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. 2022 Sep 6;12(18):3088. doi: 10.3390/nano12183088

Table 2.

Catalysis of NPOPs and Ag@NPOPs for the carboxylation of phenylacetylene with CO2 a.

graphic file with name nanomaterials-12-03088-i002.jpg
Entry Catalyst Solvent T/°C Base (Amount/mmol) Time
/h		 Yield/% TOF
/h−1
1 Ag@NPOP-2 DMSO 60 Cs2CO3(0.6) 12 92.1 64.2
2 Ag@NPOP-1 DMSO 60 Cs2CO3(0.6) 12 94.0 90.9
3 NPOP-2 DMSO 60 Cs2CO3(0.6) 12 51.2
4 NPOP-1 DMSO 60 Cs2CO3(0.6) 12 55.4
5 Ag@NPOP-1 b DMSO 60 Cs2CO3(0.6) 12 94.2 36.4
6 Ag@NPOP-1 DMF 60 Cs2CO3(0.6) 12 73.7 71.2
7 Ag@NPOP-1 ACN 60 Cs2CO3(0.6) 12 11.9 11.5
8 Ag@NPOP-1 EtOH 60 Cs2CO3(0.6) 12 3.4 3.3
9 Ag@NPOP-1 DMSO 60 K2CO3(0.6) 12 11.5 11.1
10 Ag@NPOP-1 DMSO 60 DBU(0.6) 12 51.0 49.3
11 Ag@NPOP-1 DMSO 60 NaOH (0.6) 12 4.3 4.2
12 Ag@NPOP-1 DMSO 60 Cs2CO3(0.4) 12 60.8 58.8
13 Ag@NPOP-1 DMSO 60 Cs2CO3(0.2) 12 24.5 23.7
14 Ag@NPOP-1 DMSO 50 Cs2CO3(0.6) 12 65.2 63.0
15 Ag@NPOP-1 DMSO 40 Cs2CO3(0.6) 12 18.0 17.4

Reaction conditions: (a) Phenylacetylene (0.2 mmol), catalyst (2.0 mg), CO2 (balloon), solvent (1.0 mL). The reaction mixture was stirred at 60 °C for 12 h. Yield was calculated by 1H NMR. (b): catalyst, 5.0 mg.