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

HRID 2385360Notes

Reaction equation

HRID 2385360 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.Cl[CH2:45][C:46]1[CH:51]=[CH:50][N:49]=[CH:48][N:47]=1.BrCC1OC(C(F)(F)F)=CC=1>>[N:49]1[CH:50]=[CH:51][C:46]([CH2:45][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])=[N:47][CH:48]=1

Participants

5

Reactant 4

HCID 27946052-(Bromomethyl)-5-(trifluoromethyl)furanHCID 131235534-(Chloromethyl)pyrimidineHCID 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 59352627(pyrimidin-4-ylmethyl)-5,6-dihydrospiro[benzo[1,2-b:5,4-b']difuran-3,3'-indol]-2'(1'H)-one

Procedure

Following the procedure as 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′(1′H)-one, and 4-(chloromethyl)pyrimidine to replace 2-(bromomethyl)-5-(trifluoromethyl)furan, (pyrimidin-4-ylmethyl)-5,6-dihydrospiro[benzo[1,2-b:5,4-b′]difuran-3,3′-indol]-2′(1′H)-one was obtained (70%) as a colorless solid: mp 158-160° C.; 1H NMR (300 MHz, CDCl3) δ 9.16 (s, 1H), 8.68 (d, J=4.1 Hz, 1H), 7.30-7.15 (m, 3H), 7.05 (dd, J=7.5, 7.5 Hz, 1H), 6.79 (d, J=7.7 Hz, 1H), 6.55 (s, 1H), 6.39 (s, 1H), 5.04 (ABq, 2H), 4.84 (ABq, 2H), 4.51 (t, J=8.6 Hz, 2H), 3.06-2.91 (m, 2H); 13C NMR (75 MHz, CDCl3) δ 177.9, 164.1, 161.8, 161.2, 158.6, 157.3, 141.5, 132.4, 128.7, 124.0, 123.7, 119.9, 119.8, 118.9, 108.8, 93.1, 80.5, 72.3, 57.6, 44.9, 28.9; MS (ES+) m/z 372.3 (M+1).

Sources & evidence

ORD record
ord-44fb9b764077470b950fab80242bf7fc
Source dataset
uspto-grants-2012_09
Patent number
US08263606B2

Reaction notes

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