78238-98-9Relevant articles and documents
Linear Relationship between 13C NMR Chemical Shifts and the Bending of sp-Carbon Chains
Kreuzahler, Mathis,Adam, Abdulselam,Haberhauer, Gebhard
, p. 12689 - 12693 (2019)
Polyynes show a strictly linear relationship between the energy impact and the bending of the polyyne chain. The energy, which is necessary to bend the acetylenic chain, decreases with the increasing number of acetylene units. A deviation from linearity i
Synthesis of bridged molecular gyroscopes with closed topologies: Triple one-pot macrocyclization
Commins, Patrick,Nunez, Jose E.,Garcia-Garibay, Miguel A.
experimental part, p. 8355 - 8363 (2011/12/04)
We describe the synthesis and characterization of six bridged molecular gyroscopes with m-alkoxy-substituted trityl stators and dialkynylphenylene rotators. All of the bridged molecular gyroscopes were synthesized convergently to form the phenolic stator-
RADICAL-ANIONS OF AROMATIC COMPOUNDS. V. EFFECT OF THE STRUCTURE OF THE ELECTROPHILE ON THE RATIO OF THE ELECTRON-DONATING AND NUCLEOPHILIC CHARACTERISTICS OF THE BENZOPHENONE RADICAL-ANION IN REACTIONS WITH N,N,N-TRIMETHYLARYLAMMONIUM PERCHLORATES
Selivanov, B. A.,Bil'kis, I. I.,Varand, V. L.,Shteingarts, V. D.
, p. 865 - 877 (2007/10/02)
In reaction with N,N,N-trimethylammonium perchlorates in THF the potassium salt of the benzophenone radical-anion exhibits dual reactivity, acting both as nucleophile (as SN process) and as a one-electron reducing agent (an ET process).The effect of the structure of the aryl fragment of the ammonium salt on the ratio of the rates WET/WSN is determined by the higher sensitivity of the electron transfer rate to the effect of this factor compared with nucleophilic substitution and varies in the following order: p-Methoxyphenyl p-tolyl m-tolyl phenyl m-methoxyphenyl p-biphenylyl m-chlorophenyl 1-naphthyl.I t was found that the structure of the aryl fragment of the ammonium salt has a significant effect on the regioselectivity of the methylation of the benzophenone radical-anion.