Sodium Carbonate → 4-[4-Amino-3-(4,4-dimethyl-cyclohex-1-enyl)-phenyl]-1,1-dioxo-hexahydro-1lambda6-thiopyran-4-carbonitrile

HRID 536972Notes

Reaction equation

HRID 536972 reaction equation
[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2([C:16]#[N:17])[CH2:13][CH2:12][S:11](=[O:15])(=[O:14])[CH2:10][CH2:9]2)=[CH:4][C:3]=1Br.[CH3:19][C:20]1([CH3:35])[CH2:25][CH2:24][C:23](B2OC(C)(C)C(C)(C)O2)=[CH:22][CH2:21]1.C([O-])([O-])=O.[Na+].[Na+]>CN(C=O)C.CCOC(C)=O.O.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2([C:16]#[N:17])[CH2:13][CH2:12][S:11](=[O:15])(=[O:14])[CH2:10][CH2:9]2)=[CH:4][C:3]=1[C:23]1[CH2:24][CH2:25][C:20]([CH3:35])([CH3:19])[CH2:21][CH:22]=1

Participants

8

Reactant 3

HCID 10340Sodium CarbonateHCID 231420132-(4,4-Dimethylcyclohex-1-en-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolaneHCID 589950244-(4-Amino-3-bromo-phenyl)-1,1-dioxo-hexahydro-1lambda6-thiopyran-4-carbonitrile

Product 1

HCID 589950684-[4-Amino-3-(4,4-dimethyl-cyclohex-1-enyl)-phenyl]-1,1-dioxo-hexahydro-1lambda6-thiopyran-4-carbonitrileYield 100%

Reagents, catalysts & solvents 4

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 962WaterSolventHCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
60 °C

Procedure

A solution of 4-(4-amino-3-bromo-phenyl)-1,1-dioxo-hexahydro-1λ6-thiopyran-4-carbonitrile (109 mg, 0.332 mmol, as prepared in the previous step) in DMF (4 mL) was treated with 2-(4,4-dimethyl-cyclohex-1-enyl)-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane (94.1 mg, 0.398 mmol) and aq Na2CO3 (1.32 mL, 2.66 mmol, 2.0 M). The mixture was degassed via sonication, placed under Ar, treated with Pd(dppf)Cl2 (24.3 mg, 0.034 mmol), and heated to 60° C. for 24 h. The cooled mixture was diluted with EtOAc and water. The aqueous layer was extracted with EtOAc (4×). The combined organic layers were dried over MgSO4 and concentrated in vacuo. Purification of the residue by silica gel chromatography on a 10-g Isolute SPE column (FlashMaster system) with 25% EtOAc-hexane afforded the title compound (119 mg, 100%) as a white solid. Mass spectrum (ESI, m/z): Calcd. for C20H26N2O2S, 359.2 (M+H). found 359.3.

Workup

  1. customThe mixture was degassed via sonication
  2. extractionThe aqueous layer was extracted with EtOAc (4×)
  3. dry with materialThe combined organic layers were dried over MgSO4
  4. concentrationconcentrated in vacuo
  5. customPurification of the residue by silica gel chromatography on a 10-g Isolute SPE column (FlashMaster system) with 25% EtOAc-hexane

Sources & evidence

ORD record
ord-47fc93bd29fd46cdac74c717e851105a
Source dataset
uspto-grants-2014_10
Patent number
US08859602B2

Reaction notes

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