(E)-3-cyclopentylprop-2-enal

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

Procedure: A solution of (2E)-3-cyclopentylacrylaldehyde (28, 654 mg, 5.0 mmol, 5.0 equiv), (2R)-2-(bis[3,5-bis(trifluoromethyl)phenyl][tert-butyl(dimethyl)silyl]oxymethyl)pyrrolidine ((R)-35, 64 mg, 0.10 mmol, 0.10 equiv) and 4-nitrobenzoic acid (17 mg, 0.10 mmol, 0.10 equiv) in anhydrous toluene (4.0 mL, 38 mmol) was stirred at rt for 10 min, then cooled to 0° C. before 4-bromo-1H-pyrazole (39, 148 mg, 1.0 mmol) was then added. The resulting reaction mixture was stirred at 0° C. for 22 h. When LCMS showed the reaction was deemed complete, the reaction mixture was concentrated under reduced pressure. The residue was directly purified by CombiFlash (SiO2) with 0-30% EtOAc/hexane gradient elution to give (3R)-3-(4-bromo-1H-pyrazol-1-yl)-3-cyclopentylpropanal ((R)-40, 230.5 mg, 271.2 mg theoretical, 85% yield) as a pale yellow viscous oil. For (R)-40: C11H15BrN2O (MW, 271.15), LCMS (EI) m/e 271/273 (M++H). was then added The resulting reaction mixture the reaction mixture was concentrated under reduced pressure The residue was directly purified by CombiFlash (SiO2) with 0-30% EtOAc/hexane gradient elution

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

Procedure: A solution of (2E)-3-cyclopentylacrylaldehyde (28, 327 mg, 2.50 mmol, 5.0 equiv), (2R)-2-bis[3,5-bis(trifluoromethyl)phenyl][(triethylsilyl)oxy]methylpyrrolidine ((R)-35, 32 mg, 0.050 mmol, 0.10 equiv) and 4-nitrobenzoic acid (8.5 mg, 0.050 mmol, 0.10 equiv) in anhydrous toluene (5.0 mL, 47 mmol) was stirred at room temperature for 10 min before 4-(1H-pyrazol-4-yl)-7-[2-(trimethylsilyl)ethoxy]methyl-7H-pyrrolo[2,3-d]pyrimidine (17, 158 mg, 0.50 mmol) was added. The resulting reaction mixture was stirred at room temperature for 24 h. When LCMS showed that the reaction was deemed complete, the reaction mixture was concentrated under reduced pressure. The residue was directly purified by Combiflash (SiO2) with 0-70% EtOAc/hexane gradient elution to give (3R)-3-cyclopentyl-3-[4-(7-[2-(trimethylsilyl)ethoxy]methyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]propanal ((R)-38, 184.1 mg, 219.8 mg theoretical, 83.8% yield) as a pale yellow viscous oil. For (R)-38: C23H33N5O2Si (MW, 439.63), LCMS (EI) m/e 440 (M++H). was added The resulting reaction mixture the reaction mixture was concentrated under reduced pressure The residue was directly purified by Combiflash (SiO2) with 0-70% EtOAc/hexane gradient elution

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

Procedure: A solution of (2E)-3-cyclopentylacrylaldehyde (28, 345 mg, 2.50 mmol, 5.0 equiv), (2R)-2-bis[3,5-bis(trifluoromethyl)phenyl][(triethylsilyl)oxy]methylpyrrolidine ((R)-35, 16 mg, 0.025 mmol, 0.05 equiv) and 4-nitrobenzoic acid (4.3 mg, 0.025 mmol, 0.05 equiv) in anhydrous chloroform (CHCl3, 2.0 mL, 25 mmol) was stirred at room temperature for 10 min before [4-(1H-pyrazol-4-yl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl]methyl pivalate (5, 0.150 g, 0.50 mmol) was added. The resulting reaction mixture was stirred at room temperature for 23 h. After LCMS showed that the reaction was deemed complete, the reaction mixture was concentrated under reduced pressure. The residue was directly purified by Combiflash with 0-80% EtOAc/hexane gradient elution to afford (1R)-(4-(1-(1-cyclopentyl-3-oxopropyl)-1H-pyrazol-4-yl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl)methyl pivalate ((R)-37, 169 mg, 211.8 mg theoretical, 80% yield) as a pale yellow foam. For (R)-37: C23H29N5O3 (MW, 423.51), LCMS (EI) m/e 424 (M++H). was added The resulting reaction mixture the reaction mixture was concentrated under reduced pressure The residue was directly purified by Combiflash with 0-80% EtOAc/hexane gradient elution

