3471-32-7Relevant articles and documents
Synthesis, structure and supramolecular properties of 1,7′-bis[4-(3-methyl-2,3-dihydro-pyrazol-1-yl)phenol]-1,4,7-trioxaheptane
Liu, Bao-Yong,Zhang, Bin,Yang, Xi
, p. 1339 - 1341 (2015)
A new pyrazole derivative, 1,7′-bis[4-(3-methyl-2,3-dihydro-pyrazol-1-yl)phenol]-1,4,7-trioxaheptane with m.f. C24H24N4O5 has been synthesized and the crystal structure was determined by single crystal X-ray diffraction. Interestingly, the title compound are linked by intermolecular O2-H22?N2 hydrogen bonds into a 36 atoms' macro-ring which is further held together into one dimensional beaded chain via C-H?O hydrogen bonding between another phenol oxygen atom and one methylene carbon atom.
Visible-light-mediated phosphonylation reaction: formation of phosphonates from alkyl/arylhydrazines and trialkylphosphites using zinc phthalocyanine
Hosseini-Sarvari, Mona,Koohgard, Mehdi
supporting information, p. 5905 - 5911 (2021/07/12)
In this work, we developed a ligand- and base-free visible-light-mediated protocol for the photoredox syntheses of arylphosphonates and, for the first time, alkyl phosphonates. Zinc phthalocyanine-photocatalyzed Csp2-P and Csp3-P bond formations were efficiently achieved by reacting aryl/alkylhydrazines with trialkylphosphites in the presence of air serving as an abundant oxidant. The reaction conditions tolerated a wide variety of functional groups.
One-Pot Synthesis of Indoles and Pyrazoles via Pd-Catalyzed Couplings/Cyclizations Enabled by Aqueous Micellar Catalysis
Akporji, Nnamdi,Braga, Felipe C.,Gabriel, Christopher M.,Landstrom, Evan B.,Lee, Nicholas R.,Lipshutz, Bruce H.
supporting information, (2020/09/02)
An effective one-pot synthesis of either indoles or pyrazoles can be achieved via Pd-catalyzed aminations followed by subsequent cyclizations facilitated by aqueous micellar catalysis. This new technology includes efficient couplings with low loadings of palladium, a more stable source of the required hydrazine moiety, greater atom economy for the initial coupling, and reduced reaction temperatures, all leading to environmentally responsible processes.