Acetic Acid → 2-(3-Azido-7-Fluoro-2,4-dioxo-5-pyridin-3-yl-2,3,4,5-tetrahydrobenzo[b][1,4]diazepin-1-yl)-N-isopropyl-N-(4-methoxy-phenyl)-acetamide

HRID 1599100Notes

Reaction equation

HRID 1599100 reaction equation
[F:1][C:2]1[CH:35]=[CH:34][C:5]2[N:6]([CH2:19][C:20]([N:22]([CH:31]([CH3:33])[CH3:32])[C:23]3[CH:28]=[CH:27][C:26]([O:29][CH3:30])=[CH:25][CH:24]=3)=[O:21])[C:7](=[O:18])[CH2:8][C:9](=[O:17])[N:10]([C:11]3[CH:12]=[N:13][CH:14]=[CH:15][CH:16]=3)[C:4]=2[CH:3]=1.C[Si]([N-][Si](C)(C)C)(C)C.[K+].C(C1C=C(C(C)C)C=C(C(C)C)C=1S([N:64]=[N+:65]=[N-:66])(=O)=O)(C)C.C(O)(=O)C>O1CCCC1>[N:64]([CH:8]1[C:7](=[O:18])[N:6]([CH2:19][C:20]([N:22]([CH:31]([CH3:33])[CH3:32])[C:23]2[CH:24]=[CH:25][C:26]([O:29][CH3:30])=[CH:27][CH:28]=2)=[O:21])[C:5]2[CH:34]=[CH:35][C:2]([F:1])=[CH:3][C:4]=2[N:10]([C:11]2[CH:12]=[N:13][CH:14]=[CH:15][CH:16]=2)[C:9]1=[O:17])=[N+:65]=[N-:66]

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 3717072,4,6-Triisopropylbenzenesulfonyl azideHCID 3251421Potassium bis(trimethylsilyl)amideHCID 540873952-(7-Fluoro-2,4-dioxo-5-pyridin-3-yl-2,3,4,5-tetrahydro-benzo[b][1,4]diazepin-1-yl)-N-isopropyl-N-(4-methoxy-phenyl)-acetamide

Product 1

HCID 189295762-(3-Azido-7-Fluoro-2,4-dioxo-5-pyridin-3-yl-2,3,4,5-tetrahydrobenzo[b][1,4]diazepin-1-yl)-N-isopropyl-N-(4-methoxy-phenyl)-acetamideYield 59.7%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A solution of 262 mg of 2-(7-Fluoro-2,4-dioxo-5-pyridin-3-yl-2,3,4,5-tetrahydrobenzo[b][1,4]diazepin-1-yl)-N-isopropyl-N-(4-methoxy-phenyl)-acetamide (0.550 mmol) in 5 mL of anhydrous tetrahydrofuran at -78° C. under nitrogen was treated dropwise with 1.54 mL of potassium bis(trimethylsilyl)amide (0.5M in toluene, 0.770 mmol, 1.4 eq). After stirring 15 min., 212 mg of 2,4,6-triisopropylbenzenesulfonyl azide (0.687 mmol, 1.25 eq, J. Org. Chem. 1984, 49, 1430-1434) was added. After stirring 4 min., the reaction mixture was quenched by addition of 78.6 mL of glacial acetic acid (1.38 mmol, 2.5 eq) and allowed to warm to ambient temperature. The reaction mixture was evaportated in vacuo to a residue and purified on flash grade silica with 1:1 ethyl acetate / hexane. The appropriate fractions were combined, evaporated in vacuo and dried under high vacuum to provide 170 mg of the title compound as an amorphous solid. Low resolution MS (FAB)m/e 518 (MH+); TLC (silica) 3:1 Ethyl acetate: hexane Rf=0.68.

Workup

  1. stirringAfter stirring 4 min.
  2. custompurified on flash grade silica with 1:1 ethyl acetate / hexane
  3. customevaporated in vacuo
  4. customdried under high vacuum

Sources & evidence

ORD record
ord-7524a17514cc416a8ce72d13f835c984
Source dataset
uspto-grants-1998_04
Patent number
US05739129

Reaction notes

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