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

HRID 2419106

반응식

HRID 2419106 반응식
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

참가 물질

8

반응물 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

생성물 1

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

시약·촉매·용매 1

HCID 887Methanol용매2회

실험 절차

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°.

후처리

  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

출처 및 근거

ORD 기록
ord-e1598701bc0e4a0cbf8a6e3fb12da3dd
출처 데이터셋
uspto-grants-1978_08
특허 번호
US04104396

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