3169-72-0Relevant articles and documents
Distance-Dependent Attractive and Repulsive Interactions of Bulky Alkyl Groups
Hwang, Jungwun,Li, Ping,Smith, Mark D.,Shimizu, Ken D.
supporting information, p. 8086 - 8089 (2016/09/13)
The stabilizing and destabilizing effects of alkyl groups on an aromatic stacking interaction were experimentally measured in solution. The size (Me, Et, iPr, and tBu) and position (meta and para) of the alkyl groups were varied in a molecular balance mod
Chemoselective arylation of phenols with bromo-nitroarenes: Synthesis of nitro-biaryl-ols and their conversion into benzofurans and carbazoles
Kumar, Sangit,Kumar, Amit,Yadav, Abhimanyu,Verma, Ajay,Jana, Sadhan,Sattar, Moh.,Kumar, Shailesh,Prasad, Ch. Durga
supporting information, p. 9481 - 9484 (2014/08/18)
A series of electron withdrawing or donating group substituted phenols were chemoselectively arylated with various substituted bromo-nitroarenes using KOtBu at room temperature via an SNAr pathway. The synthesis of natural alkaloids (carbazoles), dibenzofurans, and a biaryl-indole was achieved from the synthesized nitro-biaryl-ols. This journal is the Partner Organisations 2014.
Palladium supported on zinc ferrite: An efficient catalyst for ligand free C-C and C-O cross coupling reactions
Singh, Abhilash S.,Shendage, Suresh S.,Nagarkar, Jayashree M.
, p. 6319 - 6323 (2013/11/06)
An efficient superparamagnetic Pd-ZnFe2O4 solid catalyst has been synthesized by loading Pd(0) species on zinc ferrite nanoparticles. Sonogashira cross couplings between terminal alkynes and aryl halides were achieved in the absence of any Cu co-catalyst. A Heck-Matsuda coupling reaction of structurally different aryldiazonium tetrafluoroborate substrates was preceded at 40 C in water. Cyanation of aryl halides was successfully done using K4[Fe(CN)6] as the cyanide source over Pd-ZnFe2O4. The catalyst was also employed for Ullmann type cross coupling reactions. Excellent yield of the products, reusability, and uncomplicated work-up make this catalyst efficient for C-C and C-O coupling reactions. Good yield of products, easy separation, and negligible leaching of Pd from the catalyst surface confirm the true heterogeneity in these catalytic reactions.