Acetic Anhydride → HCID 22840849, compound

HRID 1736726Notes

Reaction equation

HRID 1736726 reaction equation
[N+:1]([C:4]1[CH:5]=[C:6]([OH:19])[CH:7]=[C:8]2[C:12]=1[N:11]([CH3:13])[C@H:10]1[N:14]([CH3:17])[CH2:15][CH2:16][C@@:9]21[CH3:18])([O-])=O.[C:20](OC(=O)C)(=[O:22])[CH3:21].[H][H]>[Pt].O1CCCC1>[C:20]([NH:1][C:4]1[CH:5]=[C:6]([OH:19])[CH:7]=[C:8]2[C:12]=1[N:11]([CH3:13])[C@H:10]1[N:14]([CH3:17])[CH2:15][CH2:16][C@@:9]21[CH3:18])(=[O:22])[CH3:21]

Participants

6

Reactant 3

HCID 7918Acetic AnhydrideHCID 14349820(3 aS-cis)-1,2,3,3a,8,8a-hexahydro-7-nitro-1,3a,8-trimethylpyrrolo[2,3-b]indol-5-olHCID 178418361HCID 178418361, compound

Product 1

HCID 22840849HCID 22840849, compound

Reagents, catalysts & solvents 2

HCID 23939PlatinumCatalystHCID 8028TetrahydrofuranSolvent

Procedure

A Parr hydrogenation bottle is charged with 3.20 g of (3aS-cis)-1,2,3,3a,8,8a-hexahydro-7-nitro-1,3a,8-trimethyl-pyrrolo[2,3-b]indol-5-ol, methyl carbamate ester, 0.3 g of 1% platinum-on-carbon catalyst, 1.53 g of acetic anhydride and 50 ml of degassed tetrahydrofuran. The mixture is shaken at room temperature under an initial hydrogen pressure of 40 psi (pounds per square inch) until uptake of hydrogen ceases. The catalyst is removed by filtration and the filtrate is concentrated in vacuo to afford 7-acetylamino-(3aS-cis)-1,2,3,3a,8,8a-hexahydro-1,3a,8-trimethylpyrrolo[2,3-b]indol-5-ol, methyl carbamate ester.

Workup

  1. customThe catalyst is removed by filtration
  2. concentrationthe filtrate is concentrated in vacuo

Sources & evidence

ORD record
ord-777bba148fdf443bab7b88c1b17b1ecf
Source dataset
uspto-grants-1996_07
Patent number
US05541340

Reaction notes

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