Synthetic Studies of Aldazinate and Ketazinate Derivatives of Aluminium

1985 ◽  
Vol 15 (3) ◽  
pp. 309-319 ◽  
Author(s):  
K. K. Chaturvedi ◽  
R. V. Singh ◽  
J. P. Tandon
Keyword(s):  
Synthetic Studies ◽  
Derivatives Of

Synthetic Studies and Structural Aspects of some Metallacyclic Derivatives of Titanium (IV) - Better Precursors for Titania

2012 ◽  
Vol 584 ◽  
pp. 411-414 ◽  
Author(s):  
Madhvesh Pathak ◽  
Blassan Samuel ◽  
Kiran Tummalapalli ◽  
Prasanth Vuppalapati Giri ◽  
Rakesh Bohra ◽  
...  
Keyword(s):  
High Yield ◽  
Chemical Analyses ◽  
Molar Ratios ◽  
Octahedral Environment ◽  
Physico Chemical ◽  
Synthetic Studies ◽  
Derivatives Of ◽  
Structural Aspects

Titanium(IV) complexes of the type [(acac)2Ti(O-G-O] and [(acac)2Ti(OCH2CH2SH)2] {where G = (CH2)2, CH2CH(CH3), CH2CH(C2H5), CH(CH3)CH(CH3) have been synthesized in high yield by the interaction of the precursor [(acac)2Ti( OR)2] {where R = Pri , Et} with a variety of glycols and thioglycols in 1:1 and 1:2 molar ratios in refluxing benzene under anhydrous condition yield heteroleptic derivatives. On the basis of physico-chemical analyses, a cis-octahedral environment around Ti (IV) is proposed.

Synthetic studies on threonines. The preparation of protected derivatives of d-allo- and l-allo-threonine for peptide synthesis

Tetrahedron ◽  
1997 ◽  
Vol 53 (9) ◽  
pp. 3369-3382 ◽  
Author(s):  
Paul Lloyd-Williams ◽  
Agustí Sánchez ◽  
Natàlia Carulla ◽  
Teresa Ochoa ◽  
Ernest Giralt
Keyword(s):  
Peptide Synthesis ◽  
Synthetic Studies ◽  
Derivatives Of

Synthetic studies of hydrazine and guanidine: derivatives of 5-pyrazoles

1968 ◽  
Vol 46 (7) ◽  
pp. 1079-1091 ◽  
Author(s):  
Joseph Zauhar ◽  
Benoit F. Ladouceur
Keyword(s):  
Hydrazine Hydrate ◽  
Dimethyl Formamide ◽  
Condensation Products ◽  
Guanidine Derivatives ◽  
Synthetic Studies ◽  
Derivatives Of ◽  
Related Compounds ◽  
Reaction Schemes

The reactions of several substituted 5-chloropyrazoles with hydrazine hydrate