75258-12-7Relevant articles and documents
Cinnolines and Pyrazolopyridazines. - Novel Synthetic and Mechanistic Aspects of the Richter Reaction
Vasilevsky, Sergei F.,Tretyakov, Eugene V.
, p. 775 - 780 (2007/10/02)
The thermal cyclization of 2-alkynylbenzenediazonium salts 2 known as the Richter reaction and leading, as described in the literature, only to 4-hydroxycinnolines 6 has been studied.A new probable route to these compounds involving intermediate formation
PREPARATION AND NONLINEAR OPTICAL PROPERTY OF POLYDIACETYLENES FROM UNSYMMETRICAL DIPHENYLBUTADIYNES WITH TRIFLUOROMETHYL SUBSTITUENTS
Okada, Shuji,Ohsugi, Minoru,Masaki, Atsushi,Matsuda, Hiro,Takaragi, Shigeru,Nakanishi, Hachiro
, p. 81 - 90 (2007/10/02)
In order to obtain the polydiacetylenes having ?-conjugation between polymer backbone and side chains, many of unsymmetrical diphenylbutadiyne derivatives with trifluoromethyl substituents on one of the phenyl rings have been synthesized.Among them, 1-(3-(methylamino)phenyl)-4-(3,5-bis(trifluoromethyl)phenyl)butadiyne (MADF) was found to be topochemically polymerized with complete conversion into the polymer single crystals.Spectroscopies and X-ray crystal structure analysis revealed that the ?-conjugation of this polymer are more extended than those of the sofar prepared poly(diphenylbutadiyne)s, with smaller dihedral angles between ?-conjugation planes of polymer backbone and phenyl rings.The extended ?-conjugation was also confirmed by larger χ(3) values.