In search for increased reactivity in strain-promoted azide alkyne cycloadditions (SPAAC), the synthesis of new and more reactive cyclooctynes is of pivotal importance. To identify cyclooctynes with enhanced reactivity, without loss of stability, the synthesis and kinetic analysis of new dibenzoazacyclooctyne (DIBAC) analogues were conducted. Starting from iodobenzyl alcohol analogues and ortho...

Thermal rearrangement of 7,7-dichloro-[a,c]-dibenzo-[4,1,0]-bicycloheptane (1) to 5,6-dichloro-5Hdibenzo-[a,c]-cycloheptene (2) was studied in the solid phase and in solvents with different polarities. Thefirst-order constants at various temperatures for the rearrangement process were evaluated from theabsorption time data. The activation parameters for this rearrangement were obtained from the...

For any metric space $X$, finite subset spaces of $X$ provide a sequence isometric embeddings $X=X(1)\subset X(2)\subset\cdots$. The existence Lipschitz retractions $r_n\colon X(n)\to X(n-1)$ depends on the geometry in subtle way. Such are known to exist when is an Hadamard or finite-dimensional normed space. But even these cases it was unknown whether $\{r_n\}$ can be uniformly Lipschitz. We g...

The ability of free electrons to drift long distances at high velocities in pure liquid argon under an applied electric field has been exploited for the past forty years implement detectors with increasingly large volumes energy physics research. In this paper, we summarize electron attachment rate constants as a function external common impurities LArTPC data from literature. We further provid...