9-Anthracenecarboxamide labeled 2'-deoxyuridines were synthesized and their photophysical properties were examined. These oligonucleonucleotide probes are capable of detecting adenine base on a target DNA sequence. It was also found that 2-anthracene based oligonucleotide probe is more efficient than the corresponding 9-anthracene based oligonucleotide in the application for DNA chip based SNP detection, due
Compounds of the formula: ##STR1## where R.sup.1 and R.sup.2 are various substituents and X is a bridge having a chain of 3 atoms, including N, are made by internal Diels-Alder reaction of alkynyl-substituted anthracenes. The compounds are useful as inhibitors of free radical vinyl polymerization.
[EN] HIGH-EFFICIENCY LOW-TOXICITY ANTI-CANCER COMPOUND SYNTHESIZED BY AUTOCATALYSIS IN CELLS AND LIVING BODIES AND SYNTHESIS METHOD FOR ANTI-CANCER COMPOUND<br/>[FR] COMPOSÉ ANTICANCÉREUX À FAIBLE TOXICITÉ ET À EFFICACITÉ ÉLEVÉE SYNTHÉTISÉ PAR AUTOCATALYSE DANS DES CELLULES ET DES CORPS VIVANTS ET PROCÉDÉ DE SYNTHÈSE D'UN COMPOSÉ ANTICANCÉREUX<br/>[ZH] 细胞及活体内自催化合成的高效低毒抗癌化合物及其合成方法
Vibrational activation. 2. Acceleration of bond-making reactions by solvent viscosity as a model for enzymic catalysis. The Claisen rearrangement and the Diels-Alder reaction
作者:Raymond A. Firestone、Mark A. Vitale
DOI:10.1021/jo00323a037
日期:1981.5
Acceleration of Bimolecular Reactions by Solvent Viscosity
作者:Kevin A. Swiss、Raymond A. Firestone
DOI:10.1021/jp991066n
日期:1999.7.1
We report the first example of acceleration of a bimolecular reaction by increased solvent viscosity. In a series of hydrocarbon solvents of graded viscosity, the rates of two cycloadditions, the Diels-Alder dimerization of cyclopentadiene and the 1,3-dipolar cycloaddition of diphenyldiazomethane with ethyl phenylpropiolate, rise with increasing viscosity to about 1 cP and then fall thereafter. We interpret this rise as viscosity-induced acceleration up to similar to 1 cP, which cannot be accounted for by current kinetic theory. Several examples from the literature are reinterpreted in these terms, providing further support for our concept.