Fig. 6: Control experiments. | Nature Communications

Fig. 6: Control experiments.

From: Catalytic transformation of carbon dioxide into seven-membered heterocycles and their domino transformation into bicyclic oxazolidinones

Fig. 6

a Use of 1,3-alkyne diols furnishing 6 M acyl carbonate 30. b Thermal stability check on seven-membered carbonate 3a. c Utilization of a different O-protecting group in the 5MCC precursor. d Attempted thermal activation of the pendant ketimine to force the domino synthesis of 17. e Attempted synthesis of a (5 + 5) bicyclic oxazolidinone from 31.

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