报道了范围广泛的磺酰胺负载的4族酰胺,烷基和醇盐配合物的合成,结构和开环聚合(ROP)能力,这些磺酰胺的N-取代基,金属,配位数和几何形状各不相同。Ti(NMe 2)4或Ti(NMe 2)2(O i Pr)2与MeOCH 2 CH 2 N(CH 2 CH 2 NHSO 2 Me)2(12,H 2 N 2 Ms N OMe)或PhCH的反应2 N(CH 2 CH2 NHSO 2 R)2(R = Tol(10,H 2 N 2 Ts N Ph)或Me(11,H 2 N 2 Ms N Ph))提供Ti(N 2 Ms N OMe)(NMe 2)2(18),Ti(N 2 Ts N Ph)(NMe 2)2(19),Ti(N 2 Ms N Ph)(NMe 2)2(20),Ti(N 2 Ms N OMe)(O i Pr)2(21),Ti(N 2 Ts N Ph)(O i Pr)2(22),Ti(N 2 Ms
报道了范围广泛的磺酰胺负载的4族酰胺,烷基和醇盐配合物的合成,结构和开环聚合(ROP)能力,这些磺酰胺的N-取代基,金属,配位数和几何形状各不相同。Ti(NMe 2)4或Ti(NMe 2)2(O i Pr)2与MeOCH 2 CH 2 N(CH 2 CH 2 NHSO 2 Me)2(12,H 2 N 2 Ms N OMe)或PhCH的反应2 N(CH 2 CH2 NHSO 2 R)2(R = Tol(10,H 2 N 2 Ts N Ph)或Me(11,H 2 N 2 Ms N Ph))提供Ti(N 2 Ms N OMe)(NMe 2)2(18),Ti(N 2 Ts N Ph)(NMe 2)2(19),Ti(N 2 Ms N Ph)(NMe 2)2(20),Ti(N 2 Ms N OMe)(O i Pr)2(21),Ti(N 2 Ts N Ph)(O i Pr)2(22),Ti(N 2 Ms
Ligand Variations in New Sulfonamide-Supported Group 4 Ring-Opening Polymerization Catalysts
作者:Andrew D. Schwarz、Katherine R. Herbert、Cristina Paniagua、Philip Mountford
DOI:10.1021/om100508j
日期:2010.9.27
2-C6H10(NSO2Mes)2), and in situ generated isopropoxide initiators derived from 30−32 were investigated for the ROP of ε-caprolactone (ε-CL). The four-coordinate 25 was the most active, forming poly(ε-CL) with a relatively narrow PDI and well-controlled Mn. Compounds22, 23, 25, and 26 and isopropoxides generated in situ from 30−32 were all active for the ROP of rac-lactide. Of these, the initiators based on Zr(N3RN)(CH2SiMe3)
报道了范围广泛的磺酰胺负载的4族酰胺,烷基和醇盐配合物的合成,结构和开环聚合(ROP)能力,这些磺酰胺的N-取代基,金属,配位数和几何形状各不相同。Ti(NMe 2)4或Ti(NMe 2)2(O i Pr)2与MeOCH 2 CH 2 N(CH 2 CH 2 NHSO 2 Me)2(12,H 2 N 2 Ms N OMe)或PhCH的反应2 N(CH 2 CH2 NHSO 2 R)2(R = Tol(10,H 2 N 2 Ts N Ph)或Me(11,H 2 N 2 Ms N Ph))提供Ti(N 2 Ms N OMe)(NMe 2)2(18),Ti(N 2 Ts N Ph)(NMe 2)2(19),Ti(N 2 Ms N Ph)(NMe 2)2(20),Ti(N 2 Ms N OMe)(O i Pr)2(21),Ti(N 2 Ts N Ph)(O i Pr)2(22),Ti(N 2 Ms