Sodium triacetoxyborohydride → (9-(2-(4-(2-Hydroxyethyl)phenoxy)ethyl)-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)(2-methylthiazol-4-yl)methanone

HRID 470959ノート

反応式

HRID 470959 の反応式
Cl.[CH3:2][C:3]1[S:4][CH:5]=[C:6]([C:8]([N:10]2[CH2:15][C:14]3([CH2:20][CH2:19][NH:18][CH2:17][CH2:16]3)[O:13][CH2:12][CH2:11]2)=[O:9])[N:7]=1.[OH:21][CH2:22][CH2:23][C:24]1[CH:33]=[CH:32][C:27]([O:28][CH2:29][CH:30]=O)=[CH:26][CH:25]=1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>CN1C(=O)CCC1.C(O)(=O)C.CO>[OH:21][CH2:22][CH2:23][C:24]1[CH:33]=[CH:32][C:27]([O:28][CH2:29][CH2:30][N:18]2[CH2:19][CH2:20][C:14]3([O:13][CH2:12][CH2:11][N:10]([C:8]([C:6]4[N:7]=[C:3]([CH3:2])[S:4][CH:5]=4)=[O:9])[CH2:15]3)[CH2:16][CH2:17]2)=[CH:26][CH:25]=1

参加物

7

反応物 3

HCID 5049666Sodium triacetoxyborohydrideHCID 545162782-(4-(2-Hydroxyethyl)phenoxy)acetaldehydeHCID 67291637(2-Methylthiazol-4-yl)(1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)methanone hydrochloride

生成物 1

HCID 57988908(9-(2-(4-(2-Hydroxyethyl)phenoxy)ethyl)-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)(2-methylthiazol-4-yl)methanone

試薬・触媒・溶媒 3

HCID 176Acetic Acid溶媒HCID 887Methanol溶媒2 回HCID 13387N-methyl-2-pyrrolidone溶媒

実験手順

(2-Methylthiazol-4-yl)(1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)methanone hydrochloride (example 1, step f) (0.63 g) was added to a solution of 2-(4-(2-hydroxyethyl)phenoxy)acetaldehyde (example 3, step b) (0.541 g) in a mixture of NMP (10 mL) and acetic acid (0.11 mL). The resulting mixture was stirred at room temperature for 30 min then cooled in an ice bath. Sodium triacetoxyborohydride (0.64 g) was then added and the reaction was allowed to warm to room temperature and stirred for 16 h. The reaction was diluted with methanol (30 mL) and applied to a SCX cartridge pre-wetted with methanol. The cartridge was washed with methanol (100 mL) and eluted with 3M ammonia in methanol solution (100 mL). The eluent was evaporated in vacuo and the residue purified by silica gel chromatography, eluting with 95:5 ethyl acetate:triethylamine to give the subtitled compound as a brown oil. Yield 0.74 g.

後処理

  1. temperaturethen cooled in an ice bath
  2. temperatureto warm to room temperature
  3. stirringstirred for 16 h
  4. washThe cartridge was washed with methanol (100 mL)
  5. washeluted with 3M ammonia in methanol solution (100 mL)
  6. customThe eluent was evaporated in vacuo
  7. customthe residue purified by silica gel chromatography
  8. washeluting with 95:5 ethyl acetate

出典と根拠

ORDレコード
ord-2c72e0eddecb409aaa4cf716db68011f
出典データセット
uspto-grants-2014_01
特許番号
US08629271B2

反応ノート

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