2-(Tributylstannyl)pyridine → 2-((S)-1-(8-Chloro-2-(pyridin-2-yl)quinolin-3-yl)ethyl)isoindoline-1,3-dione

HRID 1397690Notes

Reaction equation

HRID 1397690 reaction equation
Cl[C:2]1[C:11]([C@@H:12]([N:14]2[C:22](=[O:23])[C:21]3[C:16](=[CH:17][CH:18]=[CH:19][CH:20]=3)[C:15]2=[O:24])[CH3:13])=[CH:10][C:9]2[C:4](=[C:5]([Cl:25])[CH:6]=[CH:7][CH:8]=2)[N:3]=1.C([Sn](CCCC)(CCCC)[C:31]1[CH:36]=[CH:35][CH:34]=[CH:33][N:32]=1)CCC>O1CCOCC1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:25][C:5]1[CH:6]=[CH:7][CH:8]=[C:9]2[C:4]=1[N:3]=[C:2]([C:31]1[CH:36]=[CH:35][CH:34]=[CH:33][N:32]=1)[C:11]([C@@H:12]([N:14]1[C:22](=[O:23])[C:21]3[C:16](=[CH:17][CH:18]=[CH:19][CH:20]=3)[C:15]1=[O:24])[CH3:13])=[CH:10]2

Participants

5

Reactant 2

HCID 6077842-(Tributylstannyl)pyridineHCID 57707774(S)-2-(1-(2,8-dichloroquinolin-3-yl)ethyl)isoindoline-1,3-dione

Product 1

HCID 577078662-((S)-1-(8-Chloro-2-(pyridin-2-yl)quinolin-3-yl)ethyl)isoindoline-1,3-dioneYield 56.2%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of (S)-2-(1-(2,8-dichloroquinolin-3-yl)ethyl)isoindoline-1,3-dione (22.7 g, 61 mmol), Pd(PPh3)4 (3.53 g, 0.05 eq) and 2-(tributylstannyl)pyridine (33.8 g, 80%, 1.2 eq) in dioxane (840 mL) was heated to 100° C. under N2. After over night, LCSM showed around 50% starting material left. The reaction mixture was heated to 110° C. for additional 2 days. LCMS showed less than 10% starting material left. The reaction was heated to 120° C. for 5 h before cool to rt. Removal of solvent followed with column chromatography on silica gel (EtOAc/hexane, 0/1 to 1/3) gave an off white foam 14.2 g and the impure portions were combined and purified in the similar manner to give a white foam. 1H NMR (400 MHz, CDCl3) δ ppm 8.69 (s, 1H), 8.66 (d, J=4.0 Hz, 1H), 7.94 (d, J=4.0 Hz, 1H), 7.85 (t, J=8.0 Hz, 1H), 7.75 (t, J=8.0 Hz, 1H), 7.70-7.65 (m, 4H), 7.50 (t, J=8.0 Hz, 1H), 7.33-7.29 (m, 1H), 6.58 (q, J=8.0 Hz, 1H), 2.02 (d, J=8.0 Hz, 3H). Mass Spectrum (ESI) m/e=414 (M+1).

Workup

  1. waitAfter over night
  2. waitleft
  3. temperatureThe reaction mixture was heated to 110° C. for additional 2 days
  4. waitleft
  5. temperatureThe reaction was heated to 120° C. for 5 h
  6. temperaturebefore cool to rt
  7. customRemoval of solvent

Sources & evidence

ORD record
ord-902bbb71cb744ba1aae3926f95e537c5
Source dataset
uspto-grants-2014_12
Patent number
US08901135B2

Reaction notes

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