Unsubstituted acenes are intriguing from both experimental and theoretical point of views; however, the preparation and handling of such acenes have been difficult due to their low solubility and high reactivity. Here, unsubstituted nonacene was successfully synthesized in preparative scale.

The development of photoresponsive systems that show multiple-state photochromism has remained a challenging task. We present an alkynylgold(I) complex that features multiple photoinduced color changes, in which the gold(I) center plays an important role in allowing multiple photochromic reactions.

We introduced a feasible way to fabricate enantiopure chiral crystal aggregates directly from their racemic solution and their chirality can be tuned by the molar masses of polymeric additives.

We report the aza-Hock rearrangement of benzyl alcohols with arylsulfonyl hydroxylamines (ArSO2ONHR) in fluorinated alcohols (HFIP or TFE), delivering anilines in good to excellent yields.