Hydrochloric Acid → Lumacaftor

HRID 2410394Notes

Reaction equation

HRID 2410394 reaction equation
[F:1][C:2]1([F:37])[O:6][C:5]2[CH:7]=[CH:8][C:9]([C:11]3([C:14]([NH:16][C:17]4[N:22]=[C:21]([C:23]5[C:24](C(C)(C)C)=[C:25]([CH:29]=[CH:30][CH:31]=5)[C:26]([O-:28])=[O:27])[C:20]([CH3:36])=[CH:19][CH:18]=4)=[O:15])[CH2:13][CH2:12]3)=[CH:10][C:4]=2[O:3]1.O.Cl>CC#N>[F:37][C:2]1([F:1])[O:6][C:5]2[CH:7]=[CH:8][C:9]([C:11]3([C:14]([NH:16][C:17]4[N:22]=[C:21]([C:23]5[CH:24]=[C:25]([CH:29]=[CH:30][CH:31]=5)[C:26]([OH:28])=[O:27])[C:20]([CH3:36])=[CH:19][CH:18]=4)=[O:15])[CH2:13][CH2:12]3)=[CH:10][C:4]=2[O:3]1

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 962Water2×HCID 866321873-(6-(1-(2,2-Difluorobenzo[d][1,3]dioxol-5-yl) cyclopropanecarboxamido)-3-methylpyridin-2-yl)-t-butylbenzoate

Product 1

HCID 16678941Lumacaftor

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Conditions

Temperature
45 °C

Procedure

To a slurry of compound 8 (1.0 eq) in MeCN (3.0 vol) is added water (0.83 vol) followed by concentrated aqueous HCl (0.83 vol). The mixture is heated to 45±5° C. After stirring for 24 to 48 hours the reaction is complete and the mixture is allowed to cool to ambient. Water (1.33 vol) is added and the mixture stirred. The solid is collected by filtration, washed with water (2×0.3 vol), and partially dried on the filter under vacuum. The solid is dried to constant weight (<1% difference) in a vacuum oven at 60° C. with a slight N2 bleed to afford compound 9 as an off-white solid.

Workup

  1. temperatureto cool to ambient
  2. stirringthe mixture stirred
  3. filtrationThe solid is collected by filtration
  4. washwashed with water (2×0.3 vol)
  5. custompartially dried on the
  6. filtrationfilter under vacuum
  7. dry with materialThe solid is dried to constant weight (<1% difference) in a vacuum oven at 60° C. with a slight N2

Sources & evidence

ORD record
ord-ec1629030ffa424684e21dc9ba479644
Source dataset
uspto-grants-2014_08
Patent number
US08816093B2

Reaction notes

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