Chemical composition of planet building blocks as predicted by stellar population synthesis

Synthesis of Functionalized Aryl-vinyl Ethers as Building Blocks and Auxiliaries in Organic Synthesis

5- hydroxyisoquinoline undergoes a smooth reaction with alkyl propiolates in the presence of triphenylphosphine (15 mol%) to produce the corresponding (E)-alkyl 3-(isoquinolin-5-yloxy) acrylate in good yields. When the reaction was performed by 2-methyl 4-hydroxyquinoline and 3-nitro 4-hydroxypyridine, similar aryl vinyl ethers were obtained.

Alkoxyallenes as building blocks for organic synthesis.

Alkoxyallenes are unusually versatile C3 building blocks in organic synthesis. Hence this tutorial review summarizes the most important transformations, including subsequent reactions and their applications in the synthesis of relevant compounds, e.g. natural products. The reactivity patterns involved and the synthons derived from alkoxyallenes are presented. Often alkoxyallenes can serve as su...

The “ Building Blocks ” of Stellar Halos

The stellar halos of galaxies encode their accretion histories. In particular, the median metallicity of a halo is determined primarily by the mass of the most massive accreted object. We use hydrodynamical cosmological simulations from the APOSTLE project to study the connection between the stellar mass, the metallicity distribution, and the stellar age distribution of a halo and the identity ...

synthesis of functionalized aryl-vinyl ethers as building blocks and auxiliaries in organic synthesis

Stellar population synthesis diagnostics

A quantitative method is presented to compare observed and synthetic colour-magnitude diagrams (CMDs). The method is based on a χ merit function for a point (ci,mi) in the observed CMD, which has a corresponding point in the simulated CMD within nσ(ci,mi) of the error ellipse. The χ merit function is then combined with the Poisson merit function of the points for which no corresponding point wa...