Sodium Bicarbonate → (9-(4-Chloro-3-(2-hydroxyethyl)benzyl)-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)(2-isopropylthiazol-4-yl)methanone

HRID 471164Notes

Reaction equation

HRID 471164 reaction equation
FC(F)(F)C(O)=O.[CH:8]([C:11]1[S:12][CH:13]=[C:14]([C:16]([N:18]2[CH2:23][C:22]3([CH2:28][CH2:27][NH:26][CH2:25][CH2:24]3)[O:21][CH2:20][CH2:19]2)=[O:17])[N:15]=1)([CH3:10])[CH3:9].[Cl:29][C:30]1[CH:37]=[CH:36][C:33]([CH:34]=O)=[CH:32][C:31]=1[CH2:38][CH2:39][OH:40].C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(=O)(O)[O-].[Na+]>CN1C(=O)CCC1.C(O)(=O)C>[Cl:29][C:30]1[CH:37]=[CH:36][C:33]([CH2:34][N:26]2[CH2:25][CH2:24][C:22]3([O:21][CH2:20][CH2:19][N:18]([C:16]([C:14]4[N:15]=[C:11]([CH:8]([CH3:10])[CH3:9])[S:12][CH:13]=4)=[O:17])[CH2:23]3)[CH2:28][CH2:27]2)=[CH:32][C:31]=1[CH2:38][CH2:39][OH:40]

Participants

7

Reactant 4

HCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydride2×HCID 579890474-Chloro-3-(2-hydroxyethyl)benzaldehydeHCID 66964182(2-Isopropylthiazol-4-yl)(1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)methanone trifluoroacetate

Product 1

HCID 57989207(9-(4-Chloro-3-(2-hydroxyethyl)benzyl)-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)(2-isopropylthiazol-4-yl)methanone

Reagents, catalysts & solvents 2

HCID 176Acetic AcidSolventHCID 13387N-methyl-2-pyrrolidoneSolvent2×

Procedure

A solution of (2-isopropylthiazol-4-yl)(1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)methanone trifluoroacetate (example 22, step b) (0.178 g) in NMP (2 mL) was treated with acetic acid (0.032 mL) and stirred for 5 minutes. A solution of 4-chloro-3-(2-hydroxyethyl)benzaldehyde (example 75, step c) (0.154 g) in NMP (3 mL) was then added, the resulting solution was stirred for 1 hour and was then treated with sodium triacetoxyborohydride (0.181 g) and stirred overnight at room temperature. More sodium triacetoxyborohydride (0.404 g) was added and the mixture was stirred for an additional 6 hours, then poured into saturated sodium bicarbonate and extracted twice with ethyl acetate. The combined extracts were washed three times with water, once with brine, then dried over anhydrous magnesium sulphate and purified by flash chromatography on silica eluted with 1:2:97 triethylamine:methanol:dichloromethane to afford the subtitled compound as a colourless gum. Yield 0.157 g.

Workup

  1. stirringthe resulting solution was stirred for 1 hour
  2. stirringstirred overnight at room temperature
  3. stirringthe mixture was stirred for an additional 6 hours
  4. extractionextracted twice with ethyl acetate
  5. washThe combined extracts were washed three times with water
  6. dry with materialonce with brine, then dried over anhydrous magnesium sulphate
  7. custompurified by flash chromatography on silica
  8. washeluted with 1:2:97 triethylamine

Sources & evidence

ORD record
ord-8a3eb67165e94a0e9a16825d5e155bd7
Source dataset
uspto-grants-2014_01
Patent number
US08629271B2

Reaction notes

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