1,2-Dichlorobenzene → HCID 117986071, compound

HRID 1055609Notes

Reaction equation

HRID 1055609 reaction equation
C([O:8][C@H:9]1[C@H:15]([O:16]CC2C=CC=CC=2)[C@@H:14]([O:24]CC2C=CC=CC=2)[C@:13]2([C:33]3[CH:38]=[CH:37][C:36]([Cl:39])=[C:35]([CH2:40][C:41]4[CH:46]=[CH:45][C:44]([O:47][CH2:48][CH3:49])=[CH:43][CH:42]=4)[CH:34]=3)[O:32][C@@:10]1([CH:50]1[O:54][C:53](=[O:55])[NH:52][CH2:51]1)[CH2:11][O:12]2)C1C=CC=CC=1.ClC1C=CC=CC=1Cl>[Pd].CO.O1CCCC1>[Cl:39][C:36]1[CH:37]=[CH:38][C:33]([C@@:13]23[O:32][C@@:10]([CH:50]4[O:54][C:53](=[O:55])[NH:52][CH2:51]4)([CH2:11][O:12]2)[C@@H:9]([OH:8])[C@H:15]([OH:16])[C@H:14]3[OH:24])=[CH:34][C:35]=1[CH2:40][C:41]1[CH:46]=[CH:45][C:44]([O:47][CH2:48][CH3:49])=[CH:43][CH:42]=1

Participants

5

Reactant 2

HCID 72391,2-DichlorobenzeneHCID 118377820HCID 118377820, compound

Product 1

HCID 117986071HCID 117986071, compoundYield 79.2%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 21899815MeOH tetrahydrofuranSolvent

Procedure

To a solution of 5-[(1R,2S,3S,4R,5S)-2,3,4-tribenzyloxy-5-[4-chloro-3-[(4-ethoxyphenyl)methyl]phenyl]-6,8-dioxabicyclo[3.2.1]octan-1-yl]oxazolidin-2-one 27a (113 mg, 0.17 mmol) in a methanol/tetrahydrofuran mixture (v/v=4/1, 10 mL) were added o-dichlorobenzene (0.1 mL, 0.85 mmol) and 10% Pd/C (20 mg, 0.02 mmol) at room temperature. The mixture was stirred at room temperature under H2 for 4 hours and filtered. The filter cake was washed with a methanol/tetrahydrofuran mixture (v/v=4/1, 10 mL×2). The filtrate was concentrated in vacuo and the residue was purified by silica gel chromatography eluted with PE/EtOAc(v/v)=1/1 to give the title compound 27 as a white solid (66.2 mg, 78.8%, HPLC: 90.1%). The compound was characterized by the following spectroscopic data: MS (ESI, pos. ion) m/z: 492.2 [M+H]+; and 1H NMR (400 MHz, DMSO-d6) δ(ppm): 7.54 (s, 1H), 7.42 (m, 2H), 7.31 (m, 1H), 7.16 (m, 2H), 7.34 (m, 2H), 5.68 (d, 1H), 5.18 (d, 2H), 4.81 (t, 1H), 4.11 (m, 1H), 3.98 (m, 4H), 3.69 (t, 1H), 3.48 (m, 3H), 3.30 (m, 1H), 3.21 (m, 1H), 1.32 (t, 3H).

Workup

  1. filtrationfiltered
  2. washThe filter cake was washed with a methanol/tetrahydrofuran mixture (v/v=4/1, 10 mL×2)
  3. concentrationThe filtrate was concentrated in vacuo
  4. customthe residue was purified by silica gel chromatography
  5. washeluted with PE/EtOAc(v/v)=1/1

Sources & evidence

ORD record
ord-e74e371cc31048d3b7f77ba5381fa3f9
Source dataset
uspto-grants-2016_07
Patent number
US09394329B2

Reaction notes

Loading…