Benzoyl isothiocyanate → 1-Benzoyl-3-(4-methoxy-7-phenyl-benzothiazol-2-yl)-thiourea

HRID 2308483Notes

Reaction equation

[NH2:1][C:2]1[S:3][C:4]2[C:10]([C:11]3[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=3)=[CH:9][CH:8]=[C:7]([O:17][CH3:18])[C:5]=2[N:6]=1.[C:19]([N:27]=[C:28]=[S:29])(=[O:26])[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1>O1CCOCC1>[C:19]([NH:27][C:28]([NH:1][C:2]1[S:3][C:4]2[C:10]([C:11]3[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=3)=[CH:9][CH:8]=[C:7]([O:17][CH3:18])[C:5]=2[N:6]=1)=[S:29])(=[O:26])[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1

Participants

Conditions

Temperature: 100 °C

Procedure

To a suspension of 2-amino-4-methoxy-7-phenyl-benzothiazole (1.52 g, 6 mmol) in dioxane (60 ml) was added benzoylisothiocyanate (1.45 g, 8.9 mmol) and the mixture heated to 100° C. for 2 h, during which time the suspension dissolved. After cooling the solvent was removed and the solids suspended in hot acetonitrile (100 ml) and filtered while warm (50° C.). The solid collected was washed with acetonitrile (20 ml) then dried under vacuum (0.05 mmHg), at 60° C. to afford the title compound as a pale yellow amorphous solid (1.38 g, 55% yield), MS: m/e=419.0 (M+).

Workup

dissolutiondissolved
temperatureAfter cooling the solvent
customwas removed
filtrationfiltered
temperaturewhile warm (50° C.)
customThe solid collected
washwas washed with acetonitrile (20 ml)
customthen dried under vacuum (0.05 mmHg), at 60° C.

Sources & evidence

ORD record: ord-979a673c0f534d36aa2aa84bf6f7ff3a
Source dataset: uspto-grants-2004_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06835732B2

Reaction notes

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