Specific deuterium labelling, combined with 13C-NMR spectroscopy, has been used to study the course of the photocyclodehydrogenetions leading to hexa-, hepta-, octa- and nonahelicene. The case of heptahelicene is a good illustration of the scope and limitations of this technique in this particular field.
特定的
氘标记,结合13 C-NMR光谱,已用于研究导致六,七,八和壬二烯的光环脱氢过程。庚二烯的情况很好地说明了该技术在该特定领域中的范围和局限性。