Our Life in Time of Pandemic

During this time we more than ever realized how important are our spaces and who we spend our daily life with, we changed the way we learned and interacted with people. This is a snippet of my daughter's life during last year, how a first grader lived through online school with the little help of her friends

Unexpected σ Bond Rupture during the Reaction of <i>N</i>‑Methyl-1,2,4-triazoline-3,5-dione with Acenaphthylene and Indene

The reaction of <i>N</i>-methyl-1,2,4-triazoline-3,5-dione (MeTAD) with acenaphthylene and indene leads not only to the formation of the expected [2 + 2] diazetidine cycloadducts but also to unexpected 2:1 adducts of MeTAD with substrate. The structures of the products derived from acenaphthylene were confirmed by X-ray crystallography. A similar distribution of products was afforded from indene. The 2:1 adducts appear to derive from a diradical intermediate, the radical centers of which are strongly stabilized by the bridging urazoyl ring and benzylic delocalization. The triplet states of these diradical intermediates may be trapped via exposure to molecular oxygen to afford oxygen-containing adducts. Computational studies at the (U)­B3LYP/6-31G* level provide additional support for the conclusions of our experimental work