N,N-bis(2-hydroxyethyl)acetamide

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

Procedure: 315 g of diethanolamine were dissolved in 500 g of tetrahydrofuran in a round-bottom flask. Then, 310 g of acetic anhydride were slowly added. The temperature was kept below 5° C. with the aid of a cooling bath. When, after the dropwise addition, exothermic heat was no longer detectable, heating was slowly carried out to 100° C. Tetrahydrofuran and acetic acid were removed under vacuum. The temperature was kept below 5° C. with the aid of a cooling bath When, after the dropwise addition exothermic heat heating was slowly carried out to 100° C Tetrahydrofuran and acetic acid were removed under vacuum

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

Procedure: The procedure of Example 1 was followed using N-acetyl diethanolamine (12.3 g, 83.9 mmol), triethylamine (24.0 mL, 167.8 mmol), dry THF (600 mL) and triphosgene (8.3 g, 28.8 mmol). The filtrate was concentrated yielding only oligomeric compounds. The filtrate was concentrated yielding only oligomeric compounds

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

Procedure: 315 g of diethanolamine were dissolved in 500 g of tetrahydrofuran in a round-bottom flask. Then, 310 g of acetic anhydride were slowly added. The temperature was kept below 5° C. with the aid of a cooling bath. When, after the dropwise addition, exothermic heat was no longer detectable, heating was slowly carried out to 100° C. Tetrahydrofuran and acetic acid were removed under vacuum. The temperature was kept below 5° C. with the aid of a cooling bath When, after the dropwise addition exothermic heat heating was slowly carried out to 100° C Tetrahydrofuran and acetic acid were removed under vacuum