Potassium Cyanide → methyl (S)-10,11,12,12a-tetrahydro-8-oxo-8H-imidazo[5,1-c]pyrrolo[1,2-a]thieno[3,2-e][1,4]diazepine-1-carboxylate

HRID 2198732Notes

Reaction equation

HRID 2198732 reaction equation
[O:1]=[C:2]1[N:8]2[CH2:9][CH2:10][CH2:11][C@H:7]2[C:6]2=[C:12]([C:15]([O:17][CH2:18]C)=[O:16])[N:13]=[CH:14][N:5]2[C:4]2[CH:20]=[CH:21][S:22][C:3]1=2.[C-]#N.[K+]>CO>[O:1]=[C:2]1[N:8]2[CH2:9][CH2:10][CH2:11][C@H:7]2[C:6]2=[C:12]([C:15]([O:17][CH3:18])=[O:16])[N:13]=[CH:14][N:5]2[C:4]2[CH:20]=[CH:21][S:22][C:3]1=2

Participants

4

Reactant 2

HCID 9032Potassium CyanideHCID 13688160ethyl (S)-10,11,12,12a-tetrahydro-8-oxo-8H-imidazo[5,1-c]pyrrolo[1,2-a]thieno[3,2-e][1,4]diazepine-1-carboxylate

Product 1

HCID 53873192methyl (S)-10,11,12,12a-tetrahydro-8-oxo-8H-imidazo[5,1-c]pyrrolo[1,2-a]thieno[3,2-e][1,4]diazepine-1-carboxylate

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

1.50 g of ethyl (S)-10,11,12,12a-tetrahydro-8-oxo-8H-imidazo[5,1-c]pyrrolo[1,2-a]thieno[3,2-e][1,4]diazepine-1-carboxylate are stirred at 50° C. for 20 hours together with 100 g of powdered potassium cyanide in 10 ml of methanol. The solution is concentrated and the residue is taken up in chloroform. The insoluble material is filtered off under suction and the filtrate is evaporated. After recrystallisation of the residue from chloroform/hexane, there is obtained methyl (S)-10,11,12,12a-tetrahydro-8-oxo-8H-imidazo[5,1-c]pyrrolo[1,2-a]thieno[3,2-e][1,4]diazepine-1-carboxylate of melting point 192°-193° C.

Workup

  1. concentrationThe solution is concentrated
  2. filtrationThe insoluble material is filtered off under suction
  3. customthe filtrate is evaporated
  4. customAfter recrystallisation of the residue from chloroform/hexane

Sources & evidence

ORD record
ord-184adeea17f049058625c25a839e7018
Source dataset
uspto-grants-1982_11
Patent number
US04359420

Reaction notes

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