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Sodium cyanoborohydride → N-(3-{[2-((1S,2S)-6-Fluoro-2-hydroxy-1-isopropyl-1,2,3,4-tetrahydro-naphthalen-2-yl)-ethyl]-methyl-amino}-propyl)-3-methoxy-2-methoxymethyl-2-methyl-propionamide

HRID 2090569
Notes
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Reaction equation

HRID 2090569 reaction equation
[F:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[C@H:8]([CH:12]([CH3:14])[CH3:13])[C@:7]([CH2:16][CH2:17][NH:18][CH3:19])([OH:15])[CH2:6][CH2:5]2.[CH3:20][O:21][CH2:22][C:23]([CH2:32][O:33][CH3:34])([CH3:31])[C:24]([NH:26][CH2:27][CH2:28][CH:29]=O)=[O:25].C([BH3-])#N.[Na+]>C(Cl)Cl.CC(O)=O>[F:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[C@H:8]([CH:12]([CH3:13])[CH3:14])[C@:7]([CH2:16][CH2:17][N:18]([CH3:19])[CH2:29][CH2:28][CH2:27][NH:26][C:24](=[O:25])[C:23]([CH2:32][O:33][CH3:34])([CH3:31])[CH2:22][O:21][CH3:20])([OH:15])[CH2:6][CH2:5]2
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 3

HCID 5003444Sodium cyanoborohydrideHCID 67337722(1S,2S)-6-fluoro-1-isopropyl-2-(2-methylamino-ethyl)-1,2,3,4-tetrahydro-naphthalen-2-olHCID 866419283-methoxy-2-methoxymethyl-2-methyl-N-(3-oxo-propyl)-propionamide

Product 1

HCID 67337793N-(3-{[2-((1S,2S)-6-Fluoro-2-hydroxy-1-isopropyl-1,2,3,4-tetrahydro-naphthalen-2-yl)-ethyl]-methyl-amino}-propyl)-3-methoxy-2-methoxymethyl-2-methyl-propionamideYield 91.8%

Reagents, catalysts & solvents 2

HCID 176Acetic AcidSolventHCID 6344DichloromethaneSolvent

Procedure

6.55 g of (1S,2S)-6-fluoro-1-isopropyl-2-(2-methylamino-ethyl)-1,2,3,4-tetrahydro-naphthalen-2-ol were dissolved in DCM (138 mL)/AcOH (15 mL). 5.36 g of 3-methoxy-2-methoxymethyl-2-methyl-N-(3-oxo-propyl)-propionamide and 6.39 g of sodium cyanoborohydride were added. The reaction mixture was stirred for 2 h at room temperature, quenched with sat.-NaHCO3 and extracted with DCM. The organic phase was washed with brine, dried over anh. Na2SO4 and concentrated in vacuo. The resulting crude material was purified by CC using DCM/MeOH/NEt3 from 100/0/1 to 40/1/0.4 as eluant to yield 10.57 g of N-(3-{[2-((1S,2S)-6-Fluoro-2-hydroxy-1-isopropyl-1,2,3,4-tetrahydro-naphthalen-2-yl)-ethyl]-methyl-amino}-propyl)-3-methoxy-2-methoxymethyl-2-methyl-propionamide as amber resin.

Workup

  1. customquenched with sat.-NaHCO3
  2. extractionextracted with DCM
  3. washThe organic phase was washed with brine
  4. dry with materialdried over anh. Na2SO4
  5. concentrationconcentrated in vacuo
  6. customThe resulting crude material was purified by CC

Sources & evidence

ORD record
ord-fd1a2cad5dea4a26b67880e020c1c479
Source dataset
uspto-grants-2013_05
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08436205B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes