2 research outputs found
Synthesis of 3‑Iminoindol-2-amines and Cyclic Enaminones via Palladium-Catalyzed Isocyanide Insertion-Cyclization
A palladium-catalyzed
isocyanide insertion-cyclization using low-cost
and readily accessible 2-haloanilines, 2-iodophenylethanones, and
isocyanides for efficient synthesis of 3-iminoindol-2-amine and cyclic
enaminone derivatives has been developed. The method features low-cost
and readily accessible starting materials, reliable scalability, and
bond-forming efficiency as well as simple one-pot operation, which
makes this strategy highly attractive. A reasonable mechanism for
forming 3-iminoindol-2-amine involved double isocyanide insertion/cyclization
process is proposed
Second-Order Nonlinear Optical Properties of Carboranylated Square-Planar Pt(II) Zwitterionic Complexes: One-/Two-Dimensional Difference and Substituent Effect
Zwitterionic
complexes have been the subject of great interest
in the past several decades due to their multifunctional application
in supramolecular chemistry. Herein, a series of internally stable
charge-compensated carboranylated square-planar PtÂ(II) zwitterionic
complexes have been explored by density functional theory aim to assessing
their structures, the first hyperpolarizabilities, first hyperpolarizability
densities, and electronic absorption spectra. It is found that the
first hyperpolarizabilities of two-dimensional (2D) structure complexes
are much larger with respect to the one-dimensional complex. It is
ascribed to the lower transition energy and more obvious charge transfer,
which can be further illustrated by their large amplitude and separate
distribution of first hyperpolarizability density. In addition, the
first hyperpolarizabilities of 2D complexes can be further significantly
modified by introducing electron-donating/withdrawing groups on the
carborane cage. As a consequence, we believe that these 2D zwitterionic
complexes can behave as novel second-order nonlinear optical chromophore
with a promising future