N-methyl-2-pyrrolidone → 4-[1-(9-hydroxy-2-isopropyl-1,8-dioxo-1,3,4,8-tetrahydro-2H-pyrazino[1,2-c]pyrimidin-6-ylmethyl)-cyclopentyl]-benzonitrile

HRID 2169277ノート

反応式

HRID 2169277 の反応式
C([O:8][C:9]1[C:14](=[O:15])[N:13]=[C:12]([CH2:16][C:17]2([C:22]3[CH:27]=[CH:26][C:25](Br)=[CH:24][CH:23]=3)[CH2:21][CH2:20][CH2:19][CH2:18]2)[N:11]2[CH2:29][CH2:30][N:31]([CH:34]([CH3:36])[CH3:35])[C:32](=[O:33])[C:10]=12)C1C=CC=CC=1.[CH3:37][N:38]1CCCC1=O>O.[Zn].C1(P(C2C=CC=CC=2)[C-]2C=CC=C2)C=CC=CC=1.[C-]1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=C1.[Fe+2].[C-]#N.[C-]#N.[Zn+2].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]>[OH:8][C:9]1[C:14](=[O:15])[N:13]=[C:12]([CH2:16][C:17]2([C:22]3[CH:27]=[CH:26][C:25]([C:37]#[N:38])=[CH:24][CH:23]=3)[CH2:18][CH2:19][CH2:20][CH2:21]2)[N:11]2[CH2:29][CH2:30][N:31]([CH:34]([CH3:36])[CH3:35])[C:32](=[O:33])[C:10]=12

参加物

8

反応物 2

HCID 13387N-methyl-2-pyrrolidoneHCID 867259269-benzyloxy-6-[1-(4-bromophenyl)-cyclopentylmethyl]-2-isopropyl-3,4-dihydro-2H-pyrazino[1,2-c]pyrimidine-1,8-dione

生成物 1

HCID 867259274-[1-(9-hydroxy-2-isopropyl-1,8-dioxo-1,3,4,8-tetrahydro-2H-pyrazino[1,2-c]pyrimidin-6-ylmethyl)-cyclopentyl]-benzonitrile収率 55.53%

試薬・触媒・溶媒 5

HCID 11186Zinc cyanide (Zn(CN)2)触媒HCID 23994Zinc触媒HCID 635956Ferrocene-1,1'-bis-(diphenylphosphine)触媒HCID 9811564Bis(dibenzylideneacetone)palladium触媒HCID 962Water溶媒

反応条件

温度
120 °C

実験手順

A stirred solution of 9-benzyloxy-6-[1-(4-bromophenyl)-cyclopentylmethyl]-2-isopropyl-3,4-dihydro-2H-pyrazino[1,2-c]pyrimidine-1,8-dione (234) (100 mg, 0.182 mmol) in N-Methyl-2-pyrrolidon (1 mL) in a sealed tube was purged with argon for 10 min. To this solution, Zn (1.188 mg, 0.018 mmol), 1,1′-bis(diphenylphosphino)ferrocen (3.021 mg, 0.0050 mmol), Zn(CN)2 (17.067 mg, 0.145 mmol) and Pd2(dba)3 (3.327 mg, 0.0040 mmol) were added and the reaction mixture was heated at 120° C. for 16 h. After completion of the reaction, the reaction mixture was diluted with water and extracted with ethyl acetate, washed with water, followed by brine, separated, dried over sodium sulfate and evaporated to get a crude product which was purified by normal silica column using 10% methanol in dichloromethane containing 10% ammonia to get 4-[1-(9-hydroxy-2-isopropyl-1,8-dioxo-1,3,4,8-tetrahydro-2H-pyrazino[1,2-c]pyrimidin-6-ylmethyl)-cyclopentyl]-benzonitrile (235) (41 mg, 55.53%) as an off-white solid.

後処理

  1. customAfter completion of the reaction
  2. extractionextracted with ethyl acetate
  3. washwashed with water
  4. customseparated
  5. dry with materialdried over sodium sulfate
  6. customevaporated
  7. customto get a crude product which
  8. customwas purified by normal silica column

出典と根拠

ORDレコード
ord-9ff16992b6aa4593a16979b4cdc9d54a
出典データセット
uspto-grants-2015_06
特許番号
US09045486B2

反応ノート

読み込み中…