1-Iodopropane → (4S,5S)-tert-butyl 4-((2-(tert-butyldimethylsilyl)-5-propylthiazol-4-yl)methyl)-5-((tert-butyldimethylsilyloxy)methyl)-2,2-dimethyloxazolidine-3-carboxylate

HRID 1009117Notes

Reaction equation

HRID 1009117 reaction equation
[Si:1]([C:8]1[S:9][CH:10]=[C:11]([CH2:13][C@H:14]2[C@@H:18]([CH2:19][O:20][Si:21]([C:24]([CH3:27])([CH3:26])[CH3:25])([CH3:23])[CH3:22])[O:17][C:16]([CH3:29])([CH3:28])[N:15]2[C:30]([O:32][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:31])[N:12]=1)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].[Li+].[CH3:38][CH2:39][CH2:40][CH2-].ICCC>C1COCC1>[Si:1]([C:8]1[S:9][C:10]([CH2:38][CH2:39][CH3:40])=[C:11]([CH2:13][C@H:14]2[C@@H:18]([CH2:19][O:20][Si:21]([C:24]([CH3:25])([CH3:27])[CH3:26])([CH3:23])[CH3:22])[O:17][C:16]([CH3:29])([CH3:28])[N:15]2[C:30]([O:32][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:31])[N:12]=1)([C:4]([CH3:6])([CH3:7])[CH3:5])([CH3:2])[CH3:3]

Participants

5

Reactant 3

HCID 336431-IodopropaneHCID 61028n-Butyl lithiumHCID 67304891(4S,5S)-Tert-butyl 4-((2-(tert-butyldimethylsilyl)thiazol-4-yl)methyl)-5-((tert-butyldimethylsilyloxy)methyl)-2,2-dimethyloxazolidine-3-carboxylate

Product 1

HCID 67304570(4S,5S)-tert-butyl 4-((2-(tert-butyldimethylsilyl)-5-propylthiazol-4-yl)methyl)-5-((tert-butyldimethylsilyloxy)methyl)-2,2-dimethyloxazolidine-3-carboxylate

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
-50 °C

Procedure

(4S,5S)-Tert-butyl 4-((2-(tert-butyldimethylsilyl)thiazol-4-yl)methyl)-5-((tert-butyldimethylsilyloxy)methyl)-2,2-dimethyloxazolidine-3-carboxylate (0.150 g, 0.269 mmol) in THF (3 mL) was cooled to −78° C. when N-BUTYLLITHIUM (2.5 M in hexanes) (0.119 ml, 0.296 mmol) was added dropwise. The solution was warmed to −50° C. for 40 minutes and then cooled to −78° C. 1-Iodopropane (0.0549 g, 0.323 mmol) was added dropwise and the solution was allowed to slowly warm to −50° C. and stirred for 1 hr. The reaction was quenched with saturated ammonium chloride. The layers were separated and the aqueous layer was extracted with ethyl acetate. The combined organic layers were washed with water, brine and dried over sodium sulfate to afford the title compound, which was used without further purification for the next step.

Workup

  1. additionwas added dropwise
  2. temperaturecooled to −78° C
  3. temperatureto slowly warm to −50° C.
  4. customThe reaction was quenched with saturated ammonium chloride
  5. customThe layers were separated
  6. extractionthe aqueous layer was extracted with ethyl acetate
  7. washThe combined organic layers were washed with water, brine
  8. dry with materialdried over sodium sulfate

Sources & evidence

ORD record
ord-29aed395132342308ab4b5dea7a479e6
Source dataset
uspto-grants-2011_07
Patent number
US07973047B2

Reaction notes

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