Ethyl bromoacetate → ethyl (2'-oxo-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3'-indol]-1'(2'H)-yl)acetate

HRID 2385387Notes

Reaction equation

HRID 2385387 reaction equation
Br[CH2:2][C:3]([O:5][CH2:6][CH3:7])=[O:4].BrCC1OC(C(F)(F)F)=CC=1.[NH:19]1[C:27]2[C:22](=[CH:23][CH:24]=[CH:25][CH:26]=2)[C:21]2([C:39]3[C:30](=[CH:31][C:32]4[O:37][CH2:36][CH2:35][O:34][C:33]=4[CH:38]=3)[O:29][CH2:28]2)[C:20]1=[O:40].CC1C2C=C3C4(C5C(=CC=CC=5)NC4=O)COC3=CC=2ON=1>>[O:40]=[C:20]1[C:21]2([C:39]3[C:30](=[CH:31][C:32]4[O:37][CH2:36][CH2:35][O:34][C:33]=4[CH:38]=3)[O:29][CH2:28]2)[C:22]2[C:27](=[CH:26][CH:25]=[CH:24][CH:23]=2)[N:19]1[CH2:2][C:3]([O:5][CH2:6][CH3:7])=[O:4]

Participants

5

Reactant 4

HCID 7748Ethyl bromoacetateHCID 27946052-(Bromomethyl)-5-(trifluoromethyl)furanHCID 58224164Spiro[furo[2,3-g]-1,4-benzodioxin-8(7H),3'-[3H]indol]-2'(1'H)-one, 2,3-dihydroHCID 593524533-methylspiro[furo[3,2-f][1,2]benzisoxazole-5,3'-indol]-2'(1H)-one

Product 1

HCID 59352376ethyl (2'-oxo-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3'-indol]-1'(2'H)-yl)acetate

Procedure

Following the procedure as described in EXAMPLE 9 and making non-critical variations using ethyl bromoacetate to replace 2-(bromomethyl)-5-(trifluoromethyl)furan, and 2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3′-indol]-2′(1′H)-one to replace 3-methylspiro[furo[3,2-f][1,2]benzisoxazole-5,3′-indol]-2′(1′H)-one, ethyl (2′-oxo-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3′-indol]-1′(2′H)-yl)acetate was obtained (90%): mp 58-59° C. (ethyl acetate/hexanes); 1H NMR (300 MHz, CDCl3) δ 7.29-7.23 (m, 1H), 7.18-7.15 (m, 1H), 7.08-7.02 (m, 1H), 6.77-6.74 (m, 1H), 6.47 (s, 1H), 6.34 (s, 1H), 4.89-4.39 (m, 4H), 4.25-4.15 (m, 4H), 4.11-4.08 (m, 2H), 1.26 (t, J=9.0 Hz, 3H); MS (ES+) m/z 381.8 (M+1).

Sources & evidence

ORD record
ord-94ec4a8ba837403185c6ce444039c9fb
Source dataset
uspto-grants-2012_09
Patent number
US08263606B2

Reaction notes

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