Formaldehyde → HCID 68503636, compound

HRID 1713476Notes

Reaction equation

HRID 1713476 reaction equation
[Si:1]([O:18][CH2:19][CH2:20][C:21]1([C:43]2[CH:48]=[CH:47][CH:46]=[CH:45][CH:44]=2)[N:25]([C:26]2[S:27][C:28]3[CH2:29][NH:30][CH2:31][CH2:32][C:33]=3[N:34]=2)[N:24]=[C:23]([C:35]2[CH:40]=[C:39]([F:41])[CH:38]=[CH:37][C:36]=2[F:42])[S:22]1)([C:14]([CH3:17])([CH3:16])[CH3:15])([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C=O.[C:51](O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C([O-])([O-])=O.[Na+].[Na+]>ClCCCl>[Si:1]([O:18][CH2:19][CH2:20][C:21]1([C:43]2[CH:44]=[CH:45][CH:46]=[CH:47][CH:48]=2)[N:25]([C:26]2[S:27][C:28]3[CH2:29][N:30]([CH3:51])[CH2:31][CH2:32][C:33]=3[N:34]=2)[N:24]=[C:23]([C:35]2[CH:40]=[C:39]([F:41])[CH:38]=[CH:37][C:36]=2[F:42])[S:22]1)([C:14]([CH3:16])([CH3:15])[CH3:17])([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

6

Reactant 4

HCID 712FormaldehydeHCID 10340Sodium CarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 68500709HCID 68500709, compound

Product 1

HCID 68503636HCID 68503636, compound

Reagents, catalysts & solvents 1

HCID 111,2-DichloroethaneSolvent

Procedure

To a solution of 2-(2-(2-(tert-butyldiphenylsilyloxy)ethyl)-5-(2,5-difluorophenyl)-2-phenyl-1,3,4-thiadiazol-3 (2H)-yl)-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine (0.157 g, 0.225 mmol) in 5 mL DCE was added formaldehyde (0.067 mL, 37 wt % in water, 0.901 mmol) followed by sodium triacetoxyborohydride (0.052 g, 0.248 mmol). The resulting suspension was stirred vigorously at room temperature overnight, then treated with saturated Na2CO3 solution (30 mL) and stirred for 10 minutes. The mixture was extracted with EtOAc (3×30 mL) and the combined organic phases were washed with brine (20 mL), dried over Na2SO4 and concentrated in vacuo. The residue was purified by flash column chromatography (0-1% MeOH/DCM) to afford the desired product as a bright yellow foam, 0.119 g, 74%.

Workup

  1. stirringstirred for 10 minutes
  2. extractionThe mixture was extracted with EtOAc (3×30 mL)
  3. washthe combined organic phases were washed with brine (20 mL)
  4. dry with materialdried over Na2SO4
  5. concentrationconcentrated in vacuo
  6. customThe residue was purified by flash column chromatography (0-1% MeOH/DCM)

Sources & evidence

ORD record
ord-216f06f0e3404bc481b3b596d3b53537
Source dataset
uspto-grants-2010_09
Patent number
US07795282B2

Reaction notes

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