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

Procedure: To a stirred suspension of triphenylphosphoranylidene)acetaldehyde (27, 62.75 g, 200.0 mmol, 1.0 equiv) in anhydrous benzene (400 mL, 4476 mmol) was added cyclopentanecarbaldehyde (26, 21.36 mL, 200.0 mmol) at room temperature. The resulting reaction mixture was then heated at 80° C. for 16 h. When TLC and HPLC showed that the reaction was deemed complete, the reaction mixture was concentrated under reduced pressure. The residue was then directly purified by Combiflash (SiO2) with 0-10% EtOAc/hexane gradient elution to afford (2E)-3-cyclopentylacrylaldehyde (28, 14.4 g, 24.84 g theoretical, 58% yield) as a yellow oil. For 28: 1H NMR (DMSO-d6, 400 MHz) δ ppm 1H NMR (CDCl3, 400 MHz) δ 9.49 (d, 1H, J=7.8 Hz), 6.82 (dd, 1H, J=15.6, 7.8 Hz), 6.08 (dd, 1H, J=15.6, 8.0 Hz), 2.72 (m, 1H), 1.89 (m, 2H), 1.67 (m, 4H), 1.44 (m, 2H); C8H2O (MW, 124.18) LCMS (EI) m/e 125 (M++H). The resulting reaction mixture the reaction mixture was concentrated under reduced pressure The residue was then directly purified by Combiflash (SiO2) with 0-10% EtOAc/hexane gradient elution

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

Procedure: A solution of (2E)-3-cyclopentylacrylaldehyde (28, 654 mg, 5.0 mmol, 5.0 equiv), (2R)-2-(bis[3,5-bis(trifluoromethyl)phenyl][tert-butyl(dimethyl)silyl]oxymethyl)pyrrolidine ((R)-35, 64 mg, 0.10 mmol, 0.10 equiv) and 4-nitrobenzoic acid (17 mg, 0.10 mmol, 0.10 equiv) in anhydrous toluene (4.0 mL, 38 mmol) was stirred at rt for 10 min, then cooled to 0° C. before 4-bromo-1H-pyrazole (39, 148 mg, 1.0 mmol) was then added. The resulting reaction mixture was stirred at 0° C. for 22 h. When LCMS showed the reaction was deemed complete, the reaction mixture was concentrated under reduced pressure. The residue was directly purified by CombiFlash (SiO2) with 0-30% EtOAc/hexane gradient elution to give (3R)-3-(4-bromo-1H-pyrazol-1-yl)-3-cyclopentylpropanal ((R)-40, 230.5 mg, 271.2 mg theoretical, 85% yield) as a pale yellow viscous oil. For (R)-40: C11H15BrN2O (MW, 271.15), LCMS (EI) m/e 271/273 (M++H). was then added The resulting reaction mixture the reaction mixture was concentrated under reduced pressure The residue was directly purified by CombiFlash (SiO2) with 0-30% EtOAc/hexane gradient elution

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

Procedure: A solution of (2E)-3-cyclopentylacrylaldehyde (28, 327 mg, 2.50 mmol, 5.0 equiv), (2R)-2-bis[3,5-bis(trifluoromethyl)phenyl][(triethylsilyl)oxy]methylpyrrolidine ((R)-35, 32 mg, 0.050 mmol, 0.10 equiv) and 4-nitrobenzoic acid (8.5 mg, 0.050 mmol, 0.10 equiv) in anhydrous toluene (5.0 mL, 47 mmol) was stirred at room temperature for 10 min before 4-(1H-pyrazol-4-yl)-7-[2-(trimethylsilyl)ethoxy]methyl-7H-pyrrolo[2,3-d]pyrimidine (17, 158 mg, 0.50 mmol) was added. The resulting reaction mixture was stirred at room temperature for 24 h. When LCMS showed that the reaction was deemed complete, the reaction mixture was concentrated under reduced pressure. The residue was directly purified by Combiflash (SiO2) with 0-70% EtOAc/hexane gradient elution to give (3R)-3-cyclopentyl-3-[4-(7-[2-(trimethylsilyl)ethoxy]methyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]propanal ((R)-38, 184.1 mg, 219.8 mg theoretical, 83.8% yield) as a pale yellow viscous oil. For (R)-38: C23H33N5O2Si (MW, 439.63), LCMS (EI) m/e 440 (M++H). was added The resulting reaction mixture the reaction mixture was concentrated under reduced pressure The residue was directly purified by Combiflash (SiO2) with 0-70% EtOAc/hexane gradient elution

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

Procedure: A solution of (2E)-3-cyclopentylacrylaldehyde (28, 345 mg, 2.50 mmol, 5.0 equiv), (2R)-2-bis[3,5-bis(trifluoromethyl)phenyl][(triethylsilyl)oxy]methylpyrrolidine ((R)-35, 16 mg, 0.025 mmol, 0.05 equiv) and 4-nitrobenzoic acid (4.3 mg, 0.025 mmol, 0.05 equiv) in anhydrous chloroform (CHCl3, 2.0 mL, 25 mmol) was stirred at room temperature for 10 min before [4-(1H-pyrazol-4-yl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl]methyl pivalate (5, 0.150 g, 0.50 mmol) was added. The resulting reaction mixture was stirred at room temperature for 23 h. After LCMS showed that the reaction was deemed complete, the reaction mixture was concentrated under reduced pressure. The residue was directly purified by Combiflash with 0-80% EtOAc/hexane gradient elution to afford (1R)-(4-(1-(1-cyclopentyl-3-oxopropyl)-1H-pyrazol-4-yl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl)methyl pivalate ((R)-37, 169 mg, 211.8 mg theoretical, 80% yield) as a pale yellow foam. For (R)-37: C23H29N5O3 (MW, 423.51), LCMS (EI) m/e 424 (M++H). was added The resulting reaction mixture the reaction mixture was concentrated under reduced pressure The residue was directly purified by Combiflash with 0-80% EtOAc/hexane gradient elution

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

Procedure: To a stirred suspension of triphenylphosphoranylidene)acetaldehyde (27, 62.75 g, 200.0 mmol, 1.0 equiv) in anhydrous benzene (400 mL, 4476 mmol) was added cyclopentanecarbaldehyde (26, 21.36 mL, 200.0 mmol) at room temperature. The resulting reaction mixture was then heated at 80° C. for 16 h. When TLC and HPLC showed that the reaction was deemed complete, the reaction mixture was concentrated under reduced pressure. The residue was then directly purified by Combiflash (SiO2) with 0-10% EtOAc/hexane gradient elution to afford (2E)-3-cyclopentylacrylaldehyde (28, 14.4 g, 24.84 g theoretical, 58% yield) as a yellow oil. For 28: 1H NMR (DMSO-d6, 400 MHz) δ ppm 1H NMR (CDCl3, 400 MHz) δ 9.49 (d, 1H, J=7.8 Hz), 6.82 (dd, 1H, J=15.6, 7.8 Hz), 6.08 (dd, 1H, J=15.6, 8.0 Hz), 2.72 (m, 1H), 1.89 (m, 2H), 1.67 (m, 4H), 1.44 (m, 2H); C8H12O (MW, 124.18) LCMS (EI) m/e 125 (M++H). The resulting reaction mixture the reaction mixture was concentrated under reduced pressure The residue was then directly purified by Combiflash (SiO2) with 0-10% EtOAc/hexane gradient elution

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

Procedure: A solution of (2E)-3-cyclopentylacrylaldehyde (28, 654 mg, 5.0 mmol, 5.0 equiv), (2R)-2-(bis[3,5-bis(trifluoromethyl)phenyl][tert-butyl(dimethyl)silyl]oxymethyl)pyrrolidine ((R)-35, 64 mg, 0.10 mmol, 0.10 equiv) and 4-nitrobenzoic acid (17 mg, 0.10 mmol, 0.10 equiv) in anhydrous toluene (4.0 mL, 38 mmol) was stirred at rt for 10 min, then cooled to 0° C. before 4-bromo-1H-pyrazole (39, 148 mg, 1.0 mmol) was then added. The resulting reaction mixture was stirred at 0° C. for 22 h. When LCMS showed the reaction was deemed complete, the reaction mixture was concentrated under reduced pressure. The residue was directly purified by CombiFlash (SiO2) with 0-30% EtOAc/hexane gradient elution to give (3R)-3-(4-bromo-1H-pyrazol-1-yl)-3-cyclopentylpropanal ((R)-40, 230.5 mg, 271.2 mg theoretical, 85% yield) as a pale yellow viscous oil. For (R)-40: C11H15BrN2O (MW, 271.15), LCMS (EI) m/e 271/273 (M++H). was then added The resulting reaction mixture the reaction mixture was concentrated under reduced pressure The residue was directly purified by CombiFlash (SiO2) with 0-30% EtOAc/hexane gradient elution

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

Procedure: A solution of (2E)-3-cyclopentylacrylaldehyde (28, 654 mg, 5.0 mmol, 5.0 equiv), (2R)-2-(bis[3,5-bis(trifluoromethyl)phenyl][tert-butyl(dimethyl)silyl]oxymethyl)pyrrolidine ((R)-35, 64 mg, 0.10 mmol, 0.10 equiv) and 4-nitrobenzoic acid (17 mg, 0.10 mmol, 0.10 equiv) in anhydrous toluene (4.0 mL, 38 mmol) was stirred at rt for 10 min, then cooled to 0° C. before 4-bromo-1H-pyrazole (39, 148 mg, 1.0 mmol) was then added. The resulting reaction mixture was stirred at 0° C. for 22 h. When LCMS showed the reaction was deemed complete, the reaction mixture was concentrated under reduced pressure. The residue was directly purified by CombiFlash (SiO2) with 0-30% EtOAc/hexane gradient elution to give (3R)-3-(4-bromo-1H-pyrazol-1-yl)-3-cyclopentylpropanal ((R)-40, 230.5 mg, 271.2 mg theoretical, 85% yield) as a pale yellow viscous oil. For (R)-40: C11H15BrN2O (MW, 271.15), LCMS (EI) m/e 271/273 (M++H). was then added The resulting reaction mixture the reaction mixture was concentrated under reduced pressure The residue was directly purified by CombiFlash (SiO2) with 0-30% EtOAc/hexane gradient elution

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

Procedure: A solution of (2E)-3-cyclopentylacrylaldehyde (28, 327 mg, 2.50 mmol, 5.0 equiv), (2R)-2-bis[3,5-bis(trifluoromethyl)phenyl][(triethylsilyl)oxy]methylpyrrolidine ((R)-35, 32 mg, 0.050 mmol, 0.10 equiv) and 4-nitrobenzoic acid (8.5 mg, 0.050 mmol, 0.10 equiv) in anhydrous toluene (5.0 mL, 47 mmol) was stirred at room temperature for 10 min before 4-(1H-pyrazol-4-yl)-7-[2-(trimethylsilyl)ethoxy]methyl-7H-pyrrolo[2,3-d]pyrimidine (17, 158 mg, 0.50 mmol) was added. The resulting reaction mixture was stirred at room temperature for 24 h. When LCMS showed that the reaction was deemed complete, the reaction mixture was concentrated under reduced pressure. The residue was directly purified by Combiflash (SiO2) with 0-70% EtOAc/hexane gradient elution to give (3R)-3-cyclopentyl-3-[4-(7-[2-(trimethylsilyl)ethoxy]methyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]propanal ((R)-38, 184.1 mg, 219.8 mg theoretical, 83.8% yield) as a pale yellow viscous oil. For (R)-38: C23H33N5O2Si (MW, 439.63), LCMS (EI) m/e 440 (M++H). was added The resulting reaction mixture the reaction mixture was concentrated under reduced pressure The residue was directly purified by Combiflash (SiO2) with 0-70% EtOAc/hexane gradient elution

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

Procedure: A solution of (2E)-3-cyclopentylacrylaldehyde (28, 345 mg, 2.50 mmol, 5.0 equiv), (2R)-2-bis[3,5-bis(trifluoromethyl)phenyl][(triethylsilyl)oxy]methylpyrrolidine ((R)-35, 16 mg, 0.025 mmol, 0.05 equiv) and 4-nitrobenzoic acid (4.3 mg, 0.025 mmol, 0.05 equiv) in anhydrous chloroform (CHCl3, 2.0 mL, 25 mmol) was stirred at room temperature for 10 min before [4-(1H-pyrazol-4-yl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl]methyl pivalate (5, 0.150 g, 0.50 mmol) was added. The resulting reaction mixture was stirred at room temperature for 23 h. After LCMS showed that the reaction was deemed complete, the reaction mixture was concentrated under reduced pressure. The residue was directly purified by Combiflash with 0-80% EtOAc/hexane gradient elution to afford (1R)-(4-(1-(1-cyclopentyl-3-oxopropyl)-1H-pyrazol-4-yl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl)methyl pivalate ((R)-37, 169 mg, 211.8 mg theoretical, 80% yield) as a pale yellow foam. For (R)-37: C23H29N5O3 (MW, 423.51), LCMS (EI) m/e 424 (M++H). was added The resulting reaction mixture the reaction mixture was concentrated under reduced pressure The residue was directly purified by Combiflash with 0-80% EtOAc/hexane gradient elution