Triethylamine → methyl (2S)-2-{[(tert-butoxy)carbonyl]amino}-3-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]propanoate

HRID 1363463Notes

Reaction equation

C(N(CC)CC)C.[CH3:8][C:9]1([CH3:16])[C:13]([CH3:15])([CH3:14])[O:12][BH:11][O:10]1.O1CCOCC1.[C:23]([O:27][C:28]([NH:30][C@@H:31]([CH2:36][C:37]1[CH:42]=[CH:41][C:40](I)=[CH:39][CH:38]=1)[C:32]([O:34][CH3:35])=[O:33])=[O:29])([CH3:26])([CH3:25])[CH3:24]>C(OCC)(=O)C.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[C:23]([O:27][C:28]([NH:30][C@@H:31]([CH2:36][C:37]1[CH:38]=[CH:39][C:40]([B:11]2[O:12][C:13]([CH3:15])([CH3:14])[C:9]([CH3:16])([CH3:8])[O:10]2)=[CH:41][CH:42]=1)[C:32]([O:34][CH3:35])=[O:33])=[O:29])([CH3:26])([CH3:24])[CH3:25]

Participants

Conditions

Temperature: 100 °C

Procedure

PdCl2(dppf) (127 mg), triethylamine (2.14 ml), 4,4,5,5-tetramethyl-1,3,2-dioxaborolan (1.13 ml) and 1,4-dioxane (21 ml) were added to methyl (2S)-2-[(t-butoxycarbonyl)amino]-3-(4-iodophenyl)propionate (1.8 g) and stirred at 100° C. for 14 hours. The reaction solution was diluted with ethyl acetate, washed with water and dried over magnesium sulfate to remove the solvent. The residue was purified with a silica gel chromatography (hexane-ethyl acetate) to obtain the title compound (1.05 g).

Workup

washwashed with water
dry with materialdried over magnesium sulfate
customto remove the solvent
customThe residue was purified with a silica gel chromatography (hexane-ethyl acetate)

Sources & evidence

ORD record: ord-630641e897694613a39edb3139fe4c3b
Source dataset: uspto-grants-2011_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07884204B2

Reaction notes

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