Triethylamine → 3-tert-butoxycarbonyl-7-chloro-6-[5-(4-fluorophenylethynyl)-pyridin-2-ylmethylthio]-2,3,4,5-tetrahydro-1H-benzo[d]azepine

HRID 2041373Notes

Reaction equation

HRID 2041373 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:14][CH2:13][C:12]2[C:15]([S:20][CH2:21][C:22]3[CH:27]=[CH:26][C:25](Br)=[CH:24][N:23]=3)=[C:16]([Cl:19])[CH:17]=[CH:18][C:11]=2[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C(N(CC)CC)C.[C:36]([C:38]1[CH:43]=[CH:42][C:41]([F:44])=[CH:40][CH:39]=1)#[CH:37]>CN(C=O)C>[C:1]([O:5][C:6]([N:8]1[CH2:14][CH2:13][C:12]2[C:15]([S:20][CH2:21][C:22]3[CH:27]=[CH:26][C:25]([C:37]#[C:36][C:38]4[CH:43]=[CH:42][C:41]([F:44])=[CH:40][CH:39]=4)=[CH:24][N:23]=3)=[C:16]([Cl:19])[CH:17]=[CH:18][C:11]=2[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 5226271-Ethynyl-4-fluorobenzeneHCID 576562493-tert-butoxycarbonyl-6-(5-bromopyridin-2-ylmethylthio)-7-chloro-2,3,4,5-tetrahydro-1H-benzo[d]azepine

Product 1

HCID 667072243-tert-butoxycarbonyl-7-chloro-6-[5-(4-fluorophenylethynyl)-pyridin-2-ylmethylthio]-2,3,4,5-tetrahydro-1H-benzo[d]azepineYield 95%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
65 °C

Procedure

Dissolve 3-tert-butoxycarbonyl-6-(5-bromopyridin-2-ylmethylthio)-7-chloro-2,3,4,5-tetrahydro-1H-benzo[d]azepine (1.0 g, 2.07 mmol), tetrakistriphenylphosphine palladium(0) (120 mg, 0.104 mmol), cuprous iodide (20 mg, 0.105 mmol), triethylamine (2.60 mL) and 1-ethynyl-4-fluorobenzene (500 mg, 4.16 mmol) in DMF (8 mL). Degas the mixture, purge with nitrogen, and heat at 65° C. for 3 days. Dilute the mixture with water, extract three times with EtOAc, dry over anhydrous Na2SO4, and concentrate in vacuo. Purify by chromatography on silica gel eluting with hexane/EtOAc (50:1) to give 3-tert-butoxycarbonyl-7-chloro-6-[5-(4-fluorophenylethynyl)-pyridin-2-ylmethylthio]-2,3,4,5-tetrahydro-1H-benzo[d]azepine as a tan foam (1.02 g, 95%). MS (APCI+) m/z: 523 (M+H)+, 423 (M+H-Boc)+. Use a method similar to the General Procedure 1-4 to give the title compound as a tan powder. MS (APCI+) m/z: 423 (M+H)+.

Workup

  1. customDegas the mixture
  2. custompurge with nitrogen
  3. additionDilute the mixture with water
  4. extractionextract three times with EtOAc
  5. dry with materialdry over anhydrous Na2SO4
  6. concentrationconcentrate in vacuo
  7. customPurify by chromatography on silica gel eluting with hexane/EtOAc (50:1)

Sources & evidence

ORD record
ord-6bfc413e629544508a68463ba56161c9
Source dataset
uspto-grants-2013_11
Patent number
US08580780B2

Reaction notes

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