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

Acetic Acid → Methyl 1-((6-(tert-butyldimethylsilyloxy)naphthalen-2-yl)methyl)azetidine-3-carboxylate

HRID 2404146
Notes
Print preview

Reaction equation

HRID 2404146 reaction equation
[Si:1]([O:8][C:9]1[CH:10]=[C:11]2[C:16](=[CH:17][CH:18]=1)[CH:15]=[C:14]([CH:19]=O)[CH:13]=[CH:12]2)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].CC(O)=O.[NH:25]1[CH2:28][CH:27]([C:29]([O:31][CH3:32])=[O:30])[CH2:26]1.[BH3-]C#N.[Na+]>ClCCCl>[Si:1]([O:8][C:9]1[CH:10]=[C:11]2[C:16](=[CH:17][CH:18]=1)[CH:15]=[C:14]([CH2:19][N:25]1[CH2:28][CH:27]([C:29]([O:31][CH3:32])=[O:30])[CH2:26]1)[CH:13]=[CH:12]2)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:2])[CH3:3]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 5003444Sodium cyanoborohydrideHCID 20132751Methyl azetidine-3-carboxylateHCID 212993096-(Tert-butyldimethylsilyloxy)-2-naphthaldehyde

Product 1

HCID 66926610Methyl 1-((6-(tert-butyldimethylsilyloxy)naphthalen-2-yl)methyl)azetidine-3-carboxylateYield 50%

Reagents, catalysts & solvents 1

HCID 111,2-DichloroethaneSolvent

Conditions

Temperature
85 °C

Procedure

6-(tert-butyldimethylsilyloxy)-2-naphthaldehyde (4.0 g, 14 mmol), AcOH (1.8 g, 28 mmol) and methyl azetidine-3-carboxylate (3.2 g, 28 mmol, 2.0 equiv) in DCE (30 mL) were stirred at 85° C. for 1 h. Then NaBH3CN (1.8 g, 28 mmol, 2.0 equiv) was added to the mixture at 50° C. and stirred for 2 h at 85° C. The reaction mixture was quenched with water, extracted with DCM and washed with brine, dried over Na2SO4 and concentrated to obtain crude product. The crude product was purified by silica gel chromatography (DCM:MeOH=40:1) to give the title compound (2.7 g, 50%) as a yellow oil. ESI-MS (M+1)+: 386.2. 1H NMR (400 MHz, CDCl3) δ: 7.72-7.68 (m, 3H), 7.37-7.34 (m, 1H), 7.15-7.10 (m, 2H), 3.94 (s, 2H), 3.81-3.76 (m, 4H), 3.74 (s, 3H), 3.50-3.44 (m, 1H), 1.02 (s, 9H), 0.25 (s, 6H).

Workup

  1. customThe reaction mixture was quenched with water
  2. extractionextracted with DCM
  3. washwashed with brine
  4. dry with materialdried over Na2SO4
  5. concentrationconcentrated
  6. customto obtain crude product
  7. customThe crude product was purified by silica gel chromatography (DCM:MeOH=40:1)

Sources & evidence

ORD record
ord-4bec657b932b4de6adbcfea019ab5fbc
Source dataset
uspto-grants-2014_08
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08802659B2

Reaction notes

Loading…

On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes