Triethylamine → 2{3-[4-(4-Methoxyphenyl)-1,2,3,6-tetrahydro-1-pyridyl]propyl}naphtho[1,8-cd]isothiazole 1,1-dioxide

HRID 1493268Notes

Reaction equation

Cl[CH2:2][CH2:3][CH2:4][N:5]1[C:9]2[CH:10]=[CH:11][CH:12]=[C:13]3[CH:14]=[CH:15][CH:16]=[C:7]([C:8]=23)[S:6]1(=[O:18])=[O:17].C(N(CC)CC)C.[CH3:26][O:27][C:28]1[CH:33]=[CH:32][C:31]([C:34]2[CH2:35][CH2:36][NH:37][CH2:38][CH:39]=2)=[CH:30][CH:29]=1>CN(C)C=O>[CH3:26][O:27][C:28]1[CH:29]=[CH:30][C:31]([C:34]2[CH2:39][CH2:38][N:37]([CH2:2][CH2:3][CH2:4][N:5]3[C:9]4[CH:10]=[CH:11][CH:12]=[C:13]5[CH:14]=[CH:15][CH:16]=[C:7]([C:8]=45)[S:6]3(=[O:18])=[O:17])[CH2:36][CH:35]=2)=[CH:32][CH:33]=1

Participants

Conditions

Temperature: 20 °C

Procedure

The experiment is carried out as in Example 1, starting with 2-(3-chloropropyl)naphtho[1,8-cd]isothiazole 1,1 -dioxide (6.74 g), triethylamine (3.4 cc) and 4-(4-methoxyphenyl)-1,2,3,6-tetrahydropyridine (4.5 g ) in dimethylformamide (70 cc). The mixture is heated for 8 hours at boiling point, then cooled to a temperature of about 20° C. Stirring is continued for 12 hours at this temperature. After purification by flash-chromatography on silica gel, under a current of argon at medium pressure (0.5-1.5 bar) with ethyl acetate as eluant, and recrystallization from boiling acetonitrile (60 cc), 2{3-[4-(4-methoxyphenyl)-1,2,3,6-tetrahydro -1-pyridyl]propyl}naphtho[1,8-cd]isothiazole 1,1-dioxide (2 g) is obtained, m.p. 178° C.

Workup

temperatureThe mixture is heated for 8 hours
customAfter purification by flash-chromatography on silica gel
customunder a current of argon at medium pressure (0.5-1.5 bar) with ethyl acetate as eluant, and recrystallization

Sources & evidence

ORD record: ord-dfa1515e71d3479e8f4104a7267dfe81
Source dataset: uspto-grants-1991_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05021420

Reaction notes

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