Benzyl Alcohol → (1R,3S)-1-(Boc-amino)-3-(Cbz-amino)cyclopentane

HRID 706899Notes

Reaction equation

HRID 706899 reaction equation
[C:1]([O:5][C:6]([NH:8][C@@H:9]1[CH2:13][CH2:12][C@H:11](C(O)=O)[CH2:10]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C1(P(N=[N+]=[N-])(C2C=CC=CC=2)=[O:24])C=CC=CC=1.C([N:36]([CH2:39]C)CC)C.[CH2:41]([OH:48])[C:42]1[CH:47]=[CH:46][CH:45]=[CH:44][CH:43]=1>C1(C)C=CC=CC=1>[C:1]([O:5][C:6]([NH:8][C@@H:9]1[CH2:13][CH2:12][C@H:11]([NH:36][C:39](=[O:24])[O:48][CH2:41][C:42]2[CH:47]=[CH:46][CH:45]=[CH:44][CH:43]=2)[CH2:10]1)=[O:7])([CH3:2])([CH3:3])[CH3:4]

Participants

6

Reactant 4

HCID 244Benzyl AlcoholHCID 8471TriethylamineHCID 199401P,P-Diphenylphosphinic azideHCID 1512529(1S,3R)-3-(((tert-butoxy)carbonyl)amino)cyclopentane-1-carboxylic acid

Product 1

HCID 69244770(1R,3S)-1-(Boc-amino)-3-(Cbz-amino)cyclopentane

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Conditions

Temperature
100 °C

Procedure

(1S,3R)-3-(tert-butoxycarbonylamino)cyclopentanecarboxylic acid (1.03 g), diphenylphosphoryl azide (DPPA, 1.00 mL), triethylamine (0.929 mL), and benzyl alcohol (0.931 mL) were combined in toluene (10 mL) and stirred at 100° C. for 24 hours. The solution was cooled and chromatographed on silica gel using 10% ethyl acetate/hexanes to give the pure product.

Workup

  1. temperatureThe solution was cooled
  2. customchromatographed on silica gel using 10% ethyl acetate/hexanes
  3. customto give the pure product

Sources & evidence

ORD record
ord-8109c859107b446bae7f313f33f1db1d
Source dataset
uspto-grants-2015_11
Patent number
US09174982B2

Reaction notes

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