Potassium Hydroxide → HCID 86642595, compound

HRID 1970109

Reaction equation

HRID 1970109 reaction equation
[Cl:1]C1C=CC2OC3C=CC=CC=3[C@H]3C(=[O:13])N(C)C[C@@H]3C=2C=1.[Cl:22][C:23]1[CH:24]=[CH:25][C:26]2[O:37][C:36]3[CH:38]=[CH:39][CH:40]=[CH:41][C:35]=3[C@@H:29]3[C:30](=[O:34])[N:31]([CH3:33])[CH2:32][C@@H:28]3[C:27]=2[CH:42]=1.[OH-].[K+]>C(O)C>[ClH:1].[Cl:22][C:23]1[CH:24]=[CH:25][C:26]2[O:37][C:36]3[CH:38]=[CH:39][CH:40]=[CH:41][C:35]=3[C@@H:29]([C:30]([OH:34])=[O:13])[C@H:28]([CH2:32][NH:31][CH3:33])[C:27]=2[CH:42]=1

Participants

5

Reactant 3

HCID 14797Potassium HydroxideHCID 56960600912356-09-3HCID 58729182(3aS,12bS)-5-chloro-2-methyl-2,3,3a,12b-tetrahydro-1H-dibenzo[2,3:6,7]oxepino[4,5-c]pyrrol-1-one

Product 1

HCID 86642595HCID 86642595, compoundYield 22%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

The mixture of lactams (VII) and (VIII) (13.6 grams, 45 mmol, trans/cis ratio 1:2.3), obtained as described under E, was dissolved in ethanol (140 ml). To the solution potassium hydroxide was added (43 grams, 811 mmol), whereupon the mixture was heated to reflux for 18 hours. Part of the ethanol (60 ml) was evaporated and water was added (200 mL). The aqueous phase was extracted twice with toluene (100 ml). Subsequently toluene (100 ml) was added to the water phase, followed by concentrated hydrochloric acid to adjust the pH to 1. During the addition of hydrochloric acid the temperature rises to 75° C. The water layer was separated and upon cooling the product crystallized. The crystals were collected by filtration and dried to provide trans-2-chloro-10,11-dihydro-11-[(methylamino)methyl]-dibenz[b,f]oxepin-10-carboxylic acid hydrochloride (II) (3.75 grams, 10.6 mmol, 22%). M.p: 203.1° C. 1H-NMR (400 MHz, MeOD): 2.6 (s, 3H), 3.3 (s, 2H), 3.9 (m, 1H), 4.4 (d, 1H), 7.10-7.36 (m, 6H).

Workup

  1. customobtained
  2. temperaturewhereupon the mixture was heated
  3. temperatureto reflux for 18 hours
  4. customPart of the ethanol (60 ml) was evaporated
  5. additionwater was added (200 mL)
  6. extractionThe aqueous phase was extracted twice with toluene (100 ml)
  7. additionSubsequently toluene (100 ml) was added to the water phase
  8. additionDuring the addition of hydrochloric acid the temperature
  9. customrises to 75° C
  10. customThe water layer was separated
  11. temperatureupon cooling the product
  12. customcrystallized
  13. filtrationThe crystals were collected by filtration
  14. customdried

Sources & evidence

ORD record
ord-93c4a963f4cb44489f93ccee28df8973
Source dataset
uspto-grants-2013_04
Patent number
US08426610B2

Linked notes

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