Triphenylphosphine → Ethyl 6-[4-({[3-[2-(2,6-dichlorophenyl)ethyl]-5-(1-methylethyl)-4-isoxazolyl]methyl}oxy)phenyl]-1-naphthalenecarboxylate

HRID 646022Notes

Reaction equation

HRID 646022 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([Cl:8])[C:3]=1[CH2:9][CH2:10][C:11]1[C:15]([CH2:16][OH:17])=[C:14]([CH:18]([CH3:20])[CH3:19])[O:13][N:12]=1.O[C:22]1[CH:27]=[CH:26][C:25]([C:28]2[CH:29]=[C:30]3[C:35](=[CH:36][CH:37]=2)[C:34]([C:38]([O:40][CH2:41][CH3:42])=[O:39])=[CH:33][CH:32]=[CH:31]3)=[CH:24][CH:23]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OC(C)C)=O)=NC(OC(C)C)=O>C1(C)C=CC=CC=1>[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([Cl:8])[C:3]=1[CH2:9][CH2:10][C:11]1[C:15]([CH2:16][O:17][C:22]2[CH:23]=[CH:24][C:25]([C:28]3[CH:29]=[C:30]4[C:35](=[CH:36][CH:37]=3)[C:34]([C:38]([O:40][CH2:41][CH3:42])=[O:39])=[CH:33][CH:32]=[CH:31]4)=[CH:26][CH:27]=2)=[C:14]([CH:18]([CH3:20])[CH3:19])[O:13][N:12]=1

Participants

6

Reactant 4

HCID 11776TriphenylphosphineHCID 75555Diisopropyl diazene-1,2-dicarboxylateHCID 59264856Ethyl 6-(4-hydroxyphenyl)-1-naphthalenecarboxylateHCID 59264863[3-[2-(2,6-Dichlorophenyl)ethyl]-5-(1-methylethyl)-4-isoxazolyl]methanol

Product 1

HCID 59264854Ethyl 6-[4-({[3-[2-(2,6-dichlorophenyl)ethyl]-5-(1-methylethyl)-4-isoxazolyl]methyl}oxy)phenyl]-1-naphthalenecarboxylateYield 55.8%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Conditions

Temperature
80 °C

Procedure

A solution of [3-[2-(2,6-dichlorophenyl)ethyl]-5-(1-methylethyl)-4-isoxazolyl]methanol (0.110 g, 0.35 mmol) (from multiple batches), ethyl 6-(4-hydroxyphenyl)-1-naphthalenecarboxylate (0.102 g, 0.35 mmol), triphenylphosphine (0.092 g, 0.35 mmol) and diisopropyl azodicarboxylate (0.063 mL, 0.35 mmol) in toluene (3.5 mL) was placed in microwave reaction tube and heated to 80° C. for 1000 seconds. The solution was concentrated and purified by chromatography (silica gel, hexane to 1:4 ethyl acetate:hexanes) to provide the title compound (0.115 g, 51.6% as 0.7EtOAc). 1H NMR (DMSO-d6): δ 8.79 (d, J=9 Hz, 1H), 8.28 (s, 1H), 8.22 (d, J=8 Hz, 1H), 8.09 (d, J=7 Hz, 1H), 7.98 (dd, J=2, 9 Hz, 1H), 7.80 (d, J=9 Hz, 2H), 7.60 (m, 1H), 7.42 (d, J=8 Hz, 2H), 7.25 (t, J=8 Hz, 1H), 7.14 (d, J=8 Hz, 2H), 4.98 (s, 2H), 4.40 (q, J=7 Hz, 2H), 3.35 (septet, J=7 Hz, overlapping H2O, 1H), 3.24-3.20 (m, 2H), 2.89-2.85 (m, 2H), 1.37 (t, J=7 Hz, 3H), 1.25 (d, J=7 Hz, 6H). ESI-LCMS m/z 588 (M+H)+.

Workup

  1. concentrationThe solution was concentrated
  2. custompurified by chromatography (silica gel, hexane to 1:4 ethyl acetate:hexanes)

Sources & evidence

ORD record
ord-736214e0973446f78d421f4d2010a6e1
Source dataset
uspto-grants-2010_04
Patent number
US07705028B2

Reaction notes

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