4-[2-(4-bromophenyl)ethyl]morpholine

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:-30.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a mixture of lithium aluminum hydride (3.35 g, 88.16 mmol, 2.00 equiv) in tetrahydrofuran (100 mL) maintained under nitrogen at −30° C. was added a solution of 2-(4-bromophenyl)-1-morpholinoethanone (12.5 g, 44.17 mmol, 1.00 equiv) in tetrahydrofuran (30 mL) dropwise with stirring. The reaction mixture was stirred at −30° C. for 30 min and then at room temperature for 2 h. The reaction was then quenched sequentially by the addition of 3.5 mL of water, 10 mL of 15% aqueous sodium hydroxide solution and 3.5 mL of water. The solid was removed by filtration. The filtrate was extracted with 1×150 mL of ethyl acetate. The organic layer was collected then washed with 2×30 mL of brine, dried over anhydrous sodium sulfate and concentrated under vacuum to give 11.5 g (97%) of 4-(4-bromophenethyl)morpholine as a white solid. LC-MS: (ES, m/z): 311 [M+CH3CN+H]+, 270 [M+H]+, 130, 102. The reaction mixture was stirred at −30° C. for 30 min The reaction was then quenched sequentially by the addition of 3.5 mL of water, 10 mL of 15% aqueous sodium hydroxide solution and 3.5 mL of water The solid was removed by filtration The filtrate was extracted with 1×150 mL of ethyl acetate The organic layer was collected then washed with 2×30 mL of brine dried over anhydrous sodium sulfate concentrated under vacuum

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a mixture of 4-(4-bromophenethyl)morpholine (731 mg, 2.71 mmol) and 4,4,5,5-tetramethyl-2-vinyl-1,3,2-dioxaborolane (0.5 mL, 2.95 mmol, 1.1 eq.) in a 20 mL microwave vial was added Et3N (0.76 mL, 5.4 mmol, 2 eq.), followed by Pd(PtBu3)2 (14 mg, 0.027 mmol, 1 mol %). The resulting mixture was purged with argon, then capped and heated at 80° C. (oil temp.) for 2 h. After cooling to rt, the reaction was quenched with sat. NaHCO3 (10 mL), H2O (10 mL), extracted with EtOAc (30 mL×2) and dried over Na2SO4. After evaporation of the solvents, the residue was purified by Biotage column system (EtOAc/hex gradient: 0-100%) to give (E)-4-(4-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)vinyl)phenethyl)morpholine as a white solid (714 mg, 77%). 1H NMR (400 MHz, CDCl3) δ 7.42 (d, J=8.0 Hz, 2H), 7.38 (d, J=19.0 Hz, 1H), 7.19 (d, J=7.8 Hz, 2H), 6.13 (d, J=18.3 Hz, 1H), 3.75 (t, J=4.4 Hz, 4H), 2.84-2.77 (m, 2H), 2.63-2.56 (m, 2H), 2.53 (br, pseudo s, 4H), 1.32 (s, 12H). The resulting mixture was purged with argon capped After cooling to rt the reaction was quenched with sat. NaHCO3 (10 mL), H2O (10 mL) extracted with EtOAc (30 mL×2) dried over Na2SO4 After evaporation of the solvents the residue was purified by Biotage column system (EtOAc/hex gradient: 0-100%)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a mixture of 4-(4-bromophenethyl)morpholine (731 mg, 2.71 mmol) and 4,4,5,5-tetramethyl-2-vinyl-1,3,2-dioxaborolane (0.5 mL, 2.95 mmol, 1.1 eq.) in a 20 mL microwave vial was added Et3N (0.76 mL, 5.4 mmol, 2 eq.), followed by Pd(PtBu3)2 (14 mg, 0.027 mmol, 1 mol %). The resulting mixture was purged with argon, then capped and heated at 80° C. (oil temp.) for 2 h. After cooling to rt, the reaction was quenched with sat. NaHCO3 (10 mL), H2O (10 mL), extracted with EtOAc (30 mL×2) and dried over Na2SO4. After evaporation of the solvents, the residue was purified by Biotage column system (EtOAc/hex gradient: 0-100%) to give (E)-4-(4-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)vinyl)phenethyl)morpholine as a white solid (714 mg, 77%). 1H NMR (400 MHz, CDCl3) δ 7.42 (d, J=8.0 Hz, 2H), 7.38 (d, J=19.0 Hz, 1H), 7.19 (d, J=7.8 Hz, 2H), 6.13 (d, J=18.3 Hz, 1H), 3.75 (t, J=4.4 Hz, 4H), 2.84-2.77 (m, 2H), 2.63-2.56 (m, 2H), 2.53 (br, pseudo s, 4H), 1.32 (s, 12H). The resulting mixture was purged with argon capped After cooling to rt the reaction was quenched with sat. NaHCO3 (10 mL), H2O (10 mL) extracted with EtOAc (30 mL×2) dried over Na2SO4 After evaporation of the solvents the residue was purified by Biotage column system (EtOAc/hex gradient: 0-100%)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a mixture of 4-(4-bromophenethyl)morpholine (731 mg, 2.71 mmol) and 4,4,5,5-tetramethyl-2-vinyl-1,3,2-dioxaborolane (0.5 mL, 2.95 mmol, 1.1 eq.) and toluene (10 mL) in a 20 mL microwave vial was added Et3N (0.76 mL, 5.4 mmol, 2 eq.), followed by Pd(PtBu3)2 (14 mg, 0.027 mmol, 1 mol %). The resulting mixture was purged with argon, then capped and heated at 80° C. (oil temp.) for 2 h. After cooling to rt, it was quenched with sat. NaHCO3 (10 mL), H2O (10 mL), extracted with EtOAc (30 mL×2) and dried (Na2SO4). After evaporation of the solvents, the residue was purified by Biotage column system (EtOAc/hex gradient: 0-100%) to give (E)-4-(4-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)vinyl)phenethyl)morpholine as a white solid (714 mg, 77%). 1H NMR (400 MHz, CDCl3) δ 7.42 (d, J=8.0 Hz, 2H), 7.38 (d, J=19.0 Hz, 1H), 7.19 (d, J=7.8 Hz, 2H), 6.13 (d, J=18.3 Hz, 1H), 3.75 (t, J=4.4 Hz, 4H), 2.84-2.77 (m, 2H), 2.63-2.56 (m, 2H), 2.53 (br, pseudo s, 4H), 1.32 (s, 12H). The resulting mixture was purged with argon capped After cooling to rt it was quenched with sat. NaHCO3 (10 mL), H2O (10 mL) extracted with EtOAc (30 mL×2) dried (Na2SO4) After evaporation of the solvents the residue was purified by Biotage column system (EtOAc/hex gradient: 0-100%)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a mixture of 4-(4-bromophenethyl)morpholine (731 mg, 2.71 mmol) and 4,4,5,5-tetramethyl-2-vinyl-1,3,2-dioxaborolane (0.5 mL, 2.95 mmol, 1.1 eq.) in a 20 mL microwave vial was added Et3N (0.76 mL, 5.4 mmol, 2 eq.), followed by Pd(PtBu3)2 (14 mg, 0.027 mmol, 1 mol %). The resulting mixture was purged with argon, then capped and heated at 80° C. (oil temp.) for 2 h. After cooling to rt, the reaction was quenched with sat. NaHCO3 (10 mL), H2O (10 mL), extracted with EtOAc (30 mL×2) and dried over Na2SO4. After evaporation of the solvents, the residue was purified by Biotage column system (EtOAc/hex gradient: 0-100%) to give (E)-4-(4-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)vinyl)phenethyl)morpholine as a white solid (714 mg, 77%). 