Upload File

cheminform abstract: asymmetric catalyses. part 116. triaza and tetraaza macrocycles with chiral...

  • Home
  • Documents
  • ChemInform Abstract: Asymmetric Catalyses. Part 116. Triaza and Tetraaza Macrocycles with Chiral Pendant Arms in the Enantioselective Cyclopropanation
1
1998 stereochemistry stereochemistry (general, optical resolution) O 0030 09 - 033 Asymmetric Catalyses. Part 116. Triaza and Tetraaza Macrocycles with Chiral Pendant Arms in the Enantioselective Cyclopropanation. — The new chiral ligand (S)-tat, synthesized by reaction of cyclam with (S)-propylene oxide and characterized by X-ray analysis, is tested in the Cu-catalyzed cyclopropanation of styrene with ethyl diazoacetate. Chemical yield is satisfactory, but enantioselectivity is rather low in comparison to other known chiral ligands. — (BRUNNER, H.; WINTER, A.; NUBER, B.; Z. Naturforsch., B: Chem. Sci. 52 (1997) 11, 1436-1438; Inst. Anorg. Chem., Univ. Regensburg, D-93053 Regensburg, Germany; DE) 1

Upload: h-brunner

Post on 06-Jun-2016

212 views

Category:

Documents


0 download

Report

TRANSCRIPT

Page 1: ChemInform Abstract: Asymmetric Catalyses. Part 116. Triaza and Tetraaza Macrocycles with Chiral Pendant Arms in the Enantioselective Cyclopropanation

1998 stereochemistry

stereochemistry (general, optical resolution)O 0030

09 - 033Asymmetric Catalyses. Part 116. Triaza and Tetraaza Macrocycleswith Chiral Pendant Arms in the Enantioselective Cyclopropanation.— The new chiral ligand (S)-tat, synthesized by reaction of cyclam with(S)-propylene oxide and characterized by X-ray analysis, is tested in theCu-catalyzed cyclopropanation of styrene with ethyl diazoacetate. Chemicalyield is satisfactory, but enantioselectivity is rather low in comparison to otherknown chiral ligands. — (BRUNNER, H.; WINTER, A.; NUBER, B.; Z.Naturforsch., B: Chem. Sci. 52 (1997) 11, 1436-1438; Inst. Anorg. Chem.,Univ. Regensburg, D-93053 Regensburg, Germany; DE)

1

RESEARCHhARTICLE Neal machine anlaion of chemical ......X et al. J Cheminform Page 6 of 6 fat onenient online miion • thoroh eer reie eeriene reearher in or el rai liation on aetane

Open Access C S :kextractionkandjre-use(ability)k ... · Nguyenjet al. J Cheminform Pagek2kofk9 forthegenerationofcalculatedinformationandidenti-ers.AlthoughtherearesomealternativestoChemDraw,

Filtered circular fingerprints improve either prediction ... · Gütlein and Kramer J Cheminform () DOI 10.1186/s13321-016-0173-z RESEARCH ARTICLE Filtered circular fingerprints improve

Use the Accelerated Stability Assessment (ASAP) to ... Stability... · Dowicil 200 Cosmocil Proclin 300 1-(3-Chloroallyl)-3,5,7-triaza- Polyhexamethylene biguanide (PHMB) 1-azoniaadamantane

Visual analytics in cheminformatics: user-supervised descriptor … · 2017. 8. 23. · Martínez et al. J Cheminform DOI 10.1186/s13321-015-0092-4 SOFTWARE Visual analytics in cheminformatics:

SmartGraph: a network pharmacology investigation platform · 2020. 1. 21. · Zahoránszky‑Kőhalmi et al. J Cheminform Page 5 of 11 isolatethenearestneighbors.ethird,bottom(infor-mation)panelisusedtovisualizeselectednodeandedge

Supporting Information - CaltechAUTHORSauthors.library.caltech.edu/56788/2/jp5127738_si_001.pdf · Supporting Information Visible Light Sensitized CO 2 Activation by the Tetraaza

“Ask Ernö”: a self-learning tool for assignment and prediction ......Castillo et al. J Cheminform DOI 10.1186/s13321-016-0134-6 RESEARCH ARTICLE “Ask Ernö”: a self-learning

The development of models to predict melting and pyrolysis ......Tetko et al. J Cheminform DOI 10.1186/s13321-016-0113-y RESEARCH ARTICLE The development of models to predict melting

GPURFSCREEN: a GPU based virtual screening tool …people.cse.nitc.ac.in/jayaraj/files/gpurfscreen...Jayaraj et al. J Cheminform DOI 10.1186/s13321-016-0124-8 SOFTWARE GPURFSCREEN:

ChemDes: an integrated web-based platform for …...Dong et al. J Cheminform DOI 10.1186/s13321-015-0109-z SOFTWARE ChemDes: an integrated web-based platform for molecular descriptor

