with (S)-t-Bu-phosphinooxazoline Ligands John A. Keith,‡ Douglas C. Behenna,† Justin T. Mohr,† Sandy Ma,† Smaranda C. Marinescu,† Jonas Oxgaard,‡ Brian M. Stoltz,*,† and William A. Goddard, III*,‡ DiVision of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, and Materials and Process Simulation Center (139-74), California Institute of Technology...

A variety of molybdenum or tungsten complexes that contain a tert-butylimido ligand have been prepared. For example, the o-methoxybenzylidene complex W(N-t-Bu)(CH-o-MeOC6H4)(Cl)2(py) was prepared through addition of pyridinium chloride to W(N-t-Bu)2(CH2-o-MeOC6H4)2, while Mo(N-t-Bu)(CH-o-MeOC6H4)(ORF)2(tBuNH2) complexes (ORF = OC6F5 or OC(CF3)3) were prepared through addition of two equivalents...

Este relato de experiência na Biblioteca Universitária da Universidade do Estado Santa Catarina tem por objetivo descrever as atividades desenvolvidas no projeto BU Capacita e mensurar o alcance das capacitações realizadas em 2020 2021. Surge questionamento: Quais foram os reflexos Capacita? Cientes transição paradigmas pelas quais Bibliotecas Universitárias (BUs) seus profissionais se deparara...

The convenient five-coordinate starting materials, Salen((t)Bu)AlCl (Salen((t)Bu) = N,N'-alkylene (or arylene) bis (3,5-di-tert-butyl-2-hydroxybenzylideneamine) (1-4) can be used in a wide range of reactions to form five-coordinate aluminum compounds. Herein, these reagents were used to produce new five-coordinate azides, LAlN(3) (L = Salen((t)Bu) (5), Salpen((t)Bu) (6), and Salomphen((t)Bu) (7...

Rotation, tillage, and variety main effects on grain yield were all significant in 2002. Rice grain yield, over all treatment combinations, averaged 159 bu/acre, which was 22 bu/acre more than in 2001. Grain yields for the two 3-phase rotations were 180 bu/acre for the rice-corn-soybeans rotation and 177 bu/acre for the rice-corn (wheat)soybean rotation. These yields were slightly better than t...

Chapter 1 The attempted syntheses of molybdenum imido alkylidene complexes of the type Mo(NArc,)(CH-t-Bu)[Biphen] and Mo(N-2-CF 3C6H4)(CHCMe 2Ph)[Biphen] (Biphen2 = 3,3'-di-t-butyl-5,5',6,6'-tetramethyl1,1'-biphenyl-2,2'-diolate) from Mo(NArcl)(CH-tBu)(OTf)2(dme) and [Biphen]K2 have sporadically afforded mixtures containing the desired products along with the corresponding amido alkylidyne comp...

Bis(sulfurdiimido)tin compounds of the type R2Sn[(NSN)'Bu]2 [R = Me (2a), Et (2b)] re­ act with triethylborane Et^B by rearrangement and N-ethylation to give the novel aminoborane derivatives R2Sn[N('Bu)SN(Et)BEt2]2 (5a, b), in the same way as "Bu3Sn(NSN)'Bu (1) reacts with Et.̂ B to give "Bu3Sn[N('Bu)SN(Et)BEt2] (4). In contrast, 2c (R = 'Bu) and tris(sulfurdiimido)tin compounds RSn[(NSN)'Bu]3 ...

BACKGROUND Cameroon is endemic for Buruli ulcer (BU) and organised institutional BU control began in 2002. The objective was to describe the evolution, achievements and challenges of the national BU control programme (NBUCP) and to make suggestions for scaling up the programme. METHODS We analysed collated data on BU from 2001 to 2014 and reviewed activity reports NBUCP in Cameroon. Case-dete...