Hydrochloric Acid → tert-butyl (3S,4S,5R)-1-(3-aminopyridin-4-yl)-4-cyano-5-methylpiperidin-3-ylcarbamate

HRID 879225

反応式

HRID 879225 の反応式
C(OC([NH:8][C:9]1[CH:10]=[N:11][CH:12]=[CH:13][C:14]=1[N:15]1[CH2:20][C@H:19]([CH3:21])[C@H:18]([C:22]#[N:23])[C@H:17]([NH:24][C:25](=[O:31])[O:26][C:27]([CH3:30])([CH3:29])[CH3:28])[CH2:16]1)=O)(C)(C)C.Cl.O1CCOCC1.CCN(C(C)C)C(C)C.C(ON1C(=O)CCC1=O)(OC(C)(C)C)=O>C(Cl)Cl>[NH2:8][C:9]1[CH:10]=[N:11][CH:12]=[CH:13][C:14]=1[N:15]1[CH2:20][C@H:19]([CH3:21])[C@H:18]([C:22]#[N:23])[C@H:17]([NH:24][C:25](=[O:31])[O:26][C:27]([CH3:30])([CH3:29])[CH3:28])[CH2:16]1

参加物

7

反応物 5

HCID 313Hydrochloric AcidHCID 312751,4-DioxaneHCID 81531DiisopropylethylamineHCID 83168Carbonic acid, 1,1-dimethylethyl 2,5-dioxo-1-pyrrolidinyl esterHCID 86705276tert-butyl ((3S,4S,5R)-1-(3-((tert-butoxycarbonyl)amino)pyridin-4-yl)-4-cyano-5-methylpiperidin-3-yl)carbamate

生成物 1

HCID 86705279tert-butyl (3S,4S,5R)-1-(3-aminopyridin-4-yl)-4-cyano-5-methylpiperidin-3-ylcarbamate収率 100%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

Tert-butyl ((3S,4S,5R)-1-(3-((tert-butoxycarbonyl)amino)pyridin-4-yl)-4-cyano-5-methylpiperidin-3-yl)carbamate (1.0 equiv.) was treated with 4 M HCl in dioxane (30.0 equiv.) at rt for 1 hour. The volatiles were removed in vacuo and the solid was pumped on for 5 minutes on the high vac. To the residue was added CH2Cl2 (0.05 M), DIEA (5.0 equiv.) and Boc-OSu (1.6 equiv.). The solution was left stirring at rt for 1 hr. The volatiles were removed in vacuo and the residue was partitioned between EtOAc and H2O. The organic layer was washed with Na2CO3(sat.), NaCl(sat.), dried over MgSO4, filtered, concentrated to yield tert-butyl (3S,4S,5R)-1-(3-aminopyridin-4-yl)-4-cyano-5-methylpiperidin-3-ylcarbamate in 100% yield. LC/MS (m/z)=332.1 (MH+), Rt=0.59 min.

後処理

  1. customThe volatiles were removed in vacuo
  2. customwas pumped on for 5 minutes on the high vac
  3. waitThe solution was left
  4. customThe volatiles were removed in vacuo
  5. customthe residue was partitioned between EtOAc and H2O
  6. washThe organic layer was washed with Na2CO3(sat.), NaCl(sat.)
  7. dry with materialdried over MgSO4
  8. filtrationfiltered
  9. concentrationconcentrated

出典と根拠

ORDレコード
ord-e3a3e1f4881e41f5ae489ba921aadd36
出典データセット
uspto-grants-2015_03
特許番号
US08987457B2

関連ノート

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