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Importance of the Presence of Chloride Ions in the First Steps of Palladium‐Catalyzed Nucleophilic Allylic Substitutions

[Pd(?3?C3H5)(??Cl)]2 + 4PPh3 and [(?3?

出版机构:WILEY‐VCH Verlag

刊物名称:European Journal of Inorganic Chemistry

出版时间:2001

ISSN:1434-1948

数据源:报刊文摘

Letter to the Editor: Assignment of selectively 13C-labeled cellopentaose synthesized using an engineered glycosynthase

出版机构:Springer Netherlands

刊物名称:Journal of Biomolecular NMR

出版时间:2001

ISSN:0925-2738

数据源:报刊文摘

Paramagnetism-based versus classical constraints: An analysis of the solution structure of Ca Ln calbindin D9k

The relative importance of paramagnetism-based constraints (i.e. pseudocontact shifts, residual dipolar couplings and nuclear relaxation enhancements) with respect to classical constraints in solution structure determinations of paramagnetic metalloproteins has been addressed.

出版机构:Springer Netherlands

刊物名称:Journal of Biomolecular NMR

出版时间:2001

ISSN:0925-2738

数据源:报刊文摘

A quantitative assessment of glycolipid and protein associated with paired helical filament preparations from Alzheimer's diseased brain

Protease resistant paired helical filaments (prcPHF) can be isolated from the brains of Alzheimer''s diseased patients. A second type of PHF, A68 PHF, may be extracted in soluble form from brain homogenate and induced to form filaments {\it in vitro}.

出版机构:IOS Press

刊物名称:Journal of Alzheimer's Disease

出版时间:2001

ISSN:1387-2877

数据源:报刊文摘

REGRAS: an auxiliary program for pattern recognition and substructure elucidation of monoterpenes

The main purpose of this paper is to present a procedure that utilizes 13C NMR for pattern recognition and substructure elucidation of monoterpenes. By this reason, a novel version of the REGRAS program was developed for the specialist SISTEMAT system.

出版机构:Advanstar Communications, Inc

刊物名称:Spectroscopy

出版时间:2001

ISSN:0712-4813

数据源:报刊文摘

A Methodology Based on NMR Spectroscopy for the Forensic Analysis of Condoms

Both solution and solid state Nuclear Magnetic Resonance (NMR) spectroscopic techniques have been used to determine differences in commercially available condoms.

出版机构:Blackwell Publishing Ltd

刊物名称:Journal of Forensic Sciences

出版时间:2001

ISSN:0022-1198

数据源:报刊文摘

Diastereomeric Quantification by 77Se NMR

The reduction of ?-substituted-?-ketoamides with either NaBH4 or Zn(BH4)2 yielded the respective ?-hydroxyamides in different diastereomeric ratios.

出版机构:Taylor & Francis

刊物名称:Phosphorus, Sulfur, and Silicon and the Related Elements

出版时间:2001

ISSN:1042-6507

数据源:报刊文摘

ACTION DESIMINES SUR LES MONOCHLOROPHOSPHINES: NOUVELLE VOIE D'ACCES A DES CETONES β-PHOSPHORYLEES

The reaction of imines 1 with monochlorophosphines leads to ?-phosphorylketones obtained in the ketonic 2 or enolic forms 2'. The structure of all obtained products is confirmed by NMR and IR spectroscopy.

出版机构:Taylor & Francis

刊物名称:Phosphorus, Sulfur, and Silicon and the Related Elements

出版时间:2001

ISSN:1042-6507

数据源:报刊文摘

High-Resolution Solid-State Nmr: a Versatile Tool for the Study of AI-O-P Clusters

New Al-O-P clusters are presented. They are characterized by single-crystal X-ray diffraction (XRD) and solid-state NMR. High-resolution techniques such as magic angle spinning (MAS) and multiple quantum magic angle spinning (MQ-MAS) are used.

出版机构:Taylor & Francis

刊物名称:Phosphorus, Sulfur, and Silicon and the Related Elements

出版时间:2001

ISSN:1042-6507

数据源:报刊文摘

Reversible Dissociation of (Se6I2)(AsF6)2 in SO2(I)

The dissociation of (Se6I2)(AsF6)2 in SO2(1) has been investigated by 77Se NMR spectroscopy at -80 ?C involving both a natural-abundance sample as well as that containing selenium enriched in the 77Se-isotope (enrichment 92 %).

出版机构:Taylor & Francis

刊物名称:Phosphorus, Sulfur, and Silicon and the Related Elements

出版时间:2001

ISSN:1042-6507

数据源:报刊文摘