Sodium Azide → ethyl 7-(azidomethyl)-6-chloro-2-(trifluoromethyl)-2H-chromene-3-carboxylate

HRID 854892Notes

Reaction equation

Br[CH2:2][C:3]1[CH:12]=[C:11]2[C:6]([CH:7]=[C:8]([C:17]([O:19][CH2:20][CH3:21])=[O:18])[CH:9]([C:13]([F:16])([F:15])[F:14])[O:10]2)=[CH:5][C:4]=1[Cl:22].[N-:23]=[N+:24]=[N-:25].[Na+]>CN(C=O)C>[N:23]([CH2:2][C:3]1[CH:12]=[C:11]2[C:6]([CH:7]=[C:8]([C:17]([O:19][CH2:20][CH3:21])=[O:18])[CH:9]([C:13]([F:16])([F:15])[F:14])[O:10]2)=[CH:5][C:4]=1[Cl:22])=[N+:24]=[N-:25]

Participants

Conditions

Temperature: 50 °C

Procedure

The ester from step 3 (2.2 g, 5.5 mmole) and sodium azide (1.79 g, 27.5 mmole) were dissolved in DMF (15 mL). The mixture was heated at 50° C. under nitrogen for overnight. The solid was filtered off and washed with EtOAc. The organic layer was washed with water and dried over MgSO4. After concentrated the ester was of suitable purity to use without further purification.

Workup

filtrationThe solid was filtered off
washwashed with EtOAc
washThe organic layer was washed with water
dry with materialdried over MgSO4
concentrationAfter concentrated the ester
customto use without further purification

Sources & evidence

ORD record: ord-68abea5559674609b1cc094c96b3f093
Source dataset: uspto-grants-2007_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07259266B2

Reaction notes

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