Pyridine → 2-[4-[4-Methanesulfonyloxybut-1-ynyl]phenyl]-7-methylimidazo[1,2-a]pyridine

HRID 1824545Notes

Reaction equation

HRID 1824545 reaction equation
[OH:1][CH2:2][CH2:3][C:4]#[C:5][C:6]1[CH:11]=[CH:10][C:9]([C:12]2[N:13]=[C:14]3[CH:19]=[C:18]([CH3:20])[CH:17]=[CH:16][N:15]3[CH:21]=2)=[CH:8][CH:7]=1.N1C=CC=CC=1.[CH3:28][S:29](Cl)(=[O:31])=[O:30]>ClCCl>[CH3:28][S:29]([O:1][CH2:2][CH2:3][C:4]#[C:5][C:6]1[CH:11]=[CH:10][C:9]([C:12]2[N:13]=[C:14]3[CH:19]=[C:18]([CH3:20])[CH:17]=[CH:16][N:15]3[CH:21]=2)=[CH:8][CH:7]=1)(=[O:31])=[O:30]

Participants

5

Reactant 3

HCID 1049PyridineHCID 31297Methanesulfonyl chlorideHCID 220155942-[4-[4-Hydroxybut-1-ynyl]phenyl]-7-methylimidazo[1,2-a]pyridine

Product 1

HCID 220156082-[4-[4-Methanesulfonyloxybut-1-ynyl]phenyl]-7-methylimidazo[1,2-a]pyridineYield 66.4%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
10 °C

Procedure

The product of Step B (0.135 g) in dichloromethane (3 mL) was treated with pyridine (0.37 g) and cooled to 10° C. The cold solution was treated with methanesulfonyl chloride (0.112 g) and allowed to stir and warm to ambient temperature over 18 hours. The reaction mixture was washed with 1% H2SO4 solution, saturated sodium bicarbonate solution, dried over magnesium sulfate, filtered and evaporated to give the title compound (0.115 g).

Workup

  1. temperaturewarm to ambient temperature over 18 hours
  2. washThe reaction mixture was washed with 1% H2SO4 solution, saturated sodium bicarbonate solution
  3. dry with materialdried over magnesium sulfate
  4. filtrationfiltered
  5. customevaporated

Sources & evidence

ORD record
ord-11503b219c9c435ca65c1d5ac25afea7
Source dataset
uspto-grants-2006_05
Patent number
US07041828B2

Reaction notes

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