924908-01-0Relevant articles and documents
Cu(I) and Ag(I) Complexes with a New Type of Rigid Tridentate N,P,P-Ligand for Thermally Activated Delayed Fluorescence and OLEDs with High External Quantum Efficiency
Klein, Marius,Rau, Nicholas,Wende, Mirco,Sundermeyer, J?rg,Cheng, Gang,Che, Chi-Ming,Schinabeck, Alexander,Yersin, Hartmut
, p. 10365 - 10382 (2020)
Neutral Cu(I) and Ag(I) complexes with a new rigid tridentate N,P,P ligand (dmpzpp, 3,5-dimethyl-1-(2-((2-(di-o-tolyl)phosphanyl) (o-tolyl)-phosphanyl)phenyl)-1H-pyrazole), giving Cu(dmpzpp)Cl 6, Cu(dmpzpp)Br 7, Cu(dmpzpp)I 8, Cu(dmpzpp)SPh 9, and Ag(dmpz
Examining the Impact of Heteroaryl Variants of PAd-DalPhos on Nickel-Catalyzed C(sp2)-N Cross-Couplings
Clark, Jillian S. K.,McGuire, Ryan T.,Lavoie, Christopher M.,Ferguson, Michael J.,Stradiotto, Mark
, p. 167 - 175 (2018/09/25)
We report herein on the synthesis of new heteroaryl analogues of PAd-DalPhos and related bis(di(o-tolyl)phosphino) ancillary ligand variants based on pyridine or thiophene backbone structures, and their application in nickel-catalyzed C(sp2)-N cross-couplings under challenging reaction conditions. The 3,4-disubstituted thiophene-based ancillary ligand ThioPAd-DalPhos (L8) was observed to be particularly effective in the nickel-catalyzed C(sp2)-N cross-coupling of primary alkylamines, and the derived precatalyst (L8)NiCl(o-tolyl) (C2) was found to offer improved performance versus the related PAd-DalPhos-derived precatalyst C1 in such transformations. In using C2, cross-couplings of various primary alkylamines and (hetero)aryl-X electrophiles (X = Cl, Br, OTs) proceeded under unprecedentedly mild reaction conditions (0.25-0.50 mol % Ni), including examples conducted at room temperature. Also reported herein are the results of our combined experimental/DFT computational study directed toward gaining insight regarding the improved catalytic performance of C2 versus C1.
PSiP-pincer type palladium-catalyzed dehydrogenative borylation of alkenes and 1,3-Dienes
Kirai, Naohiro,Iguchi, Shoichiro,Ito, Tatsuyoshi,Takaya, Jun,Iwasawa, Nobuharu
supporting information, p. 784 - 799 (2013/08/23)
Dehydrogenative borylation of alkenes and 1,3-dienes was realized by carrying out the reaction in the presence of bis(pinacolato)diboron (B2pin2) and a catalytic amount of PSiP-pincer palladium complex. This protocol has the following notable features. 1)
P-CHIROGENIC ORGANOPHOSPHORUS COMPOUNDS
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Page/Page column 38; 39, (2013/03/26)
The present invention relates to novel P-chirogenic organophosphorus compounds of general formula (I). The present invention also provides a process for the synthesis of said compounds of formula (I). The present invention also relates to intermediate products of general formulae (II), (III) and (IV), as shown below, which are involved in the synthesis of compounds (I). Further, the invention relates to metal complexes comprising compounds (I) as ligands. The novel compounds and complexes of the present invention are useful in asymmetric catalysis by transition metal complexes or organocatalysis, especially for asymmetric hydrogenation or allylation. Compounds of general formula (I) may useful as agrochemical and therapeutic substances, or as reagents or intermediates for fine chemistry.
Stereoselective synthesis of o-bromo (or iodo)aryl P-chirogenic phosphines based on aryne chemistry
Bayardon, Jerome,Laureano, Hugo,Diemer, Vincent,Dutartre, Mathieu,Das, Utpal,Rousselin, Yoann,Henry, Jean-Christophe,Colobert, Francoise,Leroux, Frederic R.,Juge, Sylvain
experimental part, p. 5759 - 5769 (2012/08/08)
The efficient synthesis of chiral or achiral tertiary phosphines bearing an o-bromo (or iodo)aryl substituent is described. The key step of this synthesis is based on the reaction of a secondary phosphine borane with the 1,2-dibromo (or diiodo)arene, owing to the formation in situ of an aryne species in the presence of n-butyllithium. When P-chirogenic secondary phosphine boranes were used, the corresponding o-halogeno-arylphosphine boranes were obtained without racemization in moderate to good yields and with ee up to 99%. The stereochemistry of the reaction, with complete retention of the configuration at the P atom, has been established by X-ray structures of P-chirogenic o-halogenophenyl phosphine borane complexes. The decomplexation of the borane was easily achieved without racemization using DABCO to obtain the free o-halogeno-arylphosphines in high yields.
Novel palladium complexes employing mixed phosphine phosphonates and phosphine phosphinates as anionic chelating [P,O] ligands
Reisinger, Corinna M.,Nowack, Ruediger J.,Volkmer, Dirk,Rieger, Bernhard
, p. 272 - 278 (2007/10/03)
A route to various substituted phosphine phosphonic acid compounds of the general form Ar2PC6H4PO(OH)2 (Ar = Ph, o-MeC6H4, o-MeOC6H4) has been investigated. These comp
