2,2'-Bis(dicyclohexylphosphino)-1,1'-biphenyl → HCID 49838516, compound

HRID 1889857Notes

Reaction equation

HRID 1889857 reaction equation
[CH3:1][S:2]([C:5]1[CH:10]=[CH:9][C:8]([C:11]2[C:12]3[N:13]([N:17]=[C:18]([NH2:20])[N:19]=3)[CH:14]=[CH:15][CH:16]=2)=[CH:7][CH:6]=1)(=[O:4])=[O:3].Br[C:22]1[CH:23]=[C:24]([CH:34]=[CH:35][CH:36]=1)[CH2:25][N:26]1[CH2:31][CH2:30][S:29](=[O:33])(=[O:32])[CH2:28][CH2:27]1.C1(P(C2CCCCC2)C2C=CC=CC=2C2C=CC=CC=2P(C2CCCCC2)C2CCCCC2)CCCCC1>>[O:33]=[S:29]1(=[O:32])[CH2:30][CH2:31][N:26]([CH2:25][C:24]2[CH:23]=[C:22]([NH:20][C:18]3[N:19]=[C:12]4[C:11]([C:8]5[CH:9]=[CH:10][C:5]([S:2]([CH3:1])(=[O:3])=[O:4])=[CH:6][CH:7]=5)=[CH:16][CH:15]=[CH:14][N:13]4[N:17]=3)[CH:36]=[CH:35][CH:34]=2)[CH2:27][CH2:28]1

Participants

4

Reactant 3

HCID 249469872,2'-Bis(dicyclohexylphosphino)-1,1'-biphenylHCID 575023768-(4-Methanesulfonyl-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamineHCID 60584697HCID 60584697, compound

Product 1

HCID 49838516HCID 49838516, compound

Procedure

To a suspension of thiomorpholine 1,1-dioxide (0.72 g, 5.4 mmol) and potassium carbonate (0.74 g, 5.4 mmol) in acetone (10 mL) was added bromo-3-chloromethyl-benzene (0.62 mL, 4.9 mmol). The mixture was stirred at room temperature for 18 hours. The mixture was diluted with dichloromethane (50 mL), filtered through a plug of diatomaceous earth and evaporated to a waxy solid. The material was purified via chromatography utilizing an ISCO automated purification apparatus (24 g silica gel column 10%→100% ethyl acetate in hexane). 4-(3-Bromo-benzyl)-thiomorpholine 1,1-dioxide was isolated as a clear viscous oil that solidified to a white solid (1.0 g, 67%). 1H NMR (400 MHz, CDCl3, δ, ppm): 7.49 (s, 1H), 7.41 (ddd, J=6.9, 1.9, 1.9 Hz, 1H), 7.25-7.19 (m, 2H), 3.62 (s, 2H), 3.10-2.96 (m, 8H). MS=304, 306 (MH)+. 120b) N-{3-[(1,1-dioxidothiomorpholin-4-yl)methyl]phenyl}-8-[4-(methylsulfonyl)phenyl][1,2,4]triazolo[1,5-a]pyridin-2-amine was prepared from 8-(4-methanesulfonyl-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine (75.0 mg, 0.260 mmol) and 4-(3-bromo-benzyl)-thiomorpholine 1,1-dioxide (90.0 mg, 0.296 mmol) with 2,2′-bis-dicyclohexylphosphanyl-biphenyl (29.0 mg, 0.0530 mmol) as the ligand in a manner analogous to Example 2d. Product isolated as a pale yellow foam (0.046 g, 34%). 1H NMR (400 MHz, CDCl3, δ, ppm): 8.52 (dd, J=6.7, 1.0 Hz, 1H), 8.23 (d, J=8.H Hz, 2H), 8.09 (d, J=8.4 Hz, 2H), 7.68 (dd, J=7.4, 0.9 Hz, 1H), 7.62-7.60 (m, 1H), 7.48 (dd, J=8.1, 1.8 Hz, 1H), 7.32 (t, J=7.7 Hz, 1H), 7.05 (t, J=7.1 Hz, 1H), 6.97-6.93 (m, 2H), 3.70 (s, 2H), 3.13-3.01 (m, 11H). MS=512 (MH)+.

Sources & evidence

ORD record
ord-66afb08d3c0b44b3ae5ac6bce8d445ad
Source dataset
uspto-grants-2013_08
Patent number
US08501936B2

Reaction notes

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