1H NMR (400 MHz, CDCl3) δ 7.42 (d, J=8.0 Hz, 2H), 7.38 (d, J=19.0 Hz, 1H), 7.19 (d, J=7.8 Hz, 2H), 6.13 (d, J=18.3 Hz, 1H), 3.75 (t, J=4.4 Hz, 4H), 2.84-2.77 (m, 2H), 2.63-2.56 (m, 2H), 2.53 (br, pseudo s, 4H), 1.32 (s, 12H). The resulting mixture was purged with argon capped After cooling to rt the reaction was quenched with sat. NaHCO3 (10 mL), H2O (10 mL) extracted with EtOAc (30 mL×2) dried over Na2SO4 After evaporation of the solvents the residue was purified by Biotage column system (EtOAc/hex gradient: 0-100%)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a mixture of 4-(4-bromophenethyl)morpholine (731 mg, 2.71 mmol) and 4,4,5,5-tetramethyl-2-vinyl-1,3,2-dioxaborolane (0.5 mL, 2.95 mmol, 1.1 eq.) and toluene (10 mL) in a 20 mL microwave vial was added Et3N (0.76 mL, 5.4 mmol, 2 eq.), followed by Pd(PtBu3)2 (14 mg, 0.027 mmol, 1 mol %). The resulting mixture was purged with argon, then capped and heated at 80° C. (oil temp.) for 2 h. After cooling to rt, it was quenched with sat. NaHCO3 (10 mL), H2O (10 mL), extracted with EtOAc (30 mL×2) and dried (Na2SO4). After evaporation of the solvents, the residue was purified by Biotage column system (EtOAc/hex gradient: 0-100%) to give (E)-4-(4-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)vinyl)phenethyl)morpholine as a white solid (714 mg, 77%). 1H NMR (400 MHz, CDCl3) δ 7.42 (d, J=8.0 Hz, 2H), 7.38 (d, J=19.0 Hz, 1H), 7.19 (d, J=7.8 Hz, 2H), 6.13 (d, J=18.3 Hz, 1H), 3.75 (t, J=4.4 Hz, 4H), 2.84-2.77 (m, 2H), 2.63-2.56 (m, 2H), 2.53 (br, pseudo s, 4H), 1.32 (s, 12H). The resulting mixture was purged with argon capped After cooling to rt it was quenched with sat. NaHCO3 (10 mL), H2O (10 mL) extracted with EtOAc (30 mL×2) dried (Na2SO4) After evaporation of the solvents the residue was purified by Biotage column system (EtOAc/hex gradient: 0-100%)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a mixture of 4-(4-bromophenethyl)morpholine (731 mg, 2.71 mmol) and 4,4,5,5-tetramethyl-2-vinyl-1,3,2-dioxaborolane (0.5 mL, 2.95 mmol, 1.1 eq.) and toluene (10 mL) in a 20 mL microwave vial was added Et3N (0.76 mL, 5.4 mmol, 2 eq.), followed by Pd(PtBu3)2 (14 mg, 0.027 mmol, 1 mol %). The resulting mixture was purged with argon, then capped and heated at 80° C. (oil temp.) for 2 h. After cooling to rt, it was quenched with sat. NaHCO3 (10 mL), H2O (10 mL), extracted with EtOAc (30 mL×2) and dried (Na2SO4). After evaporation of the solvents, the residue was purified by Biotage column system (EtOAc/hex gradient: 0-100%) to give (E)-4-(4-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)vinyl)phenethyl)morpholine as a white solid (714 mg, 77%). 1H NMR (400 MHz, CDCl3) δ 7.42 (d, J=8.0 Hz, 2H), 7.38 (d, J=19.0 Hz, 1H), 7.19 (d, J=7.8 Hz, 2H), 6.13 (d, J=18.3 Hz, 1H), 3.75 (t, J=4.4 Hz, 4H), 2.84-2.77 (m, 2H), 2.63-2.56 (m, 2H), 2.53 (br, pseudo s, 4H), 1.32 (s, 12H). The resulting mixture was purged with argon capped After cooling to rt it was quenched with sat. NaHCO3 (10 mL), H2O (10 mL) extracted with EtOAc (30 mL×2) dried (Na2SO4) After evaporation of the solvents the residue was purified by Biotage column system (EtOAc/hex gradient: 0-100%)

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a mixture of 4-(4-bromophenethyl)morpholine (731 mg, 2.71 mmol) and 4,4,5,5-tetramethyl-2-vinyl-1,3,2-dioxaborolane (0.5 mL, 2.95 mmol, 1.1 eq.) in a 20 mL microwave vial was added Et3N (0.76 mL, 5.4 mmol, 2 eq.), followed by Pd(PtBu3)2 (14 mg, 0.027 mmol, 1 mol %). The resulting mixture was purged with argon, then capped and heated at 80° C. (oil temp.) for 2 h. After cooling to rt, the reaction was quenched with sat. NaHCO3 (10 mL), H2O (10 mL), extracted with EtOAc (30 mL×2) and dried over Na2SO4. After evaporation of the solvents, the residue was purified by Biotage column system (EtOAc/hex gradient: 0-100%) to give (E)-4-(4-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)vinyl)phenethyl)morpholine as a white solid (714 mg, 77%). 