1-(diphenylmethyl)-3-(2-hydroxy-4-methoxy-5-methylphenyl)-1,3-dihydro-2H-indol-2-one → 4-methyl-1'-[(2R)-tetrahydrofuran-2-ylmethyl]-3,4-dihydro-2H-spiro[furo[2,3-g][1,4]benzoxazine-8,3'-indol]-2'(1'H)-one

HRID 1965440Notes

Reaction equation

F[C:2](F)(F)C(O)=O.[OH:8][C:9]1[C:10]([CH:20]2[C:28]3[C:23](=[CH:24][CH:25]=[CH:26][CH:27]=3)[N:22]([CH2:29][C@H:30]3[CH2:34][CH2:33][CH2:32][O:31]3)[C:21]2=[O:35])=[CH:11][C:12]2[O:17][CH2:16][CH2:15][N:14]([CH3:18])[C:13]=2[CH:19]=1.C1(C(C2C=CC=CC=2)N2C3C(=CC=CC=3)C(C3C=C(C)C(OC)=CC=3O)C2=O)C=CC=CC=1>>[CH3:18][N:14]1[C:13]2[CH:19]=[C:9]3[O:8][CH2:2][C:20]4([C:28]5[C:23](=[CH:24][CH:25]=[CH:26][CH:27]=5)[N:22]([CH2:29][C@H:30]5[CH2:34][CH2:33][CH2:32][O:31]5)[C:21]4=[O:35])[C:10]3=[CH:11][C:12]=2[O:17][CH2:16][CH2:15]1

Participants

Reactant 2

HCID 673563761-(diphenylmethyl)-3-(2-hydroxy-4-methoxy-5-methylphenyl)-1,3-dihydro-2H-indol-2-one

HCID 685974793-(6-hydroxy-4-methyl-3,4-dihydro-2H-1,4-benzoxazin-7-yl)-1-[(2R)-tetrahydrofuran-2-ylmethyl]-1,3-dihydro-2H-indol-2-one trifluoroacetate

Product 1

HCID 593525434-methyl-1'-[(2R)-tetrahydrofuran-2-ylmethyl]-3,4-dihydro-2H-spiro[furo[2,3-g][1,4]benzoxazine-8,3'-indol]-2'(1'H)-one

Procedure

Following the procedure as described in EXAMPLE 2 and making non-critical variations using 3-(6-hydroxy-4-methyl-3,4-dihydro-2H-1,4-benzoxazin-7-yl)-1-[(2R)-tetrahydrofuran-2-ylmethyl]-1,3-dihydro-2H-indol-2-one trifluoroacetate to replace 1-(diphenylmethyl)-3-(2-hydroxy-4-methoxy-5-methylphenyl)-1,3-dihydro-2H-indol-2-one, 4-methyl-1′-[(2R)-tetrahydrofuran-2-ylmethyl]-3,4-dihydro-2H-spiro[furo[2,3-g][1,4]benzoxazine-8,3′-indol]-2′(1′H)-one was obtained (62%) as a pale yellow solid: mp 138-140° C. (diethyl ether/hexanes); 1H NMR (300 MHz, CDCl3) (diastereomers) δ 7.26 (dd, J=7.7, 7.7 Hz, 1H), 7.16-6.99 (m, 3H), 6.29 (s, 1H), 6.122, 6.117 (s, 1H), 4.86 (d, J=8.9 Hz, 1H), 4.61 (d, J=8.9 Hz, 1H), 4.31-4.21 (m, 1H), 4.13 (dd, J=4.5, 4.5 Hz, 2H), 3.99-3.66 (m, 4H), 3.23 (dd, J=4.5, 4.2 Hz, 2H), 2.87 (s, 3H), 2.07-1.83 (m, 3H), 1.81-1.67 (m, 1H); 13C NMR (75 MHz, CDCl3) (diastereomers) δ178.5, 178.3, 156.1, 143.1, 142.9, 139.0, 137.8, 132.7, 132.6, 128.7, 128.6, 123.84, 123.76, 123.2, 116.41, 116.35, 110.26, 110.22, 109.7, 109.4, 94.4, 80.2, 80.1, 77.3, 76.8, 68.38, 68.35, 64.5, 58.3, 49.2, 44.64, 44.58, 39.0, 29.4, 29.0, 25.9, 25.7; MS (ES+) m/z 393.0 (M+1).

Sources & evidence

ORD record: ord-9cd1945b219448568c26e8a29b729fff
Source dataset: uspto-grants-2013_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08415370B2

Reaction notes

Loading…