Sodium triacetoxyborohydride → 2-(1-((5-Chloro-7-morpholinothiazolo[5,4-d]pyrimidin-2-yl)methyl)piperidin-4-yl)propan-2-ol

HRID 1945609Notes

Reaction equation

HRID 1945609 reaction equation
[Cl:1][C:2]1[N:3]=[C:4]([N:13]2[CH2:18][CH2:17][O:16][CH2:15][CH2:14]2)[C:5]2[N:10]=[C:9]([CH:11]=O)[S:8][C:6]=2[N:7]=1.[NH:19]1[CH2:24][CH2:23][CH:22]([C:25]([OH:28])([CH3:27])[CH3:26])[CH2:21][CH2:20]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCCl>[Cl:1][C:2]1[N:3]=[C:4]([N:13]2[CH2:18][CH2:17][O:16][CH2:15][CH2:14]2)[C:5]2[N:10]=[C:9]([CH2:11][N:19]3[CH2:24][CH2:23][CH:22]([C:25]([OH:28])([CH3:27])[CH3:26])[CH2:21][CH2:20]3)[S:8][C:6]=2[N:7]=1

Participants

5

Reactant 3

HCID 5049666Sodium triacetoxyborohydrideHCID 52003212-(4-Piperidyl)-2-propanolHCID 576854055-Chloro-7-morpholinothiazolo[5,4-d]pyrimidine-2-carbaldehyde

Product 1

HCID 596055142-(1-((5-Chloro-7-morpholinothiazolo[5,4-d]pyrimidin-2-yl)methyl)piperidin-4-yl)propan-2-olYield 67.3%

Reagents, catalysts & solvents 1

HCID 111,2-DichloroethaneSolvent

Procedure

A mixture of 5-chloro-7-morpholin-4-yl-thiazolo[5,4-d]pyrimidine-2-carbaldehyde (5.11 g, 17.9 mmol), 2-piperidin-4-ylpropan-2-ol (3.08 g, 21.5 mmol) and 4 Å powdered molecular sieves (9 g) in DCE (85 mL) was stirred at room temperature for 1.5 h before the addition of sodium triacetoxyborohydride (7.61 g, 35.9 mmol). The reaction mixture was stirred for 90 h then filtered through celite, washing the celite bed with DCM. The organic phase was washed with brine and concentrated in vacuo. The resulting residue was purified by column chromatography (Si—PCC, EtOAc:DCM, 0-100%) affording 2-[1-(5-Chloro-7-morpholin-4-ylthiazolo[5,4-d]pyrimidin-2-ylmethyl)piperidin-4-yl]propan-2-ol as an orange solid (4.96 g, 67%). LCMS (Method A): RT 2.77 min [M+H]+ 412.2

Workup

  1. filtrationthen filtered through celite
  2. washwashing the celite bed with DCM
  3. washThe organic phase was washed with brine
  4. concentrationconcentrated in vacuo
  5. customThe resulting residue was purified by column chromatography (Si—PCC, EtOAc:DCM, 0-100%)

Sources & evidence

ORD record
ord-840788603a484b3293d70944dfcc351b
Source dataset
uspto-grants-2013_03
Patent number
US08394796B2

Reaction notes

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