Cesium carbonate → ethyl {(1S)-5-[3-(4-cyano-2-propylphenoxy)propoxy]-2,3-dihydro-1H-inden-1-yl}acetate

HRID 2235887Notes

Reaction equation

[OH:1][C:2]1[CH:9]=[CH:8][C:5]([C:6]#[N:7])=[CH:4][C:3]=1[CH2:10][CH2:11][CH3:12].[CH2:13]([O:15][C:16](=[O:32])[CH2:17][C@H:18]1[C:26]2[C:21](=[CH:22][C:23]([O:27][CH2:28][CH2:29][CH2:30]Br)=[CH:24][CH:25]=2)[CH2:20][CH2:19]1)[CH3:14].C([O-])([O-])=O.[Cs+].[Cs+]>CN(C=O)C.O>[C:6]([C:5]1[CH:8]=[CH:9][C:2]([O:1][CH2:30][CH2:29][CH2:28][O:27][C:23]2[CH:22]=[C:21]3[C:26](=[CH:25][CH:24]=2)[C@H:18]([CH2:17][C:16]([O:15][CH2:13][CH3:14])=[O:32])[CH2:19][CH2:20]3)=[C:3]([CH2:10][CH2:11][CH3:12])[CH:4]=1)#[N:7]

Participants

Conditions

Temperature: 40 °C

Procedure

To a mixture of 4-hydroxy-3-propylbenzonitrile (Example 29, 0.5 g, 3.1 mmol), ethyl [(1S-5-(3-bromopropoxy)-2,3-dihydro-1H-inden-1-yl]acetate (Example 45, 1.1 g, 3.1 mmol) and Cs2CO3 (1.2 g, 3.7 mmol) in DMF (10 mL) was added water (6 drops). The reaction mixture was stirred at 40° C. for 16 h and then concentrated under reduced pressure. The residue was taken up in water and extracted with EtOAc (2×). The combined organic phases were dried over MgSO4, filtered, and concentrated under reduced pressure. Purification by silica gel flash chromatography (EtOAc/Hexane (v/v) 1:20) gave 0.86 g (66%) of the title compound as a light yellow oil. LC-MS: RT=4.12 min; (M+H)+ 422.0.

Workup

concentrationconcentrated under reduced pressure
extractionextracted with EtOAc (2×)
dry with materialThe combined organic phases were dried over MgSO4
filtrationfiltered
concentrationconcentrated under reduced pressure
customPurification by silica gel flash chromatography (EtOAc/Hexane (v/v) 1:20)

Sources & evidence

ORD record: ord-683526fb42e84ce4bdcbefb2a3378f74
Source dataset: uspto-grants-2010_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07714004B2

Reaction notes

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