is presented. Particular emphasis is placed on the preparation of precursors and target molecules relevant for organic materials, including halogenated cyanoarenes and larger cyanated acenes. The reaction and work‐up protocols are adjusted for the challenges presented by the different substrates and products. Screening results of the initial reaction optimization are given to further facilitate adaptation
Functionalized 4-benzylated pyridines can be efficiently prepared by a transition-metal-freecross-coupling between various benzylic zinc chlorides and substituted 4-cyanopyridines in THF/DMPU under microwave irradiation (40 °C, 0.5–1.5 h). Selective benzylations on polycyano-aromatics have also been achieved under these mild conditions. We also report a novel oxidative nucleophilic substitution of
An luminescent device material which is inexpensive and exhibits excellent durability in the presence of oxygen can be provided using a luminescent silver complex which has an organic multidentate ligand, particularly, a luminescent silver complex wherein the organic multidentate ligand is coordinated to a phosphorus atom, a nitrogen atom, an oxygen atom, a sulfur atom, an arsenic atom, an oxygen anion, a nitrogen anion, or a sulfur anion, or a polymer of the luminescent silver complex.
In the photoreactions of 9,10-dicyanophenanthrene (6) with 1,3-butadiene (7) a novel [3+2]-photocycloaddition at the 9,10-position of the phenanthrene ring of 6 to one of the double bond of 7 and a [2+2]-cycloaddition at the 9,10-position of 6 were found to proceed from the singlet and the triplet excited states of 6, respectively.
Preparation and photochemistry of some tetrazaporphins
作者:E. V. Blackburn、C. J. Timmons
DOI:10.1039/j39700000175
日期:——
pigments gave phenanthrenedicarboximide (VI). The initial oxidation of the magnesium analogue was reversible and the metal-free pigment was also isolated on irradiation of solutions of this pigment. Some tetraphenanthrotetrazaporphin pigments have been synthesised and their structures have been proved by oxidation to give phenanthrenedicarboximide.