52-89-1, Name is H-Cys-OH.HCl, molecular formula is C3H8ClNO2S, Category: amides-buliding-blocks, belongs to amides-buliding-blocks compound, is a common compound. In a patnet, author is Gao, Kai, once mentioned the new application about 52-89-1.
Bimetallic complexes combining an alkali-metal with a lower electropositive metal have demonstrated unique chemical profiles which can be rationalised in terms of chemical cooperativity. Advancing the rational design of these types of complexes, a adaptable method is described to prepare a new family of potassium metal(ates) containing the highly sterically demanding silyl(bis)amide {Ph2Si(NAr*)(2)}(2-) (Ar*=2,6-diisopropylphenyl). Using a sequential deprotonative co-complexation approach, mono-metallation of Ph2Si(NHAr*)(2) (1) is accomplished using potassium alkyl KCH2SiMe3 yielding [{Ph2Si(NHAr*)(NAr*)K}(infinity)] (2), which, in turn, undergoes co-complexation with the relevant M(CH2SiMe3)(2) (M=Mg, Zn, Mn) enabling metallation of the remaining NHAr* group to furnish silylbis(amido) alkyl potassium metal(ates) [{Ph2Si(NAr*)(2)M(THF)(x)(CH2SiMe3)}(-){K(THF)(y)}(+)] (M=Zn, x=0, y=4, 3; M=Mg, x=1, y=3, 4; and M=Mn, x=0, y=4, 5). Reactivity studies of potassium manganate 5 with the amine HMDS(H) (HMDS=N[SiMe3](2) revealed the kinetic activation of the remaining alkyl group on Mn furnishing [K(THF)(2){Ph2Si(NAr*)(2)}Mn(HMDS)] (6). The structures of these bimetallic complexes along with that of the potassium precursor 2 have been established by X-ray crystallographic studies.
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Reference:
Amide – Wikipedia,
,Amide – an overview | ScienceDirect Topics