Sodium Carbonate → Ethyl 6-(benzo[d]thiazol-6-ylamino)-4-(isopropylamino)nicotinate

HRID 595460

反応式

HRID 595460 の反応式
Cl[C:2]1[CH:12]=[C:11]([NH:13][CH:14]2[CH2:17]C[CH2:15]2)[C:5]([C:6]([O:8][CH2:9][CH3:10])=[O:7])=[CH:4][N:3]=1.[NH2:18][C:19]1[CH:27]=[CH:26][C:22]2[N:23]=[CH:24][S:25][C:21]=2[CH:20]=1.CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2.C([O-])([O-])=O.[Na+].[Na+]>O1CCOCC1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].O>[S:25]1[C:21]2[CH:20]=[C:19]([NH:18][C:2]3[CH:12]=[C:11]([NH:13][CH:14]([CH3:15])[CH3:17])[C:5]([C:6]([O:8][CH2:9][CH3:10])=[O:7])=[CH:4][N:3]=3)[CH:27]=[CH:26][C:22]=2[N:23]=[CH:24]1

参加物

8

反応物 4

HCID 10340Sodium CarbonateHCID 682886-AminobenzothiazoleHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 89689654Ethyl 6-chloro-4-(cyclobutylamino)nicotinate

生成物 1

HCID 89689730Ethyl 6-(benzo[d]thiazol-6-ylamino)-4-(isopropylamino)nicotinate

試薬・触媒・溶媒 3

HCID 9811564Bis(dibenzylideneacetone)palladium触媒HCID 962Water溶媒HCID 312751,4-Dioxane溶媒

反応条件

温度
115 °C

実験手順

To a solution of ethyl 6-chloro-4-(isopropylamino)nicotinate (2) (5 g, 20.66 mmol) in dioxane (30 mL):H2O (5 mL), 6-amino benzothiazole (20.66 mmol, 1 equiv.), xanthphos (8.2 mmol, 0.4 equiv.) and Na2CO3 (82.6 mmol, 4 equiv.) were added and degassed for 10 min. To the reaction mixture Pd2(dba)3 (8.2 mmol, 0.4 equiv.) was added and degassed again for 10 min. It was then heated at 115° C., overnight. The reaction was cooled and filtered through small pad of celite. The filtrate obtained was concentrated to provide crude material. The crude material was purified by column chromatography through silica gel and EtOAC:pet. Ether as eluent to afford ethyl 6-(benzo[d]thiazol-6-ylamino)-4-(isopropylamino)nicotinate (3). LC/MS: Acquity BEH C18 2.1×50 mm, 1.8 micron; Solvent A=0.1% TFA in water; Solvent B=0.1% TFA in ACN; gradient 0-100% B over 2 min; retention time: 0.78 min; LCMS (ES-API), m/z 357.8 (M+H).

後処理

  1. customdegassed for 10 min
  2. customdegassed again for 10 min
  3. temperatureThe reaction was cooled
  4. filtrationfiltered through small pad of celite
  5. customThe filtrate obtained
  6. concentrationwas concentrated
  7. customto provide crude material
  8. customThe crude material was purified by column chromatography through silica gel and EtOAC

出典と根拠

ORDレコード
ord-d62d0717055144049fdb26eb39c9507f
出典データセット
uspto-grants-2016_01
特許番号
US09242976B2

関連ノート

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