Name: 1,4-Diethynyl-2,5-dimethoxybenzeneOn October 28, 2014 ,《Natural α-Amino Acid-Functionalized Poly(phenyleneethynylene)s (PPEs): Synthesis and Chiroptical Characterization of Aggregate States》 was published in Macromolecules (Washington, DC, United States). The article was written by Resta, Claudio; Pescitelli, Gennaro; Di Bari, Lorenzo. The article contains the following contents:
The synthesis of several novel poly(phenyleneethynylene)s (PPEs) functionalized with different natural α-amino acids Me esters has been achieved through Cassar-Heck-Sonogashira reaction. Five different derivatives have been prepared varying the nature of the amino acid (Gly, Leu, N-Me Leu, Phe, and Val), and their aggregation behavior has been investigated by means of UV-vis absorption, CD, and fluorescence spectroscopies in different conditions of aggregation. ECD measurements provided unique information about the structural organization of the aggregates dispersed in solution and as thin films. The effects of the nature of the amino acidic moiety, the consequences of chirality, and the role played by intermol. hydrogen bonds have been elucidated. The results came from multiple reactions, including the reaction of 1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6Name: 1,4-Diethynyl-2,5-dimethoxybenzene)
1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6) belongs to ethers.Oxygen is more electronegative than carbon, thus the alpha hydrogens of ethers are more acidic than those of simple hydrocarbons. They are far less acidic than alpha hydrogens of carbonyl groups (such as in ketones or aldehydes), however. Name: 1,4-Diethynyl-2,5-dimethoxybenzene
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem