Diethyl Ether → (3S,4S,6R)-tetrahydro-3-hexyl-4-[(t-butyldimethylsilyl)oxy-]6-undecyl-2H-pyran-2-one

HRID 2106844Notes

Reaction equation

HRID 2106844 reaction equation
[CH2:1]([C@H:7]1[C@@H:12]([OH:13])[CH2:11][C@@H:10]([CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH3:24])[O:9][C:8]1=[O:25])[CH2:2][CH2:3][CH2:4][CH2:5][CH3:6].[C:26]([Si:30]([CH3:33])([CH3:32])Cl)([CH3:29])([CH3:28])[CH3:27].CCOCC>CN(C=O)C>[CH2:1]([C@H:7]1[C@@H:12]([O:13][Si:30]([C:26]([CH3:29])([CH3:28])[CH3:27])([CH3:33])[CH3:32])[CH2:11][C@@H:10]([CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH3:24])[O:9][C:8]1=[O:25])[CH2:2][CH2:3][CH2:4][CH2:5][CH3:6]

Participants

5

Reactant 3

HCID 3283Diethyl EtherHCID 28928tert-Butyldimethylsilyl chlorideHCID 11013671(3S,4S,6R)-3-Hexyltetrahydro-4-hydroxy-6-undecyl-2H-pyran-2-one

Product 1

HCID 22847451(3S,4S,6R)-tetrahydro-3-hexyl-4-[(t-butyldimethylsilyl)oxy-]6-undecyl-2H-pyran-2-oneYield 63.5%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent2×

Procedure

(M)(d) 1.5 g of (3S,4S,6R)-tetrahydro-3-hexyl-4-hydroxy-6-undecyl-2H-pyran-2-one were dissolved in 8 ml of DMF. 0.85 g of t-butyldimethylchlorosilane in 4 ml of DMF were then added dropwise. The mixture was stirred for 48 hours. The reaction mixture was poured in to 100 ml of ether and washed with 1N hydrochloric acid. The organic phase was dried, filtered and evaporated. The material obtained was chromatographed on silica gel. There were obtained 1.26 g of (3S,4S,6R)-tetrahydro-3-hexyl-4-[(t-butyldimethylsilyl)oxy]-6-undecyl-2H-pyran-2-one, MS: 411 (M+ -t-butyl).

Workup

  1. washwashed with 1N hydrochloric acid
  2. customThe organic phase was dried
  3. filtrationfiltered
  4. customevaporated
  5. customThe material obtained
  6. customwas chromatographed on silica gel

Sources & evidence

ORD record
ord-443b7f69606d48689841134a0849a597
Source dataset
uspto-grants-1990_06
Patent number
US04931463

Reaction notes

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