Hydrochloric Acid → 2-[2-(4-Hydroxy-4-phenylpiperidino)ethyl]-1,4-benzodioxan hydrochloride

HRID 2419106

反応式

HRID 2419106 の反応式
O1C2C=CC=CC=2OCC1CC=O.OC1(C2C=CC=CC=2)CCNCC1.[ClH:27].[OH:28][C:29]1([C:47]2[CH:52]=[CH:51][CH:50]=[CH:49][CH:48]=2)[CH2:34][CH2:33][N:32]([CH:35]=[CH:36][CH:37]2[O:42][C:41]3[CH:43]=[CH:44][CH:45]=[CH:46][C:40]=3[O:39][CH2:38]2)[CH2:31][CH2:30]1.C([BH3-])#N.[Na+].[OH-].[Na+]>CO>[ClH:27].[OH:28][C:29]1([C:47]2[CH:52]=[CH:51][CH:50]=[CH:49][CH:48]=2)[CH2:30][CH2:31][N:32]([CH2:35][CH2:36][CH:37]2[O:42][C:41]3[CH:43]=[CH:44][CH:45]=[CH:46][C:40]=3[O:39][CH2:38]2)[CH2:33][CH2:34]1

参加物

8

反応物 6

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 963874-Phenylpiperidin-4-olHCID 5003444Sodium cyanoborohydrideHCID 21331989(2,3-Dihydro-1,4-benzodioxin-2-yl)acetaldehydeHCID 539274311-[2-(2,3-Dihydro-1,4-benzodioxin-2-yl)ethenyl]-4-phenylpiperidin-4-ol

生成物 1

HCID 213320052-[2-(4-Hydroxy-4-phenylpiperidino)ethyl]-1,4-benzodioxan hydrochloride

試薬・触媒・溶媒 1

HCID 887Methanol溶媒2 回

実験手順

To the solution of 10 g of 1,4-benzodioxan-2-yl-acetaldehyde and 12.7 g of 4-hydroxy-4-phenylpiperidine in 300 ml of methanol is added 8 ml of 4.5 N ethanolic hydrogen chloride at which conditions the 2-[2-(4-hydroxy-4-phenylpiperidino)-vinyl]-1,4-benzodioxan is formed in situ. After standing for one hour, at room temperature the solution of 2.4 g of sodium cyanoborohydride in 30 ml of methanol is added dropwise while stirring. After one hour the solution is made strongly basic with aqueous sodium hydroxide, concentrated to a small volume and diluted with water. The mixture is extracted with ethyl acetate, the extract dried and evaporated. The residue is treated with ethanolic hydrogen chloride and the precipitate recrystallized from ethanol-diethyl ether, to yield the 2-[2-(4-hydroxy-4-phenylpiperidino)-ethyl]-1,4-benzodioxan hydrochloride melting at 203°.

後処理

  1. customis formed in situ
  2. concentrationconcentrated to a small volume
  3. additiondiluted with water
  4. extractionThe mixture is extracted with ethyl acetate
  5. customthe extract dried
  6. customevaporated
  7. additionThe residue is treated with ethanolic hydrogen chloride
  8. customthe precipitate recrystallized from ethanol-diethyl ether

出典と根拠

ORDレコード
ord-e1598701bc0e4a0cbf8a6e3fb12da3dd
出典データセット
uspto-grants-1978_08
特許番号
US04104396

関連ノート

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