1H NMR (400 MHz, CDCl3) δ 7.42 (d, J=8.0 Hz, 2H), 7.38 (d, J=19.0 Hz, 1H), 7.19 (d, J=7.8 Hz, 2H), 6.13 (d, J=18.3 Hz, 1H), 3.75 (t, J=4.4 Hz, 4H), 2.84-2.77 (m, 2H), 2.63-2.56 (m, 2H), 2.53 (br, pseudo s, 4H), 1.32 (s, 12H). The resulting mixture was purged with argon capped After cooling to rt the reaction was quenched with sat. NaHCO3 (10 mL), H2O (10 mL) extracted with EtOAc (30 mL×2) dried over Na2SO4 After evaporation of the solvents the residue was purified by Biotage column system (EtOAc/hex gradient: 0-100%)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a mixture of 4-(4-bromophenethyl)morpholine (731 mg, 2.71 mmol) and 4,4,5,5-tetramethyl-2-vinyl-1,3,2-dioxaborolane (0.5 mL, 2.95 mmol, 1.1 eq.) and toluene (10 mL) in a 20 mL microwave vial was added Et3N (0.76 mL, 5.4 mmol, 2 eq.), followed by Pd(PtBu3)2 (14 mg, 0.027 mmol, 1 mol %). The resulting mixture was purged with argon, then capped and heated at 80° C. (oil temp.) for 2 h. After cooling to rt, it was quenched with sat. NaHCO3 (10 mL), H2O (10 mL), extracted with EtOAc (30 mL×2) and dried (Na2SO4). After evaporation of the solvents, the residue was purified by Biotage column system (EtOAc/hex gradient: 0-100%) to give (E)-4-(4-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)vinyl)phenethyl)morpholine as a white solid (714 mg, 77%). 1H NMR (400 MHz, CDCl3) δ 7.42 (d, J=8.0 Hz, 2H), 7.38 (d, J=19.0 Hz, 1H), 7.19 (d, J=7.8 Hz, 2H), 6.13 (d, J=18.3 Hz, 1H), 3.75 (t, J=4.4 Hz, 4H), 2.84-2.77 (m, 2H), 2.63-2.56 (m, 2H), 2.53 (br, pseudo s, 4H), 1.32 (s, 12H). The resulting mixture was purged with argon capped After cooling to rt it was quenched with sat. NaHCO3 (10 mL), H2O (10 mL) extracted with EtOAc (30 mL×2) dried (Na2SO4) After evaporation of the solvents the residue was purified by Biotage column system (EtOAc/hex gradient: 0-100%)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a mixture of 4-(4-bromophenethyl)morpholine (731 mg, 2.71 mmol) and 4,4,5,5-tetramethyl-2-vinyl-1,3,2-dioxaborolane (0.5 mL, 2.95 mmol, 1.1 eq.) in a 20 mL microwave vial was added Et3N (0.76 mL, 5.4 mmol, 2 eq.), followed by Pd(PtBu3)2 (14 mg, 0.027 mmol, 1 mol %). The resulting mixture was purged with argon, then capped and heated at 80° C. (oil temp.) for 2 h. After cooling to rt, the reaction was quenched with sat. NaHCO3 (10 mL), H2O (10 mL), extracted with EtOAc (30 mL×2) and dried over Na2SO4. After evaporation of the solvents, the residue was purified by Biotage column system (EtOAc/hex gradient: 0-100%) to give (E)-4-(4-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)vinyl)phenethyl)morpholine as a white solid (714 mg, 77%). 1H NMR (400 MHz, CDCl3) δ 7.42 (d, J=8.0 Hz, 2H), 7.38 (d, J=19.0 Hz, 1H), 7.19 (d, J=7.8 Hz, 2H), 6.13 (d, J=18.3 Hz, 1H), 3.75 (t, J=4.4 Hz, 4H), 2.84-2.77 (m, 2H), 2.63-2.56 (m, 2H), 2.53 (br, pseudo s, 4H), 1.32 (s, 12H). The resulting mixture was purged with argon capped After cooling to rt the reaction was quenched with sat. NaHCO3 (10 mL), H2O (10 mL) extracted with EtOAc (30 mL×2) dried over Na2SO4 After evaporation of the solvents the residue was purified by Biotage column system (EtOAc/hex gradient: 0-100%)