[OH:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]([O:10][CH3:11])=[O:9])=[CH:4][N:3]=1.[C:12]([O:16][C:17]([N:19]1[CH2:25][CH2:24][CH2:23][C@H:20]1[CH2:21]O)=[O:18])([CH3:15])([CH3:14])[CH3:13].C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.CC(OC(/N=N/C(OC(C)C)=O)=O)C>C1COCC1>[C:12]([O:16][C:17]([N:19]1[CH2:25][CH2:24][CH2:23][CH:20]1[CH2:21][O:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]([O:10][CH3:11])=[O:9])=[CH:4][N:3]=1)=[O:18])([CH3:15])([CH3:13])[CH3:14]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 11776TriphenylphosphineHCID 643448(S)-(-)-N-Boc-prolinolHCID 5363146Diisopropyl azodicarboxylateHCID 178498304HCID 178498304, compound

Product 1

HCID 23511704Methyl 2-[[1-(tert-butoxycarbonyl)-2-pyrrolidinyl]methoxy]pyridine-5-carboxylateYield 44.3%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
70 °C

Procedure

To a stirred solution of methyl 2-hydroxypyridine-5-carboxylate (269.8 mg, 1.762 mmol), N-tert-butoxycarbonylprolinol (354.6 mg, 1.762 mmol), and Ph3P (554.6 mg, 2.114 mmol) in THF (10 mL) was slowly added DIAD (0.42 mL, 2.114 mmol) at room temp, and the resulting mixture was stirred for 6 hr at 70° C. The reaction mixture was concentrated and the residue was chromatographed on silica-gel with n-hexane:EtOAc (5:1, v/v) as eluent to give 262.5 mg (44%) methyl 2-[[1-(tert-butoxycarbonyl)-2-pyrrolidinyl]methoxy]pyridine-5-carboxylate as an oil. 1H-NMR (400 MHz, CDCl3) δ1.47 (s, 9H), 1.85-1.98 (m, 4H), 3.37 (br s, 2H), 3.92 (s, 3H), 4.12-4.33 (br m, 2H), 4.4 (brs, 1H), 6.75 (m, 1H), 8.15 (m, 1H), 8.79 (m, 1H); MS (FAB) m/z 337 (M++1).

Workup

  1. customat room temp
  2. concentrationThe reaction mixture was concentrated
  3. customthe residue was chromatographed on silica-gel with n-hexane:EtOAc (5:1

Sources & evidence

ORD record
ord-2381c081deab42deb5f483e32f2d278c
Source dataset
uspto-grants-2004_06
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US06756378B2

Reaction notes

Loading…

On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes