Solution-state nuclear magnetic resonance (NMR) spectroscopy is the classical NMR spectroscopy approach used for molecular structure determination, where the experimental sample is studied while ...

1H NMR titrn. and x-ray diffraction anal. revealed that [Ru(bipy)3] ... One striking feature of the box-in-box complex is its ability to host various 1,4-disubstituted benzene derivatives inside as a ...

2,6-Disubstituted dihydropyrans are a common feature in many bioactive polyketides, including the anticancer marine polyketide laulimalide. While much of the uncharacterized biosynthetic pathway for ...

RESULTS AND DISCUSSION Chemistry. Final compounds listed in Table I were synthesized using the sequence of reactions depicted in Figure 1.In the first step, compound I derivatives were prepared via ...

The chemical structures of the new compounds were elucidated by means of NMR (COSY, HSQC, HMBC and NOESY) and HRMS spectral ... (d, J 8.6, 2H), suggested the existence of a para-disubstituted benzene ...

Johnson & Johnson said Wednesday that it is recalling five of its sunscreen products after some samples were found to contain low levels of benzene, a chemical that can cause cancer with repeated ...

IN view of the projected celebration of the centenary of Faraday's discovery of benzene in 1825, it is important that any doubt concerning his priority should be dispelled. The standard work on ...