Bread in culture Abrahamic religions of Judaism and Christianity. During the Jewish festival of Passover, only unleavened bread is eaten, in commemoration of the flight from slavery in Egypt. The Israelites did not have enough time to allow their bread to rise, and so ate only unleavened bread matzo. In the Christian ritual of the Eucharist, bread is eaten as a sacrament either as a symbolic representation of the body of Christ or, as in the Catholic liturgy, as a real manifestation of the body of Christ. Specific aspects of the ritual itself, including the composition of the bread, vary from denomination to
Meta-selective C–H functionalization copper catalyzed C–H arylation. "Meta"-olefinated biologically important biphenyl, amino acid and Baclofen derivatives have been accessed by remote C–H activation assisted by the "end-on" template. These demonstrate the potential applications of meta-selective C–H functionalization in medicinal chemistry. Meta-selective C–H functionalization "Meta"-selective C–H functionalization refers to the regioselective reaction of a substituted aromatic ring on the C–H bond "meta" to the substituent. Substituted aromatic ring is an important type of substructure in pharmaceuticals and industrial compounds. Thus, synthetic methods towards substituted aromatic rings are always of great interest to chemists. Traditionally, regioselectivity on the aromatic ring is achieved by the electronic