Fe-Catalyzed One-Pot Synthesis of 1,3-Di- and 1,3,5-Trisubstituted Pyrazoles from Hydrazones and Vicinal Diols
作者:Niranjan Panda、Ashis Kumar Jena
DOI:10.1021/jo301770k
日期:2012.10.19
An iron-catalyzed route for the regioselectivesynthesis of 1,3- and 1,3,5-substituted pyrazolesfrom the reaction of diarylhydrazones and vicinal diols has been developed. This method was found to be practical with wide substrate scope.
Structural Organization of Dibromodiazadienes in the Crystal and Identification of Br···O Halogen Bonding Involving the Nitro Group
作者:Valentine G. Nenajdenko、Namiq G. Shikhaliyev、Abel M. Maharramov、Gulnar T. Atakishiyeva、Aytan A. Niyazova、Naila A. Mammadova、Alexander S. Novikov、Ivan V. Buslov、Victor N. Khrustalev、Alexander G. Tskhovrebov
DOI:10.3390/molecules27165110
日期:——
Nitro functionalized dibromodiazadiene dyes were prepared and fully characterized including X-ray single crystal analysis. Electron deficient dibromodiazadienes were found to be able to act as donors of halogen bonding (XB), while the nitrogroup acted as an acceptor of the XB. Depending on the substituents, the Br···O XB competed with other weak interactions, and for some of the dyes, they even outcompeted