Yao, Tu; Xu, Pengfei; Xu, Xin published the artcile< Scandium complexes containing β-diketiminato ligands with pendant phosphanyl groups: competition between Sc/γ-C [4 + 2] cycloaddition and Sc/P frustrated Lewis pair reactions>, Formula: C11H13NS, the main research area is scandium diketiminato pendant phosphine cycloaddition frustrated Lewis pair reactivity; crystal structure scandium diketiminate phosphine chelate enolate preparation; polymerization catalyst frustrated Lewis pair scandium phosphino diketiminate.
Three cationic Sc aryloxide complexes, i.e., [LScOAr]+[B(C6F5)4]- (Ar = 2,6-tBu2C6H3; L = CH3C(2,6-iPr2C6H3N)C(R)CMe(N(CH2)nCH2PPh2); 6a: n = 1, R = H; 6b: n = 1, R = CH3; 6c: n = 2, R = C6H5CH2), were prepared by a three-step synthetic route. The reactivities of tridentate NNP ligand supported Sc complexes 6 toward various unsaturated substrates were studied. Treatment of 6a with nonconjugated small mols. such as Ph isocyanates, Ph isothiocyanate, and benzaldehyde gave Sc/γ-C [4 + 2] cycloaddition products because of nucleophilic reactivity at the β-diketiminato γ-C, with retention of Sc···P interactions. Analogous Sc/γ-C [4 + 2] cycloaddition reactions occurred for complex 6b with Ph isocyanate and Ph isothiocyanate. Complex 6c, with a bulky benzyl substituent at the γ position of the β-diketiminato ligand, showed typical Sc/P frustrated Lewis pair (FLP) reactivity toward Ph isocyanate to give a 1,2-addition product. Complex 6c was efficient in the polymerization of γ-methyl-α-methylene-γ-butyrolactone (MMBL). The corresponding initiating species, which was formed by Sc/P FLP-type 1,4-addition, was isolated.
Dalton Transactions published new progress about Crystal structure. 19241-24-8 belongs to class esters-buliding-blocks, and the molecular formula is C11H13NS, Formula: C11H13NS.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics