2-Methyl-3-butyn-2-ol → HCID 68667918, compound

HRID 1802475Notes

Reaction equation

HRID 1802475 reaction equation
Br[C:2]1[CH:28]=[CH:27][C:5]2[N:6]=[C:7]([NH:15][C:16]3[C:21]([Cl:22])=[CH:20][C:19]([CH:23]([OH:25])[CH3:24])=[CH:18][C:17]=3[Cl:26])[C:8]3[CH:9]=[CH:10][NH:11][C:12](=[O:14])[C:13]=3[C:4]=2[CH:3]=1.C(N(CC)CC)C.[CH3:36][C:37]([OH:41])([C:39]#[CH:40])[CH3:38]>CN(C=O)C.[Cu](I)I.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:26][C:17]1[CH:18]=[C:19]([CH:23]([OH:25])[CH3:24])[CH:20]=[C:21]([Cl:22])[C:16]=1[NH:15][C:7]1[C:8]2[CH:9]=[CH:10][NH:11][C:12](=[O:14])[C:13]=2[C:4]2[CH:3]=[C:2]([C:40]#[C:39][C:37]([OH:41])([CH3:38])[CH3:36])[CH:28]=[CH:27][C:5]=2[N:6]=1

Participants

7

Reactant 3

HCID 82582-Methyl-3-butyn-2-olHCID 8471TriethylamineHCID 59436025HCID 59436025, compound

Product 1

HCID 68667918HCID 68667918, compound

Reagents, catalysts & solvents 3

HCID 83717Copper iodideCatalystHCID 178418397HCID 178418397, compoundCatalystHCID 6228DimethylformamideSolvent

Conditions

Temperature
65 °C

Procedure

To a solution of 9-bromo-5-{[2,6-dichloro-4-(1-hydroxyethyl)phenyl]amino}benzo[c]-2,6-naphthyridin-1(2H)-one (292 mg, 0.61 mmol) in DMF (3 mL) were added triethylamine (0.255 mL, 1.83 mmol), copper iodide (23 mg, 0.12 mmol), tetrakis(triphenylphosphine)palladium (0) (70 mg, 0.06 mmol), and 2-methyl-3-butyn-2-ol (0.179 mL, 1.83 mmol). The solution was degassed by bubbling nitrogen gas and heated to 65° C. for 14 hr. The solution was diluted with EtOAc and washed with water, dried with Na2SO4, filtered, and concentrated under reduced pressure. Purification with column chromatography on silica gel (100% CH2Cl2 to 70% CH2Cl2/30% MeOH) provided 5-{[2,6-dichloro-4-(1-hydroxyethyl)phenyl]amino}-9-(3-hydroxy-3-methylbut-1-yn-1-yl)benzo[c]-2,6-naphthyridin-1(2H)-one as a mixture of enantiomers. The enantiomers were separated on Chiral Technology AD 2×25 cm column at 12 mL/min using 1:1 iPrOH/Heptane in a 25 min run. First enantiomer has a retention time of 7.57 min and the second enantiomer has a retention time of 15.74 min. For both enantiomers: 1H NMR (500 MHz, CD3OD) δ 9.80 (d, 1H), 7.60 (d, 1H), 7.50-7.40 (m, 3H), 7.34 (d, 1H), 3.90 (m, 1H), 1.48 (s, 3H), 1.47 (s, 3H), 1.12 (d, 3 H). LRMS (ESI) calc'd for C25H22Cl2N3O3 [M+H]+, 482.1; found 482.1.

Workup

  1. customThe solution was degassed
  2. customby bubbling nitrogen gas
  3. additionThe solution was diluted with EtOAc
  4. washwashed with water
  5. dry with materialdried with Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. customPurification with column chromatography on silica gel (100% CH2Cl2 to 70% CH2Cl2/30% MeOH)

Sources & evidence

ORD record
ord-aa93f903b1584ac7baf0f7bcee2c11ac
Source dataset
uspto-grants-2013_01
Patent number
US08349865B2

Reaction notes

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