Acetylene gas has been applied as a feedstock under transition-metal catalysis and photo-redox conditions to produce important chemicals including terminal alkynes, fulvenes, and fluorinated styrene compounds. The reaction discovery process was accelerated through the use of “stop-flow” micro-tubing reactors. This reactor prototype was developed by joining elements from both continuous micro-flow and
Asymmetric Pentafulvene Carbometalation-Access to Enantiopure Titanocene Dichlorides of Biological Relevance
作者:Melchior Cini、Tracey D. Bradshaw、Simon Woodward、William Lewis
DOI:10.1002/anie.201508034
日期:2015.11.16
Unprecedented asymmetric copper‐catalyzed addition of ZnEt2 (ZnBu2) to the exocyclic CC bond of pentafulvenes C5H4(CHAr) (Ar=2‐MeOPh and related species) results in enantiomerically enriched (up to 93:7 e.r.) cyclopentadienyl ligands (C5H4CHEtAr; abbreviated CpR). Copper catalyst promotion with both chiral phosphoramidite ligands and a phosphate additive is vital in realizing both acceptable enantioselectivities
前所未有的不对称铜催化将ZnEt 2(Z n Bu 2)添加到五氟醚C 5 H 4(CHAr)(Ar = 2-MeOPh和相关物质)的环外CC键中,导致对映体富集(最多93个) :7 er)环戊二烯基配体(C 5 H 4 CHEtAr;缩写为Cp R)。用手性亚磷酰胺配体和磷酸盐添加剂促进铜催化剂对于实现可接受的对映选择性和反应速率都是至关重要的。已经制备了对映体Cp R 2 TiCl 2络合物。(S,S)异构体在24小时时对胰腺癌,乳腺癌和结肠癌细胞系的活性是其(R,R)对映体的两倍。
[EN] GROUP 3 METAL COMPOUNDS AND USE THEREOF IN THE TREATMENT OF SOLID TUMORS<br/>[FR] COMPOSÉS DE MÉTAL DU GROUPE 3 ET LEUR UTILISATION DANS LE TRAITEMENT DE TUMEURS SOLIDES
申请人:UNIVERSITÀ DEGLI STUDI DI SALERNO
公开号:WO2017191607A1
公开(公告)日:2017-11-09
The present invention relates to the compounds of Formula 1 wherein M is Sc or Y, Hal is CI, Br, F or I R is alkyl with 1 - 4 atoms of C X is CI, Br, F or I or a group such as that shown hereinafter wherein R is alkyl with 1 - 4 atoms of C and the use thereof in the treatment of solid tumors.
The thermal decomposition of fulvene endoperoxides ordinarily proceeds via an allene oxide intermediate affording oxepin-2(3H)-one derivatives. We have now uncovered new, unusual pathways in these decompositions where the presence of a hydroxyl group on the alkyl or aryl attached to the fulvene exocyclic double bond has a profound effect on the fate of the reactive intermediates derived from the unstable
fourth titanocene 3d was elucidated through a DFT calculation. All four titanocenes had their cytotoxicity investigated through preliminary in vitro testing on the LLC-PK (pig kidney epithelial) cell line in order to determine their IC50 values. Titanocenes 3a–d were found to have IC50 values of 97, 159, 88 and 253 μM, respectively. All four titanocene derivatives show significant cytotoxicity improvement