Fig. 3: Substrate scope of alcohols and PAs for alcoholysis. | Nature Communications

Fig. 3: Substrate scope of alcohols and PAs for alcoholysis.

From: Sustainable recycling of polyamides via C–N bond cleavage facilitated by methyl tosylate under mild conditions

Fig. 3

Reaction conditions: the mixture of PA (1 mmol relative to the molecular weight of the monomer), TsOMe (1.5 equiv.) and alcohol (3.0 mL) was heated at 140 °C for 24 h. Conversions and selectivities were determined by 1H NMR in DMSO-d6 with 1,3,5-trimethoxybenzene as an internal standard. All yields are isolated yields. [a] With 1.05 equiv. TsOMe after 24 h; [b] Dried reaction residue was redissolved in methanol and stirred at 50 °C for 30 min before adding Et2O to precipitate the product; [c] Heating for 48 h; [d] Dried reaction residue was redissolved in methanol and stirred at 80 °C for 3 h before adding Et2O to precipitate the product. [e] With 1.2 equiv. TsOMe after 16 h; [f] With 2.1 equiv. TsOMe after 16 h.

Back to article page