A practical approach to the direct α-methylation of 1,8-naphthyridines under mild reaction conditions has been developed using simple and readily available DMSO as a convenient and environmentally friendly carbon source.
Role of Axial Donors in the Ligand Isomerization Processes of Quadruply Bonded Dimolybdenum(II) Compounds
作者:Sanjib K. Patra、Mukundamurthy Kannan、Kim R. Dunbar、Jitendra K. Bera
DOI:10.1021/ic702298v
日期:2008.3.1
by acetonitrile in 1 and 2 resulted in the cis isomers [Mo2(NP-tz)2(CH3CN)4][OTf]4 (5) and [Mo2(NP-fu)2(CH3CN)4][OTf]4 (6) respectively. The combination of one acetate and two acetonitriles as ancillary ligands, however, yields trans-[Mo2(NP-tz)2(OAc)(CH3CN)2][BF4]3 (7) in the solid state as determined by X-ray crystallography. (1)H NMR spectra of the products are diagnostic of the cis and trans dispositions
Substituted naphthyridines and their herbicidal use
申请人:BASF Aktiengesellschaft
公开号:US05723413A1
公开(公告)日:1998-03-03
Naphthyridines of the formula I ##STR1## where R.sup.1 is an unsubstituted or substituted phenyl ring or heteroaromatic radical and R.sup.2 -R.sup.6 are hydrogen, alkyl, alkenyl, cycloalkyl, haloalkyl, alkoxyalkyl, aminoalkyl, unsubstituted or substituted phenyl, benzyl, unsubstituted or substituted heteroaryl linked via a carbon, cyano, nitro, carboxyl, sulfonylmethyl, alkoxycarbonyl, carbamoyl, alkylcarbamoyl, dialkylcarbamoyl, alkanoyl, benzoyl, it being possible for R.sup.4 and R.sup.5 or R.sup.5 and R.sup.6 to be bonded by a methylene chain or by a CH.dbd.CH--CH.dbd.CH group.
(arene = C6H6, p-iPrC6H4Me) and [(η5-C5Me5)M(μ-Cl)Cl]2 (M = Rh, Ir) with 2-substituted-1,8-naphthyridine ligands, 2-(2-pyridyl)-1,8-naphthyridine (pyNp), 2-(2-thiazolyl)-1,8-naphthyridine (tzNp) and 2-(2-furyl)-1,8-naphthyridine (fuNp), lead to the formation of the mononuclear cationic complexes [(η6-C6H6)Ru(L)Cl]+ L = pyNp (1); tzNp (2); fuNp (3)}, [(η6-p-iPrC6H4Me)Ru(L)Cl]+ L = pyNp (4); tzNp (5); fuNp
的双核配合物的反应[(η 6 -arene)的Ru(μ-Cl)的CL] 2(芳烃= C 6 H ^ 6,p -我PRC 6 ħ 4 Me)中和[(η 5 -C 5我5)M (μ-Cl)Cl] 2(M = Rh,Ir)具有2-取代的1,8-萘啶配体,2-(2-吡啶基)-1,8-萘啶(pyNp),2-(2-噻唑基)-1,8-二氮杂萘(tzNp)和2-(2-呋喃基)-1,8-二氮杂萘(脸书),导致单核阳离子络合物的形成[(η 6 -C 6 H ^ 6)的Ru(L )Cl] + L = pyNp(1); tzNp(2); 脸书(3)},[(η 6 - p -我PRC 6 ħ 4 Me)中的Ru(L)CL] + L = PYNP(4); tzNp(5); 脸书(6)},[(η 5 -C 5我5)的Rh(L)CL] + L = PYNP(7); tzNp(8); 脸书(9)}和[(η 5 -C 5我5)IR(L)CL]