Homolytic Alkoxycarbonylation Reactions in Two-phase Systems 3. Introduction of a Single Carboxylic Acid Ester Function into Cyano- or Alkoxycarbonyl Substituted N-Heteroaromatics
HEINISCH, G.;LOTSCH, G., HETEROCYCLES, 26,(1987) N 3, 731-744
作者:HEINISCH, G.、LOTSCH, G.
DOI:——
日期:——
Homolytic Alkoxycarbonylation Reactions in Two-phase Systems 3. Introduction of a Single Carboxylic Acid Ester Function into Cyano- or Alkoxycarbonyl Substituted N-Heteroaromatics
作者:Gottfried Heinisch、Gerhard L嗾sch
DOI:10.3987/r-1987-03-0731
日期:——
Steric and electronic effects on the
<sup>1</sup>
H hyperpolarisation of substituted pyridazines by signal amplification by reversible exchange
作者:Peter J. Rayner、Michael J. Burns、Elizabeth J. Fear、Simon B. Duckett
DOI:10.1002/mrc.5152
日期:2021.12
rapid and cost-effective hyperpolarisation of substituted pyridazines. The 33 substrates investigated cover a range of steric and electronic properties and their capacity to perform highly effective SABRE is assessed. We find the method to be tolerant to a broad range of electron donating and withdrawing groups; however, good sensitivity is evident when steric bulk is added to the 3- and 6-positions of