Hydrochloric Acid → HCID 178444366, compound

HRID 2268102Notes

Reaction equation

HRID 2268102 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]([O:8][C:9]([F:12])([F:11])[F:10])=[CH:4][CH:3]=1.B(OC)(OC)OC.Cl.B(O)(O)O.[CH2:25]([C@H:30]1[CH2:35][CH2:34][C@H:33]([C:36]2[CH:41]=[C:40]([F:42])[C:39](I)=[C:38]([F:44])[CH:37]=2)[CH2:32][CH2:31]1)[CH2:26][CH2:27][CH2:28][CH3:29].C(C1CCC(=O)CC1)CCCC.FC1C=C([Mg]Br)C=C(F)C=1.[Li]CCCC.II.C([O-])([O-])=O.[Na+].[Na+]>C1COCC1.C1COCC1.CN(CCN(C)C)C.C1(C)C=CC=CC=1.O>[CH2:25]([C@H:30]1[CH2:35][CH2:34][C@H:33]([C:36]2[CH:37]=[C:38]([F:44])[C:39]([C:2]3[CH:7]=[CH:6][C:5]([O:8][C:9]([F:12])([F:11])[F:10])=[CH:4][CH:3]=3)=[C:40]([F:42])[CH:41]=2)[CH2:32][CH2:31]1)[CH2:26][CH2:27][CH2:28][CH3:29]

Participants

15

Reactant 10

HCID 313Hydrochloric AcidHCID 807IodineHCID 7628Boric AcidHCID 8470Trimethyl borateHCID 10340Sodium CarbonateHCID 5210081-Bromo-4-(trifluoromethoxy)benzeneHCID 5660974-PentylcyclohexanoneHCID 178418339ButyllithiumHCID 178444369HCID 178444369, compoundHCID 178505930HCID 178505930, compound

Product 1

HCID 178444366HCID 178444366, compound

Reagents, catalysts & solvents 4

HCID 962WaterSolventHCID 1140TolueneSolventHCID 8028TetrahydrofuranSolvent3×HCID 86588997Thf tmedaSolvent

Procedure

A solution of 0.1 mol of p-bromotrifluoromethoxybenzene in 100 ml of THF is added dropwise to a suspension of 0.1 mol of Mg turnings in 50 ml of THF at such a rate that the reaction mixture boils gently. After the mixture has been stirred for one hour, 0.1 mol of trimethyl borate is added dropwise at room temperature, and the mixture is stirred for a further hour and hydrolyzed using dilute hydrochloric acid. After extractive work-up, the resultant boric acid (0.05 mol) is refluxed for two hours together with 0.05 mol of 4-(trans-4-n-pentyl-cyclohexyl)-2,6-difluoroiodobenzene [obtainable by reacting 4-pentylcyclohexanone with 3,5-difluorophenylmagnesium bromide, eliminating water, and hydrogenating the cyclohexylbenzenes on Pd/C. The resultant 3,5-difluoropenyl [sic] compound is metallated at −70° in THF/TMEDA using n-BuLi and subsequently reacted with iodine in THF at −70 °], 38 ml of 2 molar aqueous Na2CO3 solution, 0.6 g of tetrakis(triphenylphosphine)palladium-(0) and 75 ml of toluene. Customary aqueous work-up and chromatographic purification give 4-(trans-4-n-pentylcyclohexyl)-2,6-difluoro-4′-trifluoromethoxybiphenyl.

Workup

  1. stirringthe mixture is stirred for a further hour
  2. customCustomary aqueous work-up and chromatographic purification

Sources & evidence

ORD record
ord-36aee8062c8f41a497bb95dc1c40f956
Source dataset
uspto-grants-2001_12
Patent number
US06326066B1

Reaction notes

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