Cyclopentadienyl derivatives of the transition metals as catalysts for the reaction of alkylmagnesium halides with alkyl halides

1967 ◽  
Vol 16 (4) ◽  
pp. 932-932 ◽  
Author(s):  
L. I. Zakharkin
Keyword(s):  
Transition Metals ◽  
Alkyl Halides ◽  
Derivatives Of

Carbonyl halides of the Group VI transition metals. XI. Dithiocyanatocarbonyl derivatives of molybdenum and tungsten(II)

1968 ◽  
Vol 21 (6) ◽  
pp. 1435 ◽  
Author(s):  
R Colton ◽  
GR Scollary
Keyword(s):  
Transition Metal ◽  
Transition Metals ◽  
Ammonium Chloride ◽  
Pure State ◽  
Ammonium Thiocyanate ◽  
Donor Ligands ◽  
Group Vi ◽  
Derivatives Of ◽  
And Tungsten

Reaction of ammonium thiocyanate with dihalocarbonyls of molybdenum and tungsten(11) leads to the elimination of ammonium chloride and the formation of a dithiocyanatocarbonyl complex of the transition metal. Although the thiocyanatocarbonyls themselves have not been isolated in a pure state, a number of substituted derivatives with phosphorus donor ligands have been prepared and characterized. In general these complexes are less stable than the corresponding carbonyl halide derivatives.

Organometalloidal derivatives of the transition metals

1992 ◽  
Vol 430 (3) ◽  
pp. 273-286 ◽  
Author(s):  
Antonio Guerrero ◽  
Jacobo Gómez-Lara ◽  
Jorge Cervantes ◽  
Luis Velasco ◽  
Hemant Sharma ◽  
...  
Keyword(s):  
Transition Metals ◽  
Derivatives Of

ChemInform Abstract: NEW METHOD FOR SYNTHESIZING METALLOORGANIC DERIVATIVES OF TRANSITION METALS IN THE LOWEST DEGREES OF OXIDATION

1978 ◽  
Vol 9 (4) ◽  
Author(s):  
S. I. BEILIN ◽  
S. B. GOL'SHTEIN ◽  
B. A. DOLGOPLOSK ◽  
A. M. KRAPIVIN ◽  
E. I. TINYAKOVA ◽  
...  
Keyword(s):  
Transition Metals ◽  
New Method ◽  
Derivatives Of

scholarly journals CHEMISTRY AND SYNTHESIS OF SOME DIHYDRO-2H-l,4-BENZOTHIAZINE DERIVATIVES

1966 ◽  
Vol 44 (11) ◽  
pp. 1247-1258 ◽  
Author(s):  
Raj Nandan Prasad ◽  
Karin Tietje
Keyword(s):  
Alkyl Halides ◽  
Reduction Product ◽  
Alkyl Derivatives ◽  
Reaction Proceeds ◽  
Thiazine Ring ◽  
Derivatives Of ◽  
Compound Xviii ◽  
Acyl Derivatives

The formation of 3-oxo-3,4-dihydro-2H-1,4-benzothiazine (IIIa) by cyclization of alkyl 2-haloacetamidophenyl sulfides (I) was investigated; it is proposed that the reaction proceeds via a six-membered sulfonium halide. The preparation of 4-alkyl derivatives of IIIa and of 4-alkyl and 4-acyl derivatives of its reduction product 3,4-dihydro-2H-1,4-benzothiazine (Va) is described. Acylation of Va was shown to proceed without opening of the thiazine ring. Preparation of the O-benzoyl, N-benzoyl, and O,N-dibenzoyl derivatives of 2-(β-hydroxyethyl-mercapto)aniline (VIII) has permitted clarification of the confusion in the literature with respect to the derivatives of Va and VIII. Compound XVIII, the 1,1-dioxide of IIIa, undergoes C-alkylation at the 2-position when treated with alkyl halides, rather than O-alkylation as previously suggested.

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