tert-butyl N-[2-[(4-methoxyphenyl)methylamino]ethyl]carbamate

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

Procedure: This compound was made in a manner analogous to that set forth in Step D of Example 5, using 0.2 gram (0.0020 mole) of (oxolan-3-yl)formaldehyde, 0.56 gram (0.0020 mole) of (tert-butoxy)-N-(2-{[(4-methoxyphenyl)methyl]amino}-ethyl)carboxamide (prepared in Step A of Example 9), 0.64 gram (0.0030 mole) of sodium triacetoxyborohydride and 2.5 grams (0.021 mole) of magnesium sulfate in 50 mL of 1,2-dichloroethane. The reaction product was purified with column chromatography on silica gel. Elution was accomplished using a mixture of 1% methanol in methylene chloride as an eluant. Appropriate fractions were combined and concentrated under reduced pressure, yielding 0.59 gram of the subject compound. The NMR spectrum was consistent with the proposed structure. The reaction product was purified with column chromatography on silica gel Elution a mixture of 1% methanol in methylene chloride as an eluant concentrated under reduced pressure

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

Procedure: This compound was also made in a manner analogous to that set forth in Step D of Example 5, and Step A above, using 0.25 gram (0.0017 mole) of (2-chloro-1,3-thiazol-5-yl)formaldehyde, 0.47 gram (0.0017 mole) of (tert-butoxy)-N-(2-{[(4-methoxyphenyl)methyl]amino}ethyl)carboxamide, 0.54 gram (0.0025 mole) of sodium triacetoxyborohydride and 0.40 gram (0.0034 mole) of magnesium sulfate in about 10 mL of 1,2-dichloroethane. The reaction product was purified with column chromatography on silica gel. In a first chromatography, elution was accomplished using mixtures of 2% to 5% methanol in methylene chloride as eluants. In a second chromatography, elution was accomplished using a mixture of 1.5% methanol in methylene chloride as an eluant. Appropriate fractions were combined and concentrated under reduced pressure, yielding 0.48 gram of the subject compound. The NMR spectrum was consistent with the proposed structure. The reaction product was purified with column chromatography on silica gel In a first chromatography, elution In a second chromatography, elution a mixture of 1.5% methanol in methylene chloride as an eluant concentrated under reduced pressure

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

Procedure: This compound was made in a manner analogous to that set forth in Step D of Example 5, using 3.0 grams (0.022 mole) of 4-methoxybenzaldehyde, 3.6 grams (0.022 mole) of N-(2-aminoethyl)(tert-butoxy)carboxamide (known compound), 7.0 grams (0.033 mole) of sodium triacetoxyborohydride and 5.3 grams (0.044 mole) of magnesium sulfate in 30 mL of 1,2-dichloroethane. The reaction product was purified with column chromatography on silica gel. Elution was accomplished using mixtures of 2% to 5% methanol in methylene chloride as eluants. Appropriate fractions were combined and concentrated under reduced pressure, yielding 0.72 gram of the subject compound. The NMR spectrum was consistent with the proposed structure. The reaction was repeated to obtain additional material. The reaction product was purified with column chromatography on silica gel Elution concentrated under reduced pressure

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

Procedure: This compound was made in a manner analogous to that set forth in Step D of Example 5, using 3.0 grams (0.022 mole) of 4-methoxybenzaldehyde, 3.6 grams (0.022 mole) of N-(2-aminoethyl)(tert-butoxy)carboxamide (known compound), 7.0 grams (0.033 mole) of sodium triacetoxyborohydride and 5.3 grams (0.044 mole) of magnesium sulfate in 30 mL of 1,2-dichloroethane. The reaction product was purified with column chromatography on silica gel. Elution was accomplished using mixtures of 2% to 5% methanol in methylene chloride as eluants. Appropriate fractions were combined and concentrated under reduced pressure, yielding 0.72 gram of the subject compound. The NMR spectrum was consistent with the proposed structure. The reaction was repeated to obtain additional material. The reaction product was purified with column chromatography on silica gel Elution concentrated under reduced pressure

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

Procedure: This compound was made in a manner analogous to that set forth in Step D of Example 5, using 0.2 gram (0.0020 mole) of (oxolan-3-yl)formaldehyde, 0.56 gram (0.0020 mole) of (tert-butoxy)-N-(2-{[(4-methoxyphenyl)methyl]amino}-ethyl)carboxamide (prepared in Step A of Example 9), 0.64 gram (0.0030 mole) of sodium triacetoxyborohydride and 2.5 grams (0.021 mole) of magnesium sulfate in 50 mL of 1,2-dichloroethane. The reaction product was purified with column chromatography on silica gel. Elution was accomplished using a mixture of 1% methanol in methylene chloride as an eluant. Appropriate fractions were combined and concentrated under reduced pressure, yielding 0.59 gram of the subject compound. The NMR spectrum was consistent with the proposed structure. The reaction product was purified with column chromatography on silica gel Elution a mixture of 1% methanol in methylene chloride as an eluant concentrated under reduced pressure

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

Procedure: This compound was also made in a manner analogous to that set forth in Step D of Example 5, and Step A above, using 0.25 gram (0.0017 mole) of (2-chloro-1,3-thiazol-5-yl)formaldehyde, 0.47 gram (0.0017 mole) of (tert-butoxy)-N-(2-{[(4-methoxyphenyl)methyl]amino}ethyl)carboxamide, 0.54 gram (0.0025 mole) of sodium triacetoxyborohydride and 0.40 gram (0.0034 mole) of magnesium sulfate in about 10 mL of 1,2-dichloroethane. The reaction product was purified with column chromatography on silica gel. In a first chromatography, elution was accomplished using mixtures of 2% to 5% methanol in methylene chloride as eluants. In a second chromatography, elution was accomplished using a mixture of 1.5% methanol in methylene chloride as an eluant. Appropriate fractions were combined and concentrated under reduced pressure, yielding 0.48 gram of the subject compound. The NMR spectrum was consistent with the proposed structure. The reaction product was purified with column chromatography on silica gel In a first chromatography, elution In a second chromatography, elution a mixture of 1.5% methanol in methylene chloride as an eluant concentrated under reduced pressure

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

Procedure: This compound was made in a manner analogous to that set forth in Step D of Example 5, using 3.0 grams (0.022 mole) of 4-methoxybenzaldehyde, 3.6 grams (0.022 mole) of N-(2-aminoethyl)(tert-butoxy)carboxamide (known compound), 7.0 grams (0.033 mole) of sodium triacetoxyborohydride and 5.3 grams (0.044 mole) of magnesium sulfate in 30 mL of 1,2-dichloroethane. The reaction product was purified with column chromatography on silica gel. Elution was accomplished using mixtures of 2% to 5% methanol in methylene chloride as eluants. Appropriate fractions were combined and concentrated under reduced pressure, yielding 0.72 gram of the subject compound. The NMR spectrum was consistent with the proposed structure. The reaction was repeated to obtain additional material. The reaction product was purified with column chromatography on silica gel Elution concentrated under reduced pressure