RESEARCHARTICLE OpAccess ......Jiangiet al. J Cheminform Pagej2jofj26 playerindrugabsorption,distribution,metabolism, excretion,andtoxicity(ADMET)[5, 6],andhasalsobeen

s3-eu-west-1. · XLS file · Web view · 2015-12-03... (3-methyl-but-2-enyl)-6,7,8,9-tetrahydro-2h-2,7,9a-triaza-benzo[cd]azulene-1-thione db08601 ... 2-[methyl-(5-geranyl-4-methyl-pent-3-enyl)-amino]-ethyl-diphosphate

SYNTHESIS OF 1,3,5-TRIAZA-7-PHOSPHAADAMANTANE …oaktrust.library.tamu.edu/bitstream/handle/1969.1/359/etd-tamu-2004A-CHEM-Ortiz-1.pdfcyclohexene oxide (CHO)) for the formation of

The comparison of automated clustering algorithms for ......Kim et al. J Cheminform 21 21 DOI 10.1186/s13321-017-0208-0 METHODOLOGY The comparison of automated clustering algorithms

SupplementaryMaterials - Science...S3 naturally.Thecrude product wasrepeatedly washed withacetone and filtered toyield the purplepowder. 2.2Synthesisof5,7,11,14-tetraaza-6,13-pentacenequinone(TAPQ)

spyrmsd: symmetry-corrected RMSD calculations in Python · 2020. 8. 31. · Meli and Biggin J Cheminform Page 3 of 7 usingtheNewton-Raphsonmethod[7]startingfromthe initialguess (GA

ChemInform RxnFinder

ChemInform Sheet A4 · 2013. 9. 13. · The ChemInform Reaction Library (CIRX) helps to deal with the enormous number of published reactions as it does not cover all information available

THESE - u-bordeaux.frgrenet.drimm.u-bordeaux1.fr/pdf/2001/PIERRE_CELINE_2001.pdfSalen = N,N’-éthylenebis(salicylideneamine) TACN = triaza-1,4,7-cyclononane tmima = tris[(1-méthylimidazol-2-yl)méthyl]amine

MER: a shell script and annotation server for minimal named ......Couto and Lamurias J Cheminform Page 5 of 10 common,sandswesempiricallysfoundsthatsmostsofsthestwo-charactersmatchesswereserrors

Open Access Programming langage in chemiy: a eie of HTML5 ... · Theien J Cheminform Page 3 of 19 HTML5 econtentweviewontheInternetismadepossiblebya unionofseveraltechnologies,mainlyHypertextMarkup

Database fingerprint (DFP): an approach to represent ... · Fernández‑de Gortari et al. J Cheminform DOI 10.1186/s13321‑017‑0195‑1 PRELIMINARY COMMUNICATION Database fingerprint

RRegrs: an R package for computer-aided model …...Tsiliki et al. J Cheminform DOI 10.1186/s13321-015-0094-2 RESEARCH ARTICLE RRegrs: an R package for computer-aided model selection

Classification System for Solid Supports Used ... - FIZ CHEMIE › fileadmin › user_upload › Cheminform › Spore › _… · FIZ CHEMIE BERLIN - 5 (23) - The remainder of the

Accuracy enhancement in the estimation of molecular ......Chung and Park J Cheminform DOI 10.1186/s13321-015-0106-2 RESEARCH ARTICLE Accuracy enhancement in the estimation of molecular

ChemInform Sheet A4on chemo-, regio-, and stereo-selective reactions. The RefLib database is included with CIRX and provides reactions abstracted from Theilheimer’s Synthetic Methods

FAIR chemical structures in the Journal of Cheminformatics...Schymanski and Bolton J Cheminform Page 2 of 3 the chemical structure content. By improving the - ndability and interoperability,

Supporting Information Efficient Photocatalytic Hydrogen ... · 1 Supporting Information Efficient Photocatalytic Hydrogen Production in Water using a Cobalt(III) Tetraaza-macrocyclic

METHODOLOGY Ecientiterativevirtualscreening with … · 2018. 3. 1. · Ahmed et al. J Cheminform Page4of8 10contain‘high-scoring’ligands.eunassignedbin3is excludedfromtraining.Figure

METHODOLOGY Molecularstructuresenumeration and ......Koch et al. J Cheminform Page5of17 changing4bonds,sinceweaimtondminimaltransfor - mations.Letuscall a 13 and a 24 thetwofixedbonds,with

Structural, Thermodynamic and Equilibrium Study of · 2L' 6. éO A Structural, Thermodynamic and Equilibrium Study of Ghiral Pendant Arm Triaza Macrocyclic Ligand Complexes Towards

PubChem atom environments...Hähnke et al. J Cheminform DOI 10.1186/s13321-015-0076-4 RESEARCH ARTICLE PubChem atom environments Volker D Hähnke, Evan E Bolton* and Stephen H Bryant

Computational methods for prediction of in vitro effects of …...Banerjee et al. J Cheminform DOI 10.1186/s13321-016-0162-2 RESEARCH ARTICLE Computational methods for prediction of

QSAR DataBank repository: open and linked qualitative and … · 2017. 8. 29. · Ruusmann et al. J Cheminform DOI 10.1186/s13321-015-0082-6 DATABASE QSAR DataBank repository: open