摘要:

Die Synthese von Iodglyoxylsäureestern. Spaltung von Tetrahydrofuran und 1,2‐DimethoxyethanEine Serie von Iodglyoxylaten2a – iwird aus Chlorglyoxylaten1a – iund Natriumiodid in Acetonitril dargestellt und durch Tieftemperaturextraktion mit Pentan isoliert. Iodglyoxylsäureester eignen sich zur acylierenden Spaltung von Ethern, z. B. Tetrahydrofuran und 1,2‐Dimet

ISSN:0009-2940    

DOI:10.1002/cber.19841170132

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY

摘要:

Diastereoselektive Addition von (R)‐Methyl‐p‐totyl‐sulfoxid an Benzaldehyd(R)‐Methyl‐p‐tolyl‐sulfoxid (1a) läßt sich nach Umwandlung ins Zinkreagens1cdiastereoselektiv an Benzaldehyd zu2a/2baddieren. Entschwefelung des durch Umkristallisation rein gewonnenen Überschußdiastereomeren2aliefer

ISSN:0009-2940    

DOI:10.1002/cber.19841170133

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY

摘要:

Trifluoromethyl Isocyanide, a Strong π‐Accepting Ligand – Pentacarbonyl(trifluoromethyl isocyanide)chromium and ‐tungstenTrifluoromethyl isocyanide (2) reacts with (CO)5M(THF) (1a,b;a: M = Cr,b: M = W) to form the new complexes (CF3NC)M(CO)5(3a, b). From the vibrational spectra, which resemble those of the hexacarbonyl complexes, it is concluded, that the new ligand is a strong π

ISSN:0009-2940    

DOI:10.1002/cber.19841170134

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY

摘要:

X‐Ray Structure Analysis of Tetraphenylarsonium Tetraazidoaurate(III)The title compound1crystallizes in the tetragonal space groupP4/nwith As and Au in special positions. Four nitrogen atoms surround the Au atom in a square, and the Au(N3)4−anion adopts a whirlwind configuration. The N3−group is asymmetic (N1 – N2 122 pm, N2 – N3 115 pm), typical for covalently bound azid

ISSN:0009-2940    

DOI:10.1002/cber.19841170135

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY

摘要:

Enantioselective Adsorption of Chiral Azo Dyestuffs on Silk and Wool as well as Starch and CelluloseThe racemic azo compounds1or2from diazotisedm‐amino mandelic acid and β‐naphthol could not even slightly be resolved by adsorption on wool as it has been reported. On powdered silk and potato starch2was resolved partly by chromatography. All attempts with the amide3from 1‐phenylethylamine andp‐azobenzenecarboxylic acid have not been successfu

ISSN:0009-2940    

DOI:10.1002/cber.19841170136

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY

ISSN:0009-2940    

DOI:10.1002/cber.19841170101

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY