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

HRID 1693652Notes

Reaction equation

[CH:1]1([C:5]2[O:9][N:8]=[C:7]([C:10]3[C:15]([Cl:16])=[CH:14][CH:13]=[CH:12][C:11]=3[Cl:17])[C:6]=2[CH2:18][OH:19])[CH2:4][CH2:3][CH2:2]1.O[C:21]1[CH:26]=[CH:25][C:24]([C:27]2[CH:28]=[C:29]3[C:34](=[CH:35][CH:36]=2)[C:33]([C:37]([O:39][CH3:40])=[O:38])=[CH:32][CH:31]=[CH:30]3)=[CH:23][CH:22]=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>ClCCl>[CH:1]1([C:5]2[O:9][N:8]=[C:7]([C:10]3[C:11]([Cl:17])=[CH:12][CH:13]=[CH:14][C:15]=3[Cl:16])[C:6]=2[CH2:18][O:19][C:21]2[CH:22]=[CH:23][C:24]([C:27]3[CH:28]=[C:29]4[C:34](=[CH:35][CH:36]=3)[C:33]([C:37]([O:39][CH3:40])=[O:38])=[CH:32][CH:31]=[CH:30]4)=[CH:25][CH:26]=2)[CH2:2][CH2:3][CH2:4]1

Participants

Conditions

Temperature: 100 °C

Procedure

To a solution of [5-cyclobutyl-3-(2,6-dichlorophenyl)-4-isoxazolyl]methanol (150 mg, 0.503 mmol), methyl 6-(4-hydroxyphenyl)-1-naphthalenecarboxylate (140 mg, 0.503 mmol), triphenylphosphine (145 mg, 0.553 mmol) in dichloromethane (1.5 mL) was added diisopropyl azodicarboxylate (0.099 mL, 0.553 mmol) dropwise. The solution was heated in a microwave reactor at 100° C. for 10 minutes. The product was purified by chromatography (silica gel, 0-15% ethyl acetate in hexanes gradient elution) to afford a white solid (0.069 g, 25%). 1H-NMR (DMSO-d6,) 8.77 (d, J=9 Hz, 1H), 8.23-8.20 (m, 2H), 8.09 (d, J=9 Hz, 1H), 7.93 (d, J=11 Hz, 1H), 7.70-7.51 (m, 6H), 6.90 (d, J=9 Hz, 2H), 4.83 (s, 2H), 4.00 (quintet, J=9 Hz, 1H), 3.92 (s, 3H), 2.43-2.31 (m, 4H), 2.10-1.92 (m, 2H). APCI-LCMS m/z 558 (M+H)+.

Workup

customThe product was purified by chromatography (silica gel, 0-15% ethyl acetate in hexanes gradient elution)

Sources & evidence

ORD record: ord-95da6950c9c943188c4aec507a651763
Source dataset: uspto-grants-2012_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08158665B2

Reaction notes

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