Trifluoroacetic acid → 5-(2-aminoethyl)-1H-naphtho[1,2-b][1,4]diazepine-2,4(3H,5H)-dione

HRID 1049820Notes

Reaction equation

C(OC([NH:8][CH2:9][CH2:10][N:11]1[C:17](=[O:18])[CH2:16][C:15](=[O:19])[NH:14][C:13]2[C:20]3[C:25]([CH:26]=[CH:27][C:12]1=2)=[CH:24][CH:23]=[CH:22][CH:21]=3)=O)(C)(C)C.OC1C=CC(N2C(=O)CC(=O)NC3C4CCCCC=4C=CC2=3)=CC=1.FC(F)(F)C(O)=O.BrC1C=C(S(OC2C=CC(N3C(=O)CC(=O)NC4C5CCCCC=5C=CC3=4)=CC=2)(=O)=O)C=CC=1>C(=O)([O-])O.[Na+].ClCCl>[NH2:8][CH2:9][CH2:10][N:11]1[C:17](=[O:18])[CH2:16][C:15](=[O:19])[NH:14][C:13]2[C:20]3[C:25]([CH:26]=[CH:27][C:12]1=2)=[CH:24][CH:23]=[CH:22][CH:21]=3

Participants

Procedure

5-[2-(tert-Butoxycarbonyl)aminoethyl]-1H-naphtho[1,2-b][1,4]diazepine-2,4(3H,5H)-dione (10 mg, 0.027 mol) obtained in Example 72, (3) was treated with trifluoroacetic acid in the same manner as that of Example 72, (4) to give a solution of 5-(2-aminoethyl)-1H-naphtho[1,2-b][1,4]diazepine-2,4(3H,5H)-dione in saturated aqueous sodium hydrogencarbonate and dichloromethane. This solution was added with 2-chlorobenzylsulfonyl chloride (7 mg, 0.03 mol) with stirring under ice cooling, and the mixture was stirred for 1 hour under ice cooling, and then at room temperature for 2 hours. This reaction mixture was added with water, and the dichloromethane layer was washed with saturated brine, and dried over anhydrous sodium sulfate. The solvent was evaporated, and the residue was recrystallized from ethyl acetate/hexane to obtain the title compound (7 mg, yield 56%) as pale brown crystals.

Sources & evidence

ORD record: ord-e49bfb993ddc4e218d089c3fb8d380fb
Source dataset: uspto-grants-2016_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09382236B2

Reaction notes

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Reaction equation

Participants

Reactant 4

Product 1

Reagents, catalysts & solvents 2

Procedure

Sources & evidence

Reaction notes