Ethyl 4-[(7,8-dihydro-8,8-dimethyl-5-(1-pentynyl)naphth-3-yl)ethynyl]benzoate → Ethyl 4-[(7,8-dihydro-8,8-dimethyl-5-(1-pentynyl)naphth-2-yl)ethynyl]benzoate

HRID 277541Notes

Reaction equation

HRID 277541 reaction equation
[CH3:1][C:2]1([CH3:30])[C:11]2[CH:10]=[CH:9][C:8](C#CC3C=CC(C(OCC)=O)=CC=3)=[CH:7][C:6]=2[C:5]([C:25]#[C:26][CH2:27][CH2:28][CH3:29])=[CH:4][CH2:3]1.FC(F)(F)S(OC1C2C=CC([C:49]#[C:50][C:51]3[CH:61]=[CH:60][C:54]([C:55]([O:57][CH2:58][CH3:59])=[O:56])=[CH:53][CH:52]=3)=CC=2C(C)(C)CC=1)(=O)=O>>[CH3:1][C:2]1([CH3:30])[C:11]2[CH:10]=[C:9]([C:49]#[C:50][C:51]3[CH:61]=[CH:60][C:54]([C:55]([O:57][CH2:58][CH3:59])=[O:56])=[CH:53][CH:52]=3)[CH:8]=[CH:7][C:6]=2[C:5]([C:25]#[C:26][CH2:27][CH2:28][CH3:29])=[CH:4][CH2:3]1

Participants

3

Reactant 2

HCID 18314569Ethyl 4-[(7,8-dihydro-8,8-dimethyl-5-(1-pentynyl)naphth-3-yl)ethynyl]benzoate2×HCID 18314575Ethyl 4-[(5-trifluoromethylsulfonyloxy-7,8-dihydro-8,8-dimethylnaphth-2-yl)ethynyl]benzoate2×

Product 1

HCID 18314584Ethyl 4-[(7,8-dihydro-8,8-dimethyl-5-(1-pentynyl)naphth-2-yl)ethynyl]benzoate

Procedure

Employing the same general procedure as for the preparation of ethyl 4-[(7,8-dihydro-8,8-dimethyl-5-(1-pentynyl)naphth-3-yl)ethynyl]benzoate (Compound 75), 200 mg (0.42 mmol) of ethyl 4-[(5-trifluoromethylsulfonyloxy-7,8-dihydro-8,8-dimethylnaphth-2-yl)ethynyl]benzoate (Compound 87) was converted into the title compound (pale yellow oil) using 286 mg (4.2 mmol) of pentyne, 60 mg (0.08 mmol) of bis(triphenylphosphine)palladium (II) chloride and 20 mg (0.11 mmol) of cuprous iodide.

Sources & evidence

ORD record
ord-fa5c7828956e463e85ae896a98031f67
Source dataset
uspto-grants-2002_03
Patent number
US06355806B1

Reaction notes

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