3127-08-0Relevant articles and documents
Synthesis of first representatives of 46-membered P,N,O-containing cyclophanes and their transition metal complexes
Nikolaeva, Yu. A.,Balueva,Ignat'eva,Musina,Karasik
, p. 1319 - 1324 (2016)
A condensation of phenyl- or l-menthylphosphine with formaldehyde and 4,4′-bis-(4′-aminophenoxy)biphenyl proceeding as a covalent self-assembly gave rise to the first representatives of 46-membered P,N,O-containing cyclophanes, namely, 13,17,83,87-tetra-R-3,6,10,13-tetraoxa-1,8(1,5)-di(1,5-diaza-3,7-diphosphacyclooctana)-2,4,5,7,9,11,12,14(1,4)-octabenzenacyclotetradecaphanes (R = Ph (1), l-Ment (2)). The cage macrocyclic tetraphosphine 2 reacted with (cyclooctadiene)dichloroplatinum(ii) and -palladium(ii), as well as with (tetrahydrofuran)pentacarbonyltungsten(0) with the formation of binuclear complexes, in which the metal atoms are coordinated to 1,5-diaza-3,7-diphosphacyclooctane fragments by the P,P-chelate mode.
Synthesis of aminomethylphosphines with triazaadamantane fragments
Kuznetsov,Balueva,Serova,Nikonov
, p. 899 - 902 (2001)
The reaction of (hydroxymethyl)diphenylphosphine with 7-amino-1,3,5-triazaadamantane, followed by ready oxidation of the initially formed aminomethylphosphine gave diphenyl[(1,3,5-triazaadamantan-7-yl)aminomethyl]phosphine oxide. The reactions of bis(hydr
Catalyst Pendent-Base Effects on Cyclization of Alkynyl Amines
Stubbs, James M.,Chapple, Devon E.,Boyle, Paul D.,Blacquiere, Johanna M.
, p. 3694 - 3702 (2018/08/06)
A family of [CpRu(PP)(MeCN)]PF6 complexes (2 a–e and 4) were prepared in which the bis-phosphine ligand contains a pendent tertiary amine in the second-coordination sphere. 2 a–e contain PPh2NR′2 ligands with two amine groups as the pendent base. Complex 4 has the PPh2NPh1 ligand with only one pendent amine. The catalytic performance of 2 a–e and 4 were assessed in the cyclization of 2-ethynyl aniline and 2-ethynylbenzyl alcohol. It was revealed that the positioning of the pendent amine near the metal active site is essential for high catalyst performance. A comparison of PPh2NR′2 catalysts (2 a–e) showed minimal difference in performance as a function of pendent amine basicity. Rather, only a threshold basicity – in which the pendent amine was more basic than the substrate – was required for high performance.
Light-driven hydrogen production from aqueous solutions based on a new Dubois-type nickel catalyst
Zhou,Yang,Huang
, p. 7471 - 7475 (2017/04/04)
In this work, we report a new photocatalytic system that links multifunctional semiconductor nanocrystals with emerging water-soluble molecular catalysts made of earth-abundant elements for H2 generation [Ni(P2RN2R′)2(BF4)2]4-, R = Ph, R′ = [PhSO3]- (NiS). This noble metal free hybrid exhibits remarkable catalytic activity with a turnover number of 511 for H2 production and a photon-to-H2 conversion efficiency of 12.5%. The mechanistic insight into such high efficiency in this photocatalytic system was examined using a combination of steady-state emission and time-resolved absorption spectroscopy.