Sodium Carbonate → 6'-(3-Chloro-5-fluorophenyl)-2',2'-dimethyldispiro[1,3-oxazole-4,4'-chromene-3',3''-oxetan]-2-amine

HRID 594909Notes

Reaction equation

HRID 594909 reaction equation
Br[C:2]1[CH:3]=[C:4]2[C:31](=[CH:32][CH:33]=1)[O:30][C:29]([CH3:35])([CH3:34])[C:25]1([CH2:28][O:27][CH2:26]1)[C:5]12[CH2:9][O:8][C:7]([N:10](C(OC(C)(C)C)=O)C(OC(C)(C)C)=O)=[N:6]1.[Cl:36][C:37]1[CH:38]=[C:39](B(O)O)[CH:40]=[C:41]([F:43])[CH:42]=1.C([O-])([O-])=O.[Na+].[Na+]>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:36][C:37]1[CH:38]=[C:39]([C:2]2[CH:3]=[C:4]3[C:31](=[CH:32][CH:33]=2)[O:30][C:29]([CH3:35])([CH3:34])[C:25]2([CH2:28][O:27][CH2:26]2)[C:5]23[CH2:9][O:8][C:7]([NH2:10])=[N:6]2)[CH:40]=[C:41]([F:43])[CH:42]=1

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 15391287(3-Chloro-5-fluorophenyl)boronic acidHCID 86724228Di-tert-butyl (6'-bromo-2',2'-dimethyldispiro[1,3-oxazole-4,4'-chromene-3',3''-oxetan]-2-yl)imidodicarbonate

Product 1

HCID 867243136'-(3-Chloro-5-fluorophenyl)-2',2'-dimethyldispiro[1,3-oxazole-4,4'-chromene-3',3''-oxetan]-2-amineYield 45.8%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of di-tert-butyl (6′-bromo-2′,2′-dimethyldispiro[1,3-oxazole-4,4′-chromene-3′,3″-oxetan]-2-yl)imidodicarbonate (13.8 mg), 3-chloro-5-fluorophenylboronic acid (8.7 mg), Pd(PPh3)4 (2.9 mg) and 1M aqueous Na2CO3 (0.063 mL) in dioxane (0.25 mL) was stirred for 12 hours at 100° C. The mixture was filtered by using Chem Elut cartridges and washed with CHCl3. The filtrate was evaporated. The residue was purified with HPLC (Column: Waters SunFire™ Prep C18 OBD™ 5 micrometer, 19×100 mm; MeOH/0.1% aqueous HCOOH 11/89 to 95/5(v/v)) and afforded 6′-(3-chloro-5-fluorophenyl)-2′,2′-dimethyldispiro[1,3-oxazole-4,4′-chromene-3′,3″-oxetan]-2-amine (4.6 mg).

Workup

  1. filtrationThe mixture was filtered
  2. washwashed with CHCl3
  3. customThe filtrate was evaporated
  4. customThe residue was purified with HPLC (Column: Waters SunFire™ Prep C18 OBD™ 5 micrometer, 19×100 mm; MeOH/0.1% aqueous HCOOH 11/89 to 95/5(v/v)) and

Sources & evidence

ORD record
ord-accd5c84590f4bfdb7fe0877bf92d6cc
Source dataset
uspto-grants-2016_01
Patent number
US09242973B2

Reaction notes

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