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Cesium carbonate → 4-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2H-benzo[b][1,4]oxazin-3(4H)-one

HRID 2202658
Notes
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Reaction equation

HRID 2202658 reaction equation
[CH2:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH2:4][CH2:3][N:2]1[CH2:11][CH:12]([OH:26])[CH2:13][NH:14][C:15](=[O:25])[CH2:16][O:17][C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=1I.C([O-])([O-])=O.[Cs+].[Cs+].C1C=CC(P(C2C(C3C(P(C4C=CC=CC=4)C4C=CC=CC=4)=CC=C4C=3C=CC=C4)=C3C(C=CC=C3)=CC=2)C2C=CC=CC=2)=CC=1>O1CCOCC1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[CH2:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH2:4][CH2:3][N:2]1[CH2:11][CH:12]([OH:26])[CH2:13][N:14]1[C:15](=[O:25])[CH2:16][O:17][C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][C:19]1=2
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 634876Binap, (A+-)-HCID 86728093N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-(2-iodophenoxy)acetamide

Product 1

HCID 766848304-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2H-benzo[b][1,4]oxazin-3(4H)-oneYield 32.5%

Reagents, catalysts & solvents 2

HCID 9811564
Bis(dibenzylideneacetone)palladium
Catalyst
HCID 312751,4-DioxaneSolvent

Conditions

Temperature
120 °C

Procedure

To a solution of N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-(2-iodophenoxy)acetamide (100 mg, 0.215 mmol) in dioxane (5 mL) was added Cs2CO3 (139 mg, 0.429 mmol), BINAP (13.3 mg, 0.0215 mmol) and Pd2(dba)3 (8.0 mg, 0.0215 mmol). The reaction mixture was heated at 120° C. for 16 h, cooled to room temperature, filtered, and concentrated. The crude produce was purified by preparative HPLC purification. (23.6 mg, yield 32.5%) MS (ESI+) e/z: 339.2 [M+1]+. 1H NMR (MeOD, 400 MHz), δ ppm: 7.41-7.32 (m, 1H), 7.15-7.06 (m, 3H), 7.06-6.94 (m, 4H), 4.67-4.50 (m, 2H), 4.29-4.13 (m, 2H), 4.07-3.94 (m, 1H), 3.77-3.64 (m, 2H), 2.95-2.83 (m, 3H), 2.83-2.76 (m, 1H), 2.73-2.62 (m, 2H).

Workup

  1. temperaturecooled to room temperature
  2. filtrationfiltered
  3. concentrationconcentrated
  4. customThe crude produce
  5. customwas purified by preparative HPLC purification

Sources & evidence

ORD record
ord-9bd096686a3e4d7695ce07bb57e6437c
Source dataset
uspto-grants-2016_06
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09365555B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes