Heterocyclen-synthesen mit 4,4-bis(trifluormethyl)-1,3-diazabuta-1,3-dienen, II [1] spektroskopische untersuchung der isonitril- und dimethoxy-carben-addukte
The present invention relates to metal complexes and to electronic devices, in particular organic electroluminescent devices, comprising these metal complexes.
这项发明涉及金属配合物以及包括这些金属配合物的电子设备,特别是有机电致发光器件。
Copper-Catalyzed Three-Component Synthesis of 3-Aminopyrazoles and 4-Iminopyrimidines via β-Alkynyl-<i>N</i>-sulfonyl Ketenimine Intermediates
作者:Yanpeng Xing、Binyu Cheng、Jing Wang、Ping Lu、Yanguang Wang
DOI:10.1021/ol502302w
日期:2014.9.19
4-iminopyrimidines were efficiently prepared via copper-catalyzedthree-componentreactions of butadiynes, sulfonylazides, and hydrazides or imidamides. The reactions were regioselectively approached via the formation of a β-alkynyl-N-sulfonyl ketenimine intermediate which represented a new and effective 1,3-dielectrophilic equivalent in organic synthesis.
Vanadium-Catalyzed Oxidative C(CO)–C(CO) Bond Cleavage for C–N Bond Formation: One-Pot Domino Transformation of 1,2-Diketones and Amidines into Imides and Amides
作者:Chander Singh Digwal、Upasana Yadav、P. V. Sri Ramya、Sravani Sana、Baijayantimala Swain、Ahmed Kamal
DOI:10.1021/acs.joc.7b00950
日期:2017.7.21
identified that enables their transformation into imides and amides. The reaction proceeds by dual acylation of amidines via oxidative C(CO)–C(CO) bond cleavage of 1,2-diketones to afford N,N′-diaroyl-N-arylbenzamidine intermediates. In the reaction, these intermediates are easily hydrolyzed into imides and amides through vanadium catalysis. This method provides a practical, simple, and mild synthetic
pattern. Thus, dimeric (1c, 1d, and 1u) and tetrameric (1f) aggregates with strong NH···OC hydrogen bonding, as well as polymeric chain structures (1x and 1z) were observed in the solid state. Furthermore, a dimer 1k involving only the amidine subunits, rather than the carbonyl function, was found. Monolayers of molecules 1u and 1ab physisorbed at the liquid/HOPG (high orientated pyrolytic graphite)
Combination of air/moisture/ambient temperature compatible organolithium chemistry with sustainable solvents: selective and efficient synthesis of guanidines and amidines
lithium amides [LiN(H)R] (obtained via an acid–base reaction between n-BuLi and the desired primaryamine) into carbodiimides (R–NCN–R) or nitriles (R–CN) has been studied, for the first time, in 2-MeTHF or CPME as ethereal green solvents, at room temperature and in the absence of a protecting atmosphere (i.e., under air/moisture), reactionconditions that are generally forbidden in the field of highly-reactive