The photochemistry of 5-diazo-10,11-dihydrodibenzo[a,d]diazocycloheptene (DDBC) and 9-diazoanthrone (DAN) were studied by ultrafast time resolved techniques. The excited states of these diazo compounds were observed by UV-Vis spectroscopy and were found to decay in 300 fs. The diazo excited state decays led to the appearance and first direct observation of singlet 5-diazo-10,11-dihydrodibenzo[a...

Rhodium-, copper- and iridium-catalyzed reactions of the (13)C-labelled diazo carbonyl substrates 18* and 19* were performed. Results obtained from copper- and iridium-catalyzed reactions of the (13)C-labelled α-diazo β-keto ester 19* indicate that either or both of these reactions do not proceed via a free oxonium ylide but instead follow a competing non-ylide route that delivers apparent [2,3...

The synthesis and characterization of highly photosensitive coatings containing a diazo-based crosslinker that exhibits high photoreactivity in the near-visible UV toward sunlight is present. Nitrophenyl diazo ester (nitroPEDAz) moieties are incorporated into polymer chains via free radical polymerization generate upon irradiation carbenes, which undergo CH insertion-based crosslinking (CHic) ...

Abstract Biomimetic modularization and function-oriented synthesis of structurally diversified natural product-like macrocycles in a step-economical fashion is highly desirable. Inspired by marine furanocembranoids, herein, we synthesize diverse alkenes substituted furan-embedded macrolactams via modular biomimetic assembly strategy. The success this the development crucial Pd-catalyzed carbene...