Triphenylphosphine → 7-methoxy-5-(N-methylpiperidin-4-yloxy)-3-pivaloyloxymethyl-3,4-dihydroquinazolin-4-one

HRID 641717

反応式

HRID 641717 の反応式
N(C(OC(C)(C)C)=O)=NC([O-])=O.[OH:13][C:14]1[CH:23]=[C:22]([O:24][CH3:25])[CH:21]=[C:20]2[C:15]=1[C:16](=[O:34])[N:17]([CH2:26][O:27][C:28](=[O:33])[C:29]([CH3:32])([CH3:31])[CH3:30])[CH:18]=[N:19]2.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.O[CH:55]1[CH2:60][CH2:59][N:58]([CH3:61])[CH2:57][CH2:56]1>C(Cl)Cl>[CH3:25][O:24][C:22]1[CH:21]=[C:20]2[C:15]([C:16](=[O:34])[N:17]([CH2:26][O:27][C:28](=[O:33])[C:29]([CH3:31])([CH3:30])[CH3:32])[CH:18]=[N:19]2)=[C:14]([O:13][CH:55]2[CH2:60][CH2:59][N:58]([CH3:61])[CH2:57][CH2:56]2)[CH:23]=1

参加物

6

反応物 4

HCID 11776TriphenylphosphineHCID 660484-Piperidinol, 1-methyl-HCID 119745575-Hydroxy-7-methoxy-3-pivaloyloxymethyl-quinazolin-4-oneHCID 86609045Tert-butyl azodicarboxylate

生成物 1

HCID 119739027-methoxy-5-(N-methylpiperidin-4-yloxy)-3-pivaloyloxymethyl-3,4-dihydroquinazolin-4-one収率 88.6%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒2 回

反応条件

温度
5 °C

実験手順

A solution of di-(tert-butyl azodicarboxylate (1.7 g) in methylene chloride (5 ml) was added to a stirred mixture of 5-hydroxy-7-methoxy-3-pivaloyloxymethyl-3,4-dihydroquinazolin-4-one (1.5 g), triphenylphosphine (1.9 g), 4-hydroxy-1-methylpiperidine (0.675 g) and methylene chloride (20 ml) which had been cooled to 5° C. The mixture was stirred at ambient temperature for 1 hour. The mixture was evaporated and the residue was purified by column chromatography on silica using a 9:10:1 mixture of methylene chloride, ethyl acetate and a saturated methanolic ammonia solution as eluent. The material so obtained was triturated under diethyl ether. The resultant solid was washed with diethyl ether and dried under vacuum to give 7-methoxy-5-(N-methylpiperidin-4-yloxy)-3-pivaloyloxymethyl-3,4-dihydroquinazolin-4-one (1.75 g); NMR Spectrum: (CDCl3): 1.2 (s, 9H), 2.05 (br s, 41, 2.3 (s, 3H), 2.3-2.42 (m, 2H), 2.7-2.8 (m, 2H), 3.9 (s, 3H), 4.48 (m, 1H), 5.9 (s, 2H), 6.5 (d, 1H), 6.71 (d, 1H), 8.18 (s, 1H).

後処理

  1. customThe mixture was evaporated
  2. customthe residue was purified by column chromatography on silica using
  3. additiona 9:10:1 mixture of methylene chloride, ethyl acetate
  4. customThe material so obtained
  5. customwas triturated under diethyl ether
  6. washThe resultant solid was washed with diethyl ether
  7. customdried under vacuum

出典と根拠

ORDレコード
ord-4da9ba0d04a741cd85982d96f0fe79a4
出典データセット
uspto-grants-2010_04
特許番号
US07696214B2

関連ノート

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