Trityl chloride → 4-[(Trityloxy)methyl]cyclohexanol

HRID 1426601Notes

Reaction equation

HRID 1426601 reaction equation
[OH:1][CH2:2][CH:3]1[CH2:8][CH2:7][CH:6]([OH:9])[CH2:5][CH2:4]1.[C:10]1([C:16](Cl)([C:23]2[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=2)[C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1>N1C=CC=CC=1>[C:16]([O:1][CH2:2][CH:3]1[CH2:8][CH2:7][CH:6]([OH:9])[CH2:5][CH2:4]1)([C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1)([C:23]1[CH:24]=[CH:25][CH:26]=[CH:27][CH:28]=1)[C:17]1[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=1

Participants

4

Reactant 2

HCID 6456Trityl chlorideHCID 12892866Rac-(1s,4s)-4-(hydroxymethyl)cyclohexanol

Product 1

HCID 574779614-[(Trityloxy)methyl]cyclohexanol

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Conditions

Temperature
0 °C

Procedure

4-(Hydroxymethyl)cyclohexanol (2.0 g, 0.015 mol) was dissolved in pyridine (15.0 mL) and the mixture was cooled to 0° C. To the reaction was added triphenylmethyl chloride (4.7 g, 0.017 mol) and the resulting mixture was stirred at 0° C. for 2 hours and at 25° C. for 16 hours. The reaction was then concentrated using a rotory evaporator, and the concentrate was extracted with ethyl acetate. The organic extracts were washed with water, saturated NaCl, dried (MgSO4) and then concentrated in vacuo. The reaction was chromatographed on silica gel using 30% EtOAc/hexanes to give the cis isomer (0.74 g) 1H NMR(CDCl3): δ 7.52 (m, 6H), 7.27 (m, 9H), 3.98 (m, 1H), 2.93 (m, 2H), 1.21-1.68 (m, 9H); and the trans isomer (2.72 g) 1H NMR(CDCl3): δ 7.44 (m, 6H), 7.20-7.31 (m, 9H), 3.54 (m, 1H), 2.88 (m, 2H), 1.98 (m, 2H), 1.88 (m, 2H), 1.60 (m, 1H), 0.99-1.37 (m, 4H).

Workup

  1. concentrationThe reaction was then concentrated
  2. customa rotory evaporator
  3. extractionthe concentrate was extracted with ethyl acetate
  4. washThe organic extracts were washed with water, saturated NaCl
  5. dry with materialdried (MgSO4)
  6. concentrationconcentrated in vacuo
  7. customThe reaction was chromatographed on silica gel using 30% EtOAc/hexanes
  8. customto give the cis isomer (0.74 g) 1H NMR(CDCl3): δ 7.52 (m, 6H), 7.27 (m, 9H), 3.98 (m, 1H), 2.93 (m, 2H), 1.21-1.68 (m, 9H)

Sources & evidence

ORD record
ord-c12564b334d84d2993e8099b430f6f01
Source dataset
uspto-grants-2015_01
Patent number
US08933086B2

Reaction notes

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