2-(Bromomethyl)-5-(trifluoromethyl)furan → 1'-[2-(2-oxo-1,3-oxazolidin-3-yl)ethyl]-5,6-dihydrospiro[benzo[1,2-b:5,4-b']difuran-3,3'-indol]-2'(1'H)-one

HRID 1965622Notes

Reaction equation

HRID 1965622 reaction equation
[NH:1]1[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[C:3]2([CH2:13][O:12][C:11]3[CH:14]=[C:15]4[C:19](=[CH:20][C:10]2=3)[CH2:18][CH2:17][O:16]4)[C:2]1=[O:21].CC1C2C=C3C4(C5C(=CC=CC=5)NC4=O)COC3=CC=2ON=1.CC1C=CC(S(O[CH2:55][CH2:56][N:57]2[CH2:61][CH2:60][O:59][C:58]2=[O:62])(=O)=O)=CC=1.BrCC1OC(C(F)(F)F)=CC=1>>[O:62]=[C:58]1[N:57]([CH2:56][CH2:55][N:1]2[C:9]3[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=3)[C:3]3([CH2:13][O:12][C:11]4[CH:14]=[C:15]5[C:19](=[CH:20][C:10]3=4)[CH2:18][CH2:17][O:16]5)[C:2]2=[O:21])[CH2:61][CH2:60][O:59]1

Participants

5

Reactant 4

HCID 27946052-(Bromomethyl)-5-(trifluoromethyl)furanHCID 157609472-(2-Oxooxazolidin-3-yl)ethyl 4-methylbenzenesulfonateHCID 592633545,6-dihydro-2H-spiro[benzofuro[6,5-b]furan-3,3'-indolin]-2'-oneHCID 593524533-methylspiro[furo[3,2-f][1,2]benzisoxazole-5,3'-indol]-2'(1H)-one

Product 1

HCID 593524071'-[2-(2-oxo-1,3-oxazolidin-3-yl)ethyl]-5,6-dihydrospiro[benzo[1,2-b:5,4-b']difuran-3,3'-indol]-2'(1'H)-one

Procedure

Following the procedure described in EXAMPLE 9 and making non-critical variations using 5,6-dihydrospiro[benzo[1,2-b:5,4-b′]difuran-3,3′-indol]-2′(1′H)-one to replace 3-methylspiro[furo[3,2-f][1,2]benzisoxazole-5,3′-indol]-2′(1H)-one, and 2-(2-oxooxazolidin-3-yl)ethyl 4-methylbenzenesulfonate to replace 2-(bromomethyl)-5-(trifluoromethyl)furan, 1′-[2-(2-oxo-1,3-oxazolidin-3-yl)ethyl]-5,6-dihydrospiro[benzo[1,2-b:5,4-b′]difuran-3,3′-indol]-2′(1′H)-one was obtained (46%) as a colorless solid: mp 185-186° C.; 1H NMR (300 MHz, CDCl3) δ7.33 (dd, J=7.8, 7.8 Hz, 1H), 7.18 (d, J=7.3 Hz, 1H), 7.08 (dd, J=7.3, 7.3 Hz, 1H), 6.99 (d, J=7.8 Hz, 1H), 6.50 (s, 1H), 6.40 (s, 1H), 4.78 (ABq, 2H), 4.53 (t, J=8.6 Hz, 2H), 4.33-4.22 (m, 1H), 4.21-4.00 (m, 2H), 3.93-3.58 (m, 4H), 3.57-3.43 (m, 1H), 3.05-2.91 (m, 2H); 13C NMR (75 MHz, CDCl3) δ 178.8, 161.8, 161.3, 158.7, 141.7, 132.4, 129.0, 124.1, 123.7, 120.0, 119.0, 108.3, 93.2, 80.5, 72.5, 62.1, 57.7, 44.3, 41.7, 37.3, 29.0; MS (ES+) m/z 393.3 (M+1).

Sources & evidence

ORD record
ord-9942cc7558f44998907204593ca32ec0
Source dataset
uspto-grants-2013_04
Patent number
US08415370B2

Reaction notes

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