Dimethylformamide → 7-[3-(Quinolin-2-ylmethoxy)-benzyloxy]-2-(1H-tetrazol-5-yl)-chromen-4-one

HRID 1090777Notes

Reaction equation

[C:1]([C:3]1[O:4][C:5]2[CH:13]=[C:12]([O:14][CH2:15][C:16]3[CH:21]=[CH:20][CH:19]=[C:18]([O:22][CH2:23][C:24]4[CH:33]=[CH:32][C:31]5[C:26](=[CH:27][CH:28]=[CH:29][CH:30]=5)[N:25]=4)[CH:17]=3)[CH:11]=[CH:10][C:6]=2[C:7](=[O:9])[CH:8]=1)#[N:2].[N-:34]=[N+:35]=[N-:36].[Na+].Cl.N1C=CC=CC=1.CN(C)C=O>O>[N:25]1[C:26]2[C:31](=[CH:30][CH:29]=[CH:28][CH:27]=2)[CH:32]=[CH:33][C:24]=1[CH2:23][O:22][C:18]1[CH:17]=[C:16]([CH:21]=[CH:20][CH:19]=1)[CH2:15][O:14][C:12]1[CH:11]=[CH:10][C:6]2[C:7](=[O:9])[CH:8]=[C:3]([C:1]3[NH:36][N:35]=[N:34][N:2]=3)[O:4][C:5]=2[CH:13]=1

Participants

Conditions

Temperature: 100 °C

Procedure

2-cyano-7-(3-(quinolin-2-ylmethoxy)benzyloxy)-4-oxo-4H-1-benzopyran (2.97 mmoles), sodium azide (965 mg), pyridine hydrochloride (1.72g) and dimethylformamide (7 ml) are combined and heated at 100° C. for 48 hours. The reaction mixture is poured into cold water and the resulting precipitate is collected. The precipitate is dissolved in hot ethanol and reprecipitated by addition of water to give 5-(7-(3-(quinolin-2-ylmethoxy)benzyloxy)-4-oxo-4H-1-benzopyran-2-yl)tetrazole which decomposes at 203° C.

Workup

customthe resulting precipitate is collected
dissolutionThe precipitate is dissolved in hot ethanol
customreprecipitated by addition of water

Sources & evidence

ORD record: ord-aecca7751ee947558a719fd9f6d9ed46
Source dataset: uspto-grants-1992_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05082849

Reaction notes

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