Hydrochloric Acid → HCID 178527405, compound

HRID 853138Notes

Reaction equation

HRID 853138 reaction equation
[CH2:1]([S:8]([N:11]([CH2:35][C:36]([F:39])([F:38])[F:37])[C@H:12]1[CH2:17][CH2:16][C@H:15]([C:18]([O:27][Si](CC)(CC)CC)([C:23]([F:26])([F:25])[F:24])[C:19]([F:22])([F:21])[F:20])[CH2:14][CH2:13]1)(=[O:10])=[O:9])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C[Si]([N-][Si](C)(C)C)(C)C.[Li+].[CH2:50](Br)[C:51]1[CH:56]=[CH:55][CH:54]=[CH:53][CH:52]=1.Cl>C1COCC1.CCOCC>[F:39][C:36]([F:37])([F:38])[CH2:35][N:11]([C@H:12]1[CH2:17][CH2:16][C@H:15]([C:18]([OH:27])([C:19]([F:22])([F:20])[F:21])[C:23]([F:24])([F:25])[F:26])[CH2:14][CH2:13]1)[S:8]([CH:1]([C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1)[CH2:50][C:51]1[CH:56]=[CH:55][CH:54]=[CH:53][CH:52]=1)(=[O:10])=[O:9]

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 7498Benzyl BromideHCID 2733832Lithium HexamethyldisilazideHCID 178477575HCID 178477575, compound

Product 1

HCID 178527405HCID 178527405, compoundYield 105.7%

Reagents, catalysts & solvents 2

HCID 3283Diethyl EtherSolventHCID 8028TetrahydrofuranSolvent2×

Procedure

A solution of 50 mg (0.08 mmol) of trans benzyl-N-(2,2,2-trifluoro-ethyl)-N-[4-(2,2,2-trifluoro-1-triethylsilanyloxy-1-trifluoromethyl-ethyl)-cyclohexyl]-sulfonamide (example 30.1) in 0.5 mL of THF was cooled to −78° C. and treated with 0.11 mL of a 1M solution lithium bis(trimethylsilyl)amide in THF. The mixture was allowed to reach ca −5° C. within 30 min and treated with 0.11 mL (0.1 mmol) of benzylbromide. The mixture was stirred overnight and distributed between diluted aqueous solution of HCl and Et2O. The combined organic phases were dried over Na2SO4 and the solvent was evaporated. The residue was redissolved in MeOH and treated with 0.5 mL of a 2M solution of NaOMe in MeOH. Distribution of this solution between a saturated aqueous solution of NH4Cl and Et2O, drying of the combined organic phases over Na2SO4, evaporation and column chromatography on silica gel with heptane/EtOAc 4:1 gave 50 mg (76%) of (rac) trans 1,2-diphenyl-ethanesulfonic acid (2,2,2-trifluoro-ethyl)-[4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethyl-ethyl)-cyclohexyl]-amide as a colorless foam, MS: 590 (M−H)−.

Workup

  1. dry with materialThe combined organic phases were dried over Na2SO4
  2. customthe solvent was evaporated
  3. dissolutionThe residue was redissolved in MeOH
  4. additiontreated with 0.5 mL of a 2M solution of NaOMe in MeOH
  5. dry with materialDistribution of this solution between a saturated aqueous solution of NH4Cl and Et2O, drying of the combined organic phases over Na2SO4, evaporation and column chromatography on silica gel with heptane/EtOAc 4:1

Sources & evidence

ORD record
ord-5fa07ce44b4843009a2109e121738289
Source dataset
uspto-grants-2007_08
Patent number
US07253282B2

Reaction notes

Loading…