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Dimethylformamide → 1-ethyl-3,3,5-trimethyl-2,4-dioxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepine-7-carbonitrile

HRID 68942
Notes
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Reaction equation

HRID 68942 reaction equation
[CH2:1]([N:3]1[C:9](=[O:10])[C:8]([CH3:12])([CH3:11])[C:7](=[O:13])[N:6]([CH3:14])[C:5]2[CH:15]=[C:16](OS(C(F)(F)F)(=O)=O)[CH:17]=[CH:18][C:4]1=2)[CH3:2].[CH3:27][N:28](C=O)C>[C-]#N.[Zn+2].[C-]#N.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].C1(P(C2C=CC=CC=2)[C-]2C=CC=C2)C=CC=CC=1.[C-]1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=C1.[Fe+2].[Zn]>[CH2:1]([N:3]1[C:9](=[O:10])[C:8]([CH3:12])([CH3:11])[C:7](=[O:13])[N:6]([CH3:14])[C:5]2[CH:15]=[C:16]([C:27]#[N:28])[CH:17]=[CH:18][C:4]1=2)[CH3:2]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 2

HCID 6228DimethylformamideHCID 86670475Trifluoromethanesulfonic acid 1-ethyl-3,3,5-trimethyl-2,4-dioxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepine-7-yl ester

Product 1

HCID 669604771-ethyl-3,3,5-trimethyl-2,4-dioxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepine-7-carbonitrile

Reagents, catalysts & solvents 4

HCID 11186Zinc cyanide (Zn(CN)2)Catalyst
HCID 23994
Zinc
Catalyst
HCID 635956Ferrocene-1,1'-bis-(diphenylphosphine)Catalyst
HCID 9811564Bis(dibenzylideneacetone)palladiumCatalyst

Conditions

Temperature
170 °C

Procedure

Trifluoromethanesulfonic acid 1-ethyl-3,3,5-trimethyl-2,4-dioxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepine-7-yl ester (0.12 g), zinc cyanide (70 mg), tris(dibenzylideneacetone)dipalladium (7 mg), 1,1′-bis(diphenylphosphino) ferrocene (8 mg), and zinc powder (2 mg) were added to DMF (1 ml), and the mixture was heated for 20 minutes at 170° C. (microwave reactor). The reaction liquid was cooled to room temperature, and subjected to celite filtration. The filtrate was condensed under reduced pressure, and the residue was purified by silica gel column chromatography (hexane:ethyl acetate=50:50→0:100). The purified product was condensed under reduced pressure to give the title compound (77 mg) as a white solid.

Workup

  1. customThe reaction liquid
  2. temperaturewas cooled to room temperature
  3. filtrationsubjected to celite filtration
  4. customcondensed under reduced pressure
  5. customthe residue was purified by silica gel column chromatography (hexane:ethyl acetate=50:50→0:100)
  6. customcondensed under reduced pressure

Sources & evidence

ORD record
ord-f386fb789cf6422dad05a2459049de41
Source dataset
uspto-grants-2014_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08822453B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes