Fig. 2: Syntheses of cyclo[8]phenoxathiins 1 and 2 through a cyclization-followed-by-bridging strategy. | Nature Communications

Fig. 2: Syntheses of cyclo[8]phenoxathiins 1 and 2 through a cyclization-followed-by-bridging strategy.

From: Heteroatom-bridged molecular belts as containers

Fig. 2

Conditions: (i) Cs2CO3, CuI, N,N-dimethylglycine, N,N-dimethylacetamide, 150 °C for 48 h; (ii) CF3SO3H, 80 °C for 48 h, then pyridine/H2O, 105 °C for 15 h. Substituent groups: n-Bu n-butyl, Et ethyl.

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