Methyl-2-(4-iodophenyl)-2-methyl-propionate → 2-{4-[(8-Cyclopropyl-3,4-dihydro-4,4-dimethylspiro[2H-1-benzopyran-2,1'-cyclopropane]-6-yl)ethynyl]-phenyl}-2-methyl-propionic acid methyl ester

HRID 1765705Notes

Reaction equation

HRID 1765705 reaction equation
[CH:1]1([C:4]2[C:15]3[O:14][C:11]4([CH2:13][CH2:12]4)[CH2:10][C:9]([CH3:17])([CH3:16])[C:8]=3[CH:7]=[C:6]([C:18]#[CH:19])[CH:5]=2)[CH2:3][CH2:2]1.[CH3:20][O:21][C:22](=[O:33])[C:23]([C:26]1[CH:31]=[CH:30][C:29](I)=[CH:28][CH:27]=1)([CH3:25])[CH3:24]>[Cu]I.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.C(N(CC)CC)C>[CH3:20][O:21][C:22](=[O:33])[C:23]([C:26]1[CH:27]=[CH:28][C:29]([C:19]#[C:18][C:6]2[CH:5]=[C:4]([CH:1]3[CH2:3][CH2:2]3)[C:15]3[O:14][C:11]4([CH2:13][CH2:12]4)[CH2:10][C:9]([CH3:16])([CH3:17])[C:8]=3[CH:7]=2)=[CH:30][CH:31]=1)([CH3:25])[CH3:24]

Participants

6

Reactant 2

HCID 21107277Methyl-2-(4-iodophenyl)-2-methyl-propionate2×HCID 225689518-Cyclopropyl-6-ethynyl-3 4-dihydro-4,4-dimethylspiro[2H-1-benzopyran-2,1'-cvclopropane]

Product 1

HCID 690773412-{4-[(8-Cyclopropyl-3,4-dihydro-4,4-dimethylspiro[2H-1-benzopyran-2,1'-cyclopropane]-6-yl)ethynyl]-phenyl}-2-methyl-propionic acid methyl ester

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418476HCID 178418476, compoundCatalystHCID 8471TriethylamineSolvent

Procedure

Following General Procedure B and using 8-cyclopropyl-6-ethynyl-3,4-dihydro-4,4-dimethylspiro[2H-1-benzopyran-2,1′-cyclopropane] (0.096 g, 0.38 mmol), methyl-2-(4-iodo phenyl)-2-methyl-propionate (Reagent 2, 0.127 g, 0.41 mmol), triethyl amine (3 mL), copper(I)iodide (0.040 g, 0.21 mmol) and dichlorobis(triphenylphosphine)palladium(II) (0.080 g, 0.11 mmol) followed by flash column chromatography over silica gel (230–400 mesh), the title compound was obtained as an oil (0.046 g, 47%).

Sources & evidence

ORD record
ord-17c4aac9b69242b9813108331ff62cdb
Source dataset
uspto-grants-2007_06
Patent number
US07226951B2

Reaction notes

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