Modification of fulleropyrazolines modulates their cleavage by light
作者:Reida N. Rutte、Thomas B. Parsons、Benjamin G. Davis
DOI:10.1039/c4cc03859b
日期:——
The tuned photocleavage of fulleropyrazolines unveils potential for controlled release of biologically-relevant molecules or payloads.
调节后的富勒烯吡唑烯的光裂解揭示了控制释放生物相关分子或有效荷载的潜力。
Efficient Synthesis of Fully Substituted and Diversely Functionalized Pyrazoles through <i>p</i>‐TSA Catalyzed One‐Pot Condensation of Cyclic <i>β</i>‐Diketones, Arylglyoxals and Arylhydrazones
作者:Arun Dhurey、Subhro Mandal、Animesh Pramanik
DOI:10.1002/ejoc.202300770
日期:2023.10.21
An acid catalyzed one-pot condensation of readily available cyclic β-diketones, arylglyoxals and arylhydrazones produces a library of diverselyfunctionalized pyrazole derivatives in excellent yield under metal-catalyst-free benign conditions.
Photolytic cleavage of the nitrogen-nitrogen single bond in benzaldehyde phenylhydrazones produced aminyl (R2N) and iminyl (R2C=N) radicals. This photochemical property was utilized in the development of hydrazones as photo-induced DNA-cleaving agents. Irradiation with 350 nm UV light of arylhydrazones bearing substituents of various types in a phosphate buffer solution containing the supercoiled circular phiX174 RFI DNA at pH 6.0 resulted in single-strand cleavage of DNA. Attachment of the electron-donating OMe group to arylhydrazones increased their DNA-cleaving activity. Results from systematic studies indicate that both the aminyl and the iminyl radicals possessed DNA-cleaving ability. (C) 2004 Elsevier Ltd. All rights reserved.
ARAKI, SHUKI;AOYAMA, NAOMITSU;BUTSUGAN, YASUO, BULL. CHEM. SOC. JAP., 62,(1989) N, C. 1612-1620
作者:ARAKI, SHUKI、AOYAMA, NAOMITSU、BUTSUGAN, YASUO
DOI:——
日期:——
Synthesis and Structural Study of Dichlorodiazadienes Derived from 4-Methoxybenzaldehyde
作者:N. G. Shikhaliyev、U. F. Askerova、S. H. Mukhtarova、A. A. Niyazova、P. V. Dorovatovskii、V. N. Khrustalev、V. G. Nenajdenko
DOI:10.1134/s1070428020020013
日期:2020.2
hydrazine fragment, can be involved in the reaction. Further evidence in favor of a radical mechanism of this transformation was obtained using a 3,5-bis(trifluoromethyl)phenylhydrazine derivative. The structural features of the synthesized products were studied by X-ray diffraction analysis.