Reaktion #11210

ord-23f0286140094cc399e0b44e036c79d9

Reaktionsgleichung

COc1ccc2c(c1)c1c3c(c(-c4ccccc4Cl)cc1n2CCC(=O)NC1CC(C)(C)NC(C)(C)C1)C(=O)NC3=O
( 124 )
COc1ccc2c(c1)c1c3c(c(-c4ccccc4Cl)cc1n2CCC(=O)NC1CC(C)(C)NC(C)(C)C1)C(=O)NC3=O
3-(4-(2-Chlorophenyl)-9-methoxy-1,3-dioxo-2,3-dihydropyrrolo[3,4-c]carbazol-6 (1H)-yl)-N-(2,2,6,6-tetramethyl-4-piperidinyl)propanamide
BrB(Br)Br
BBr3
→
CC1(C)CC(NC(=O)CCn2c3ccc(O)cc3c3c4c(c(-c5ccccc5Cl)cc32)C(=O)NC4=O)CC(C)(C)N1
( 125 )
Ausbeute 47.0%
CC1(C)CC(NC(=O)CCn2c3ccc(O)cc3c3c4c(c(-c5ccccc5Cl)cc32)C(=O)NC4=O)CC(C)(C)N1
3-(4-(2-Chlorophenyl)-9-hydroxy-1,3-dioxo-2,3-dihydropyrrolo[3,4-c]carbazol-6 (1H)-yl)-N-(2,2,6,6-tetramethyl-4-piperidinyl)propanamide
Ausbeute 47.0%

Edukte

COc1ccc2c(c1)c1c3c(c(-c4ccccc4Cl)cc1n2CCC(=O)NC1CC(C)(C)NC(C)(C)C1)C(=O)NC3=O
( 124 )
COc1ccc2c(c1)c1c3c(c(-c4ccccc4Cl)cc1n2CCC(=O)NC1CC(C)(C)NC(C)(C)C1)C(=O)NC3=O
3-(4-(2-Chlorophenyl)-9-methoxy-1,3-dioxo-2,3-dihydropyrrolo[3,4-c]carbazol-6 (1H)-yl)-N-(2,2,6,6-tetramethyl-4-piperidinyl)propanamide
BrB(Br)Br
BBr3

Reagenzien

Keine

Reaktionsbedingungen

Detaillierte Bedingungen
See reaction.notes.procedure_details.

Vorschrift

Demethylation of (124) prepared as described in example 237 with BBr3 using the procedure described in example 80 except that the reaction time was 48 h gave (125) as a yellow powder (47%), mp 293–299° C. (dec). 1H NMR δ [(CD3)2SO] 11.08 (br s, 1H), 9.38 (br s, 1H), 8.72 (br, 1H), 8.37 (d, J=2.4 Hz, 1H), 7.83 (d, J=7.1 Hz, 1H), 7.75 (s, 1H), 7.60–7.44 (m, 5H), 7.14 (dd, J=8.8, 2.4 Hz, 1H), 4.70 (t, J=5.8 Hz, 2H), 3.90 (m, 1H), 2.54 (t, J=5.8 Hz, 2H), 1.45–1.31 (m, 2H), 1.30 (s, 3H), 1.29 (s, 3H), 1.25 (s, 3H), 1.22 (s, 3H), 1.09–9.93 (m, 2H). Found: C, 58.67; H, 5.37; N, 8.41. C32H33ClN4O4.1.25CH2Cl2 requires C, 58.79; H, 5.27; N, 8.25.

Quelle

DOI: 10.6084/m9.figshare.5104873.v1Patent: US07094798B1uspto-grants-2006_08