1,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine) → Tert-butyl 3-(4-(5-(1-phenylcyclopropyl)-thiazolo[5,4-b]pyridin-2-yl)phenylamino)propanoate

HRID 1177572Notes

Reaction equation

CC(C)([O-])C.[Na+].I[C:8]1[CH:13]=[CH:12][C:11]([C:14]2[S:15][C:16]3[C:21]([N:22]=2)=[CH:20][CH:19]=[C:18]([C:23]2([C:26]4[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=4)[CH2:25][CH2:24]2)[N:17]=3)=[CH:10][CH:9]=1.Cl.[NH2:33][CH2:34][CH2:35][C:36]([O:38][C:39]([CH3:42])([CH3:41])[CH3:40])=[O:37].CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2>C1(C)C=CC=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.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[C:26]1([C:23]2([C:18]3[N:17]=[C:16]4[S:15][C:14]([C:11]5[CH:12]=[CH:13][C:8]([NH:33][CH2:34][CH2:35][C:36]([O:38][C:39]([CH3:42])([CH3:41])[CH3:40])=[O:37])=[CH:9][CH:10]=5)=[N:22][C:21]4=[CH:20][CH:19]=3)[CH2:25][CH2:24]2)[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1

Participants

Conditions

Temperature: 80 °C

Procedure

Sodium tert-butoxide (21 mg, 0.213 mmol) was added to a mixture of 2-(4-iodophenyl)-5-(1-phenylcyclopropyl)thiazolo[5,4-b]pyridine (40.4 mg, 0.089 mmol), tert-butyl 3-aminopropanoate hydrochloride (19 mg, 0.107 mmol), Pd2(dba)3 (2.0 mg, 2.2 μmol), and Xantphos (5.1 mg, 8.9 μmol) in toluene (1.0 mL), and the resulting mixutre was heated under argon at 80° C. for 15 h. The reaction mixture was then cooled to 25° C. and concentrated onto silica gel. Chromatographic purificaiton (silica gel, 0-50% EtOAc/hexanes) furnished tert-butyl 3-(4-(5-(1-phenylcyclopropyl)-thiazolo[5,4-b]pyridin-2-yl)phenylamino)propanoate as a yellow oil. MS (ESI) m/z: Calculated: 471.2; Observed: 472.1 (M++1).

Workup

temperatureThe reaction mixture was then cooled to 25° C.
concentrationconcentrated onto silica gel

Sources & evidence

ORD record: ord-52e6a33dc9f74fed85bd4fd23aca82cf
Source dataset: uspto-grants-2010_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07842685B2

Reaction notes

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