2-methoxy-2-methylpropanamide

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

Procedure: A −78° C. solution of 2-methoxy-2-methylpropanamide (0.25 g, 2.134 mmol) in THF (6 mL) was treated drop-wise with lithium bis(trimethylsilyl)amide (1M in THF, 2.77 mL, 2.77 mmol) stirred for 0.5 h. A solution of isopropenyl chloroformate (0.257 mL, 2.347 mmol) in THF (1 mL) was added drop-wise and the mixture was stirred at −78° C. for 1 h. The mixture was warmed to RT, stirred for 1 h, quenched with satd. NaHCO3, extracted with EtOAc (3×) and the combined organics were dried over Na2SO4 and concentrated to dryness to afford prop-1-en-2-yl (2-methoxy-2-methylpropanoyl)carbamate (440 mg, 102%). MS (ESI) m/z: 202.1 (M+H+). the mixture was stirred at −78° C. for 1 h stirred for 1 h quenched with satd NaHCO3, extracted with EtOAc (3×) the combined organics were dried over Na2SO4 concentrated to dryness

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

Procedure: A −78° C. solution of 2-methoxy-2-methylpropanamide (0.25 g, 2.134 mmol) in THF (6 mL) was treated drop-wise with lithium bis(trimethylsilyl)amide (1M in THF, 2.77 mL, 2.77 mmol) stirred for 0.5 h. A solution of isopropenyl chloroformate (0.257 mL, 2.347 mmol) in THF (1 mL) was added drop-wise and the mixture was stirred at −78° C. for 1 h. The mixture was warmed to RT, stirred for 1 h, quenched with satd. NaHCO3, extracted with EtOAc (3×) and the combined organics were dried over Na2SO4 and concentrated to dryness to afford prop-1-en-2-yl (2-methoxy-2-methylpropanoyl)carbamate (440 mg, 102%). MS (ESI) m/z: 202.1 (M+H+). the mixture was stirred at −78° C. for 1 h stirred for 1 h quenched with satd NaHCO3, extracted with EtOAc (3×) the combined organics were dried over Na2SO4 concentrated to dryness

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

Procedure: A −78° C. solution of 2-methoxy-2-methylpropanamide (0.25 g, 2.134 mmol) in THF (6 mL) was treated drop-wise with lithium bis(trimethylsilyl)amide (1M in THF, 2.77 mL, 2.77 mmol) stirred for 0.5 h. A solution of isopropenyl chloroformate (0.257 mL, 2.347 mmol) in THF (1 mL) was added drop-wise and the mixture was stirred at −78° C. for 1 h. The mixture was warmed to RT, stirred for 1 h, quenched with satd. NaHCO3, extracted with EtOAc (3×) and the combined organics were dried over Na2SO4 and concentrated to dryness to afford prop-1-en-2-yl (2-methoxy-2-methylpropanoyl)carbamate (440 mg, 102%). MS (ESI) m/z: 202.1 (M+H+). the mixture was stirred at −78° C. for 1 h stirred for 1 h quenched with satd NaHCO3, extracted with EtOAc (3×) the combined organics were dried over Na2SO4 concentrated to dryness

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

Procedure: A −78° C. solution of 2-methoxy-2-methylpropanamide (0.25 g, 2.134 mmol) in THF (6 mL) was treated drop-wise with lithium bis(trimethylsilyl)amide (1M in THF, 2.77 mL, 2.77 mmol) stirred for 0.5 h. A solution of isopropenyl chloroformate (0.257 mL, 2.347 mmol) in THF (1 mL) was added drop-wise and the mixture was stirred at −78° C. for 1 h. The mixture was warmed to RT, stirred for 1 h, quenched with satd. NaHCO3, extracted with EtOAc (3×) and the combined organics were dried over Na2SO4 and concentrated to dryness to afford prop-1-en-2-yl (2-methoxy-2-methylpropanoyl)carbamate (440 mg, 102%). MS (ESI) m/z: 202.1 (M+H+). the mixture was stirred at −78° C. for 1 h stirred for 1 h quenched with satd NaHCO3, extracted with EtOAc (3×) the combined organics were dried over Na2SO4 concentrated to dryness