Cu(OAc)_(2)-Mediated Synthesis of Fullerodihydropyridine-3-ones via the Reaction of[60]Fullerene with β-Substituted Ethylamines in the Absence or Presence of Arylacetaldehydes

A series of unreported fullerodihydropyridine-3-ones were synthesized as a new family of fullerene derivatives in moderate to good yields by a simple one-step reaction of[60]fullerene with cheap and readily available β-substituted ethylamines in the absence or presence of arylacetaldehydes under the assistance of Cu(OAc)_(2).The in situ generation of arylacetaldehydes by the C—N bond cleavage of arylethylamines avoided their complex synthesis in advance and realized the preparation of fullerodihydropyridine-3-ones with structural and functional diversities,which may have promising applications in perovskite solar cells to improve the performance of photovoltaic devices due to the existence of a largeπ-conjugated system on the dihydropyridine-3-one ring.

Synthesis of naphthalene derivatives through inexpensive BF_3·Et_2O-catalyzed annulation reaction of arylacetaldehydes with arylalkynes

An inexpensive BF3·Et20-catalyzed annulation reaction of arylacetaldehydes with arylalkynes has been developed. Various substituted phenylacetaldehydes and phenylacetylenes can undergo this reaction, producing corresponding α-aryl substituted naphthalene derivatives. Use of inexpensive and readily available BF3·Et20 catalyst constitutes the most attractive advantage of this transformation.