Cyanamide → [4-Amino-2-[[4-(4-methyl-1-piperazinyl)phenyl]amino]-5-thiazolyl](2,3-dihydro-1,4-benzodioxin-6-yl)methanone

HRID 353737Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 353737
[N:1]([C:4]1[CH:9]=[CH:8][C:7]([N:10]2[CH2:15][CH2:14][N:13]([CH3:16])[CH2:12][CH2:11]2)=[CH:6][CH:5]=1)=[C:2]=[S:3].[N:17]#[C:18][NH2:19].CC(C)([O-])C.[K+].Br[CH2:27][C:28]([C:30]1[CH:39]=[CH:38][C:33]2[O:34][CH2:35][CH2:36][O:37][C:32]=2[CH:31]=1)=[O:29]>C(#N)C.C(O)(C)(C)C>[NH2:17][C:18]1[N:19]=[C:2]([NH:1][C:4]2[CH:5]=[CH:6][C:7]([N:10]3[CH2:11][CH2:12][N:13]([CH3:16])[CH2:14][CH2:15]3)=[CH:8][CH:9]=2)[S:3][C:27]=1[C:28]([C:30]1[CH:39]=[CH:38][C:33]2[O:34][CH2:35][CH2:36][O:37][C:32]=2[CH:31]=1)=[O:29]

Komponenten

7

Edukt 4

HCID 9864CyanamideHCID 27761712-Bromo-1-(2,3-dihydro-1,4-benzodioxin-6-yl)ethan-1-oneHCID 137183971-(4-Isothiocyanatophenyl)-4-methylpiperazineHCID 23665647Potassium tert-butoxide

Produkt 1

HCID 9911652[4-Amino-2-[[4-(4-methyl-1-piperazinyl)phenyl]amino]-5-thiazolyl](2,3-dihydro-1,4-benzodioxin-6-yl)methanoneAusbeute 66 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6342AcetonitrileLösungsmittelHCID 6386tert-ButanolLösungsmittel

Versuchsvorschrift

tert-Butanol (4 mL) and then 1-(4-isothiocyanatophenyl)-4-methyl piperazine (of Example 1; 219 mg, 1 mmol) were added to a solution of cyanamide (44 mg, 1.05 mmol) (Aldrich) in acetonitrile (5 mL). Potassium t-butoxide (1 M in tert-butanol; 1 mL, 1 mmol) was added and the solution was stirred for 30 min. 2-Bromo-1-(2,3-dihydro-1,4-benzodioxin-6-yl)ethanone (257 mg, 1 mmol) (Maybridge Chemical Company Ltd.) was added, and the solution was stirred at room temperature for 3 days. The yellow solid was filtered off and washed with cold acetonitrile and then ether to give [4-amino-2-[[4-(4-methyl-1-piperazinyl)phenyl]amino]-5-thiazolyl](2,3-dihydro-1,4-benzodioxin-6-yl)methanone (280 mg, 66%).

Aufarbeitung

  1. stirringthe solution was stirred at room temperature for 3 days
  2. filtrationThe yellow solid was filtered off
  3. washwashed with cold acetonitrile

Quellen und Nachweise

ORD-Eintrag
ord-ba95a5db59124a359fccdbe0ed662338
Quelldatensatz
uspto-grants-2004_06
Patentnummer
US06756374B2

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