4-(dibenzylamino)-2-methylbutan-2-ol

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Treat a −78° C. solution of 4-(dibenzylamino)-2-methylbutan-2-ol (110.0 g, 0.39 mol) in DCM (1 L) drop-wise with diethylaminosulfur trifluoride (75 g, 0.47 mol) under N2, allow it to warm to RT and stir overnight. Re-cool the mixture to −78° C., treat drop-wise with saturated NaHCO3 (300 mL), warm to RT, extract with EtOAc (3×), wash the combined organics with brine, dry over Na2SO4, concentrate to dryness and purify via silica gel chromatography (0.1-0.2% EtOAc/pet ether) to afford the title compound (44.0 g, 40% yield). MS (m/z): 286.2 (M+1). Re-cool the mixture to −78° C., treat warm to RT extract with EtOAc (3×) wash the combined organics with brine dry over Na2SO4 concentrate to dryness purify via silica gel chromatography (0.1-0.2% EtOAc/pet ether)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Treat a 0° C. solution of 4-(dibenzylamino)-2-methylbutan-2-ol (13 g, 45.9 mmol) in THF (200 mL), under N2, portion wise with KH (30%, 6.7 g, 50.9 mmol), stir at 0° C. for 0.5 h, add ethyl iodide (8.5 g, 55 mmol) drop-wise and warm to 60° C. overnight. Cool to 0° C., quench with satd. NH4Cl and concentrate partially. Extract with EtOAc (3×), wash the combined organics with brine, dry over Na2SO4, concentrate and purify via silica gel chromatography to afford the title compound (1.7 g, 12%). 1H NMR (400 MHz, DMSO-d6): δ 7.36-7.21 (m, 10H), 3.52 (s, 4H), 3.13 (t, J=7.2 Hz, 2H), 2.40-2.36 (m, 2H), 1.68-1.64 (m, 2H), 0.99 (m, 6H), 0.83 (q, J=7.2 Hz, 3H). warm to 60° C. overnight Cool to 0° C. quench with satd NH4Cl and concentrate partially Extract with EtOAc (3×) wash the combined organics with brine dry over Na2SO4 concentrate purify via silica gel chromatography

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Treat a 0° C. solution of 4-(dibenzylamino)-2-methylbutan-2-ol (13 g, 45.9 mmol) in THF (200 mL), under N2, portion wise with KH (30%, 6.7 g, 50.9 mmol), stir at 0° C. for 0.5 h, add ethyl iodide (8.5 g, 55 mmol) drop-wise and warm to 60° C. overnight. Cool to 0° C., quench with satd. NH4Cl and concentrate partially. Extract with EtOAc (3×), wash the combined organics with brine, dry over Na2SO4, concentrate and purify via silica gel chromatography to afford the title compound (1.7 g, 12%). 1H NMR (400 MHz, DMSO-d6): δ 7.36-7.21 (m, 10H), 3.52 (s, 4H), 3.13 (t, J=7.2 Hz, 2H), 2.40-2.36 (m, 2H), 1.68-1.64 (m, 2H), 0.99 (m, 6H), 0.83 (q, J=7.2 Hz, 3H). warm to 60° C. overnight Cool to 0° C. quench with satd NH4Cl and concentrate partially Extract with EtOAc (3×) wash the combined organics with brine dry over Na2SO4 concentrate purify via silica gel chromatography

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Add potassium hydride (30%, 2.6 g, 19.4 mmol) portion wise under N2 to a 0° C. solution of 4-(dibenzylamino)-2-methylbutan-2-ol (5 g, 17.6 mmol) in THF (50 mL). Stir the mixture at 0° C. for 0.5 h, treat drop-wise with methyl iodide [MeI] (2.76 g, 19.4 mmol), allow the mixture to warm to RT and stir for 3 h. Re-cool the mixture to 0° C., treat with saturated NH4Cl, and remove the organics under reduced pressure. Extract the residue with EtOAc (3×), wash the combined organics with brine, dry over Na2SO4, concentrate and purify via silica gel chromatography (Pet ether/EtOAc, 50:1) to afford the title compound (3.0 g, 57%). 1H NMR (400 MHz, DMSO-d6): δ 7.29 (m, 10H), 3.58 (s, 4H), 3.05 (s, 3H), 2.50 (m, 2H), 1.73 (m, 2H), 1.07 (s, 6H). treat to warm to RT stir for 3 h remove the organics under reduced pressure Extract the residue with EtOAc (3×) wash the combined organics with brine dry over Na2SO4 concentrate purify via silica gel chromatography (Pet ether/EtOAc, 50:1)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Add potassium hydride (30%, 2.6 g, 19.4 mmol) portion wise under N2 to a cooled solution (0° C.) of 4-(dibenzylamino)-2-methylbutan-2-ol (5 g, 17.6 mmol) in THF (50 mL). Stir the mixture at 0° C. for 0.5 h, treat with MeI (2.76 g, 19.4 mmol) dropwise, allow the mixture to warm to RT and stir for 3 h. Re-cool the mixture to 0° C., treat with saturated. NH4Cl, and remove the organics under reduced pressure. Extract the residue with EtOAc (3×), wash the combined organics with brine, dry over Na2SO4, concentrate and purify via silica gel chromatography (Pet ether/EtOAc, 50:1) to afford the title compound (3.0 g, 57% yield). 1H NMR (400 MHz, DMSO-d6): δ 7.29 (m, 10H), 3.58 (s, 4H), 3.05 (s, 3H), 2.50 (m, 2H), 1.73 (m, 2H), 1.07 (s, 6H). to warm to RT stir for 3 h Re-cool the mixture to 0° C., treat with saturated NH4Cl, and remove the organics under reduced pressure Extract the residue with EtOAc (3×) wash the combined organics with brine dry over Na2SO4 concentrate purify via silica gel chromatography (Pet ether/EtOAc, 50:1)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In a cooled solution (−78° C.) of 4-(dibenzylamino)-2-methylbutan-2-ol (110.0 g, 0.39 mol) in DCM (1 L), add diethylaminosulfur trifluoride (75 g, 0.47 mol) dropwise under N2, allow it to warm to RT and stir overnight. Re-cool the mixture to −78° C., add dropwise with saturated NaHCO3 (300 mL), warm to RT, extract with EtOAc (3×), wash the combined organics with brine, dry over Na2SO4, concentrate to dryness and purify via silica gel chromatography (0.1-0.2% EtOAc/pet ether) to afford the title compound (44.0 g, 40% yield). MS (m/z): 286.2 (M+1). warm to RT extract with EtOAc (3×) wash the combined organics with brine dry over Na2SO4 concentrate to dryness purify via silica gel chromatography (0.1-0.2% EtOAc/pet ether)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Treat a −78° C. solution of 4-(dibenzylamino)-2-methylbutan-2-ol (110.0 g, 0.39 mol) in DCM (1 L) drop-wise with diethylaminosulfur trifluoride (75 g, 0.47 mol) under N2, allow it to warm to RT and stir overnight. Re-cool the mixture to −78° C., treat drop-wise with saturated NaHCO3 (300 mL), warm to RT, extract with EtOAc (3×), wash the combined organics with brine, dry over Na2SO4, concentrate to dryness and purify via silica gel chromatography (0.1-0.2% EtOAc/pet ether) to afford the title compound (44.0 g, 40% yield). MS (m/z): 286.2 (M+1). Re-cool the mixture to −78° C., treat warm to RT extract with EtOAc (3×) wash the combined organics with brine dry over Na2SO4 concentrate to dryness purify via silica gel chromatography (0.1-0.2% EtOAc/pet ether)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Treat a 0° C. solution of 4-(dibenzylamino)-2-methylbutan-2-ol (13 g, 45.9 mmol) in THF (200 mL), under N2, portion wise with KH (30%, 6.7 g, 50.9 mmol), stir at 0° C. for 0.5 h, add ethyl iodide (8.5 g, 55 mmol) drop-wise and warm to 60° C. overnight. Cool to 0° C., quench with satd. NH4Cl and concentrate partially. Extract with EtOAc (3×), wash the combined organics with brine, dry over Na2SO4, concentrate and purify via silica gel chromatography to afford the title compound (1.7 g, 12%). 1H NMR (400 MHz, DMSO-d6): δ 7.36-7.21 (m, 10H), 3.52 (s, 4H), 3.13 (t, J=7.2 Hz, 2H), 2.40-2.36 (m, 2H), 1.68-1.64 (m, 2H), 0.99 (m, 6H), 0.83 (q, J=7.2 Hz, 3H). warm to 60° C. overnight Cool to 0° C. quench with satd NH4Cl and concentrate partially Extract with EtOAc (3×) wash the combined organics with brine dry over Na2SO4 concentrate purify via silica gel chromatography

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Add potassium hydride (30%, 2.6 g, 19.4 mmol) portion wise under N2 to a 0° C. solution of 4-(dibenzylamino)-2-methylbutan-2-ol (5 g, 17.6 mmol) in THF (50 mL). Stir the mixture at 0° C. for 0.5 h, treat drop-wise with methyl iodide [MeI] (2.76 g, 19.4 mmol), allow the mixture to warm to RT and stir for 3 h. Re-cool the mixture to 0° C., treat with saturated NH4Cl, and remove the organics under reduced pressure. Extract the residue with EtOAc (3×), wash the combined organics with brine, dry over Na2SO4, concentrate and purify via silica gel chromatography (Pet ether/EtOAc, 50:1) to afford the title compound (3.0 g, 57%). 1H NMR (400 MHz, DMSO-d6): δ 7.29 (m, 10H), 3.58 (s, 4H), 3.05 (s, 3H), 2.50 (m, 2H), 1.73 (m, 2H), 1.07 (s, 6H). treat to warm to RT stir for 3 h remove the organics under reduced pressure Extract the residue with EtOAc (3×) wash the combined organics with brine dry over Na2SO4 concentrate purify via silica gel chromatography (Pet ether/EtOAc, 50:1)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Add potassium hydride (30%, 2.6 g, 19.4 mmol) portion wise under N2 to a cooled solution (0° C.) of 4-(dibenzylamino)-2-methylbutan-2-ol (5 g, 17.6 mmol) in THF (50 mL). Stir the mixture at 0° C. for 0.5 h, treat with MeI (2.76 g, 19.4 mmol) dropwise, allow the mixture to warm to RT and stir for 3 h. Re-cool the mixture to 0° C., treat with saturated. NH4Cl, and remove the organics under reduced pressure. Extract the residue with EtOAc (3×), wash the combined organics with brine, dry over Na2SO4, concentrate and purify via silica gel chromatography (Pet ether/EtOAc, 50:1) to afford the title compound (3.0 g, 57% yield). 1H NMR (400 MHz, DMSO-d6): δ 7.29 (m, 10H), 3.58 (s, 4H), 3.05 (s, 3H), 2.50 (m, 2H), 1.73 (m, 2H), 1.07 (s, 6H). to warm to RT stir for 3 h Re-cool the mixture to 0° C., treat with saturated NH4Cl, and remove the organics under reduced pressure Extract the residue with EtOAc (3×) wash the combined organics with brine dry over Na2SO4 concentrate purify via silica gel chromatography (Pet ether/EtOAc, 50:1)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In a cooled solution (−78° C.) of 4-(dibenzylamino)-2-methylbutan-2-ol (110.0 g, 0.39 mol) in DCM (1 L), add diethylaminosulfur trifluoride (75 g, 0.47 mol) dropwise under N2, allow it to warm to RT and stir overnight. Re-cool the mixture to −78° C., add dropwise with saturated NaHCO3 (300 mL), warm to RT, extract with EtOAc (3×), wash the combined organics with brine, dry over Na2SO4, concentrate to dryness and purify via silica gel chromatography (0.1-0.2% EtOAc/pet ether) to afford the title compound (44.0 g, 40% yield). MS (m/z): 286.2 (M+1). warm to RT extract with EtOAc (3×) wash the combined organics with brine dry over Na2SO4 concentrate to dryness purify via silica gel chromatography (0.1-0.2% EtOAc/pet ether)