5,5,8,8-Tetramethyl-5,6,7,8-tetrahydronaphthalen-2-amine → Methyl 4-[1-pentyl-3-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-naphthalen-2-yl)-ureido]-benzoate

HRID 1759781Notes

Reaction equation

[CH3:1][O:2][C:3]([C:5]1[CH:10]=[CH:9][C:8]([N:11]([CH2:15][CH2:16][CH2:17][CH2:18][CH3:19])[C:12](Cl)=[O:13])=[CH:7][CH:6]=1)=[O:4].[CH3:20][C:21]1([CH3:34])[CH2:30][CH2:29][C:28]([CH3:32])([CH3:31])[C:27]2[CH:26]=[C:25]([NH2:33])[CH:24]=[CH:23][C:22]1=2>N1C=CC=CC=1>[CH2:15]([N:11]([C:8]1[CH:9]=[CH:10][C:5]([C:3]([O:2][CH3:1])=[O:4])=[CH:6][CH:7]=1)[C:12]([NH:33][C:25]1[CH:24]=[CH:23][C:22]2[C:21]([CH3:34])([CH3:20])[CH2:30][CH2:29][C:28]([CH3:32])([CH3:31])[C:27]=2[CH:26]=1)=[O:13])[CH2:16][CH2:17][CH2:18][CH3:19]

Participants

Conditions

Temperature: 40 °C

Procedure

A solution of 4-methoxycarbonylphenyl-pentyl-carbamoyl chloride (45) (180 mg, 0.63 mmole) in 5 mL pyridine was treated with 130 mg of 5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-naphthalen-2-ylamine (1.05 eq.) and stirred at 40° C. for 15 hours. The reaction mixture was concentrated in vacuo to give an orange oil which was purified by flash chromatography (SiO2, 10%-20% ethyl acetate/hexanes) to provide 190 mg (67%) of methyl 4-[1-pentyl-3-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-naphthalen-2-yl)-ureido]-benzoate (47) as a colorless oil.

Workup

concentrationThe reaction mixture was concentrated in vacuo
customto give an orange oil which
customwas purified by flash chromatography (SiO2, 10%-20% ethyl acetate/hexanes)

Sources & evidence

ORD record: ord-c98db08afc094407bdef0f6b90beae20
Source dataset: uspto-grants-2005_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06838472B2

Reaction notes

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