2-(aminomethyl)-3,3,5-trimethylcyclopentan-1-amine

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

Procedure: To 5-amino-2,2,4-trimethylcyclopentylmethylamine (127.76 g, 0.819 mol) in methanol (700 ml) was slowly added with stirring ethyl acetoacetate (215.85 g, 1.660 mol) in methanol (700 ml) over 35 minutes, during which the temperature increased from 22° C. to 31° C. The reaction mixture was allowed to stand at 21° C. overnight (17 h). Further methanol was added, and removal of solvent and drying (91°/100 Pa) gave 1-(1-ethoxycarbonyl-2-prop-1-enylamino)-2-(1-ethoxycarbonyl-2-prop-1-enylaminomethyl)-3,3,5-trimethylcyclopentane (EEMTCP, formula shown below) as a clear light yellow pourable viscous oil (296.54 g, 95%) identified by 1H-NMR, 13C-NMR, FT-IR and Raman spectra. increased from 22° C. to 31° C (17 h) removal of solvent drying (91°/100 Pa)

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

Procedure: To 5-amino-2,2,4-trimethylcyclopentylmethylamine (127.76 g, 0.819 mol) in methanol (700 ml) was slowly added with stirring ethyl acetoacetate (215.85 g, 1.660 mol) in methanol (700 ml) over 35 minutes, during which the temperature increased from 22° C. to 31° C. The reaction mixture was allowed to stand at 21° C. overnight (17 h). Further methanol was added, and removal of solvent and drying (91°/100 Pa) gave 1-(1-ethoxycarbonyl-2-prop-1-enylamino)-2-(1-ethoxycarbonyl-2-prop-1-enylaminomethyl)-3,3,5-trimethylcyclopentane (EEMTCP, formula shown below) as a clear light yellow pourable viscous oil (296.54 g, 95%) identified by 1H-NMR, 13C-NMR, FT-IR and Raman spectra. increased from 22° C. to 31° C (17 h) removal of solvent drying (91°/100 Pa)

Conditions: temp:113.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To 5-amino-2,2,4-trimethylcyclopentylmethylamine (127.72 g, 0.819 mol) in xylene (525 ml) at 122° C. was added with stirring 2,2,6-trimethyl-1,3-dioxen-4-one (232.51 g, 1.637 mol) in xylene (525 mol) over 10 minutes, during which the temperature decreased to 104° C. After heating to 113° C. over 5 minutes, vigorous effervescence and distillation of acetone (through a Vigreux column) commenced. Pot temperature was increased to 127° C. over 5 minutes and to 140° C. over a further 30 minutes, with collection of acetone distillate. After cooling to 39° C., dichloromethane was added, and removal of solvent and drying (93° C./100 Pa) gave 1-acetoacetamido-2-acetoacetamidomethyl-3,3,5-trimethylcyclopentane (237.03 g, 89%), (AAMTCP), which was crushed to a light yellow powder, mp 94-114° C. (mixture of stereoisomers), and identified by 1H-NMR, 13C-NMR, FT-IR and Raman spectra. decreased to 104° C vigorous effervescence and distillation of acetone (through a Vigreux column) Pot temperature was increased to 127° C. over 5 minutes and to 140° C. over a further 30 minutes, with collection of acetone distillate After cooling to 39° C. dichloromethane was added removal of solvent drying (93° C./100 Pa)

Conditions: temp:113.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To 5-amino-2,2,4-trimethylcyclopentylmethylamine (127.72 g, 0.819 mol) in xylene (525 ml) at 122° C. was added with stirring 2,2,6-trimethyl-1,3-dioxen-4-one (232.51 g, 1.637 mol) in xylene (525 mol) over 10 minutes, during which the temperature decreased to 104° C. After heating to 113° C. over 5 minutes, vigorous effervescence and distillation of acetone (through a Vigreux column) commenced. Pot temperature was increased to 127° C. over 5 minutes and to 140° C. over a further 30 minutes, with collection of acetone distillate. After cooling to 39° C., dichloromethane was added, and removal of solvent and drying (93° C./100 Pa) gave 1-acetoacetamido-2-acetoacetamidomethyl-3,3,5-trimethylcyclopentane (237.03 g, 89%), (AAMTCP), which was crushed to a light yellow powder, mp 94-114° C. (mixture of stereoisomers), and identified by 1H-NMR, 13C-NMR, FT-IR and Raman spectra. decreased to 104° C vigorous effervescence and distillation of acetone (through a Vigreux column) Pot temperature was increased to 127° C. over 5 minutes and to 140° C. over a further 30 minutes, with collection of acetone distillate After cooling to 39° C. dichloromethane was added removal of solvent drying (93° C./100 Pa)

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

Procedure: To 5-amino-2,2,4-trimethylcyclopentylmethylamine (127.76 g, 0.819 mol) in methanol (700 ml) was slowly added with stirring ethyl acetoacetate (215.85 g, 1.660 mol) in methanol (700 ml) over 35 minutes, during which the temperature increased from 22° C. to 31° C. The reaction mixture was allowed to stand at 21° C. overnight (17 h). Further methanol was added, and removal of solvent and drying (91°/100 Pa) gave 1-(1-ethoxycarbonyl-2-prop-1-enylamino)-2-(1-ethoxycarbonyl-2-prop-1-enylaminomethyl)-3,3,5-trimethylcyclopentane (EEMTCP, formula shown below) as a clear light yellow pourable viscous oil (296.54 g, 95%) identified by 1H-NMR, 13C-NMR, FT-IR and Raman spectra. increased from 22° C. to 31° C (17 h) removal of solvent drying (91°/100 Pa)

Conditions: temp:113.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To 5-amino-2,2,4-trimethylcyclopentylmethylamine (127.72 g, 0.819 mol) in xylene (525 ml) at 122° C. was added with stirring 2,2,6-trimethyl-1,3-dioxen-4-one (232.51 g, 1.637 mol) in xylene (525 mol) over 10 minutes, during which the temperature decreased to 104° C. After heating to 113° C. over 5 minutes, vigorous effervescence and distillation of acetone (through a Vigreux column) commenced. Pot temperature was increased to 127° C. over 5 minutes and to 140° C. over a further 30 minutes, with collection of acetone distillate. After cooling to 39° C., dichloromethane was added, and removal of solvent and drying (93° C./100 Pa) gave 1-acetoacetamido-2-acetoacetamidomethyl-3,3,5-trimethylcyclopentane (237.03 g, 89%), (AAMTCP), which was crushed to a light yellow powder, mp 94-114° C. (mixture of stereoisomers), and identified by 1H-NMR, 13C-NMR, FT-IR and Raman spectra. decreased to 104° C vigorous effervescence and distillation of acetone (through a Vigreux column) Pot temperature was increased to 127° C. over 5 minutes and to 140° C. over a further 30 minutes, with collection of acetone distillate After cooling to 39° C. dichloromethane was added removal of solvent drying (93° C./100 Pa)