(3aR*,10aS*)-9-[4-(benzyloxycarbonylamino)benzyl]-4-(phthalimidoacetyl)-2,3,3a,4,9,10a-hexahydrobenzo[b]cyclopenta[e][1,4]diazepin-10(1H)-one → (3aR*,10aS*)-9-(4-Aminobenzyl)-4-(phthalimidoacetyl)-2,3,3a,4,9,10a-hexahydrobenzo[b]cyclopenta[e]-[1,4]diazepin-10(1H)-one hydrobromide

HRID 361571Notes

Reaction equation

HRID 361571 reaction equation
C(OC([NH:11][C:12]1[CH:47]=[CH:46][C:15]([CH2:16][N:17]2[C:23](=[O:24])[C@H:22]3[CH2:25][CH2:26][CH2:27][C@H:21]3[N:20]([C:28](=[O:41])[CH2:29][N:30]3[C:34](=[O:35])[C:33]4=[CH:36][CH:37]=[CH:38][CH:39]=[C:32]4[C:31]3=[O:40])[C:19]3[CH:42]=[CH:43][CH:44]=[CH:45][C:18]2=3)=[CH:14][CH:13]=1)=O)C1C=CC=CC=1.[BrH:48].C(O)(=O)C>C(Cl)(Cl)Cl>[BrH:48].[NH2:11][C:12]1[CH:13]=[CH:14][C:15]([CH2:16][N:17]2[C:23](=[O:24])[C@H:22]3[CH2:25][CH2:26][CH2:27][C@H:21]3[N:20]([C:28](=[O:41])[CH2:29][N:30]3[C:31](=[O:40])[C:32]4=[CH:39][CH:38]=[CH:37][CH:36]=[C:33]4[C:34]3=[O:35])[C:19]3[CH:42]=[CH:43][CH:44]=[CH:45][C:18]2=3)=[CH:46][CH:47]=1

Participants

4

Reactant 2

HCID 15385743(3aR*,10aS*)-9-[4-(benzyloxycarbonylamino)benzyl]-4-(phthalimidoacetyl)-2,3,3a,4,9,10a-hexahydrobenzo[b]cyclopenta[e][1,4]diazepin-10(1H)-oneHCID 21893785Acetic Acid Mixture with Hydrobromic Acid

Product 1

HCID 67767990(3aR*,10aS*)-9-(4-Aminobenzyl)-4-(phthalimidoacetyl)-2,3,3a,4,9,10a-hexahydrobenzo[b]cyclopenta[e]-[1,4]diazepin-10(1H)-one hydrobromide

Reagents, catalysts & solvents 1

HCID 6212ChloroformSolvent

Procedure

To a solution of (3aR*,10aS*)-9-[4-(benzyloxycarbonylamino)benzyl]-4-(phthalimidoacetyl)-2,3,3a,4,9,10a-hexahydrobenzo[b]cyclopenta[e][1,4]diazepin-10(1H)-one (5.15 g, 8.2 mmol) in chloroform (80 mL) was added 25% hydrogen bromide/acetic acid (15 mL) and the mixture was stirred at room temperature for 45 minutes. This reaction mixture was concentrated under reduced pressure and the residue was crystallized from ethanol-diethyl ether to provide (3aR*,10aS*)-9-(4-aminobenzyl)-4-(phthalimidoacetyl)-2,3,3a,4,9,10a-hexahydrobenzo[b]cyclopenta[e][l,4]diazepin-10(1H)-one hydrobromide. This product was suspended in chloroform and treated with 0.5N-aqueous NaOH solution (40 mL). The aqueous layer was separated and the organic layer was washed with water, dried over MgSO4, filtered, and concentrated under reduced pressure. The residue was crystallized from chloroform-diethyl ether to provide 3.71 g (yield 91%) of the title compound. m.p. 286°-289° C.

Workup

  1. concentrationThis reaction mixture was concentrated under reduced pressure
  2. customthe residue was crystallized from ethanol-diethyl ether

Sources & evidence

ORD record
ord-1b897231e5e04c8387e7e634fce8a4b4
Source dataset
uspto-grants-1999_02
Patent number
US05866567

Reaction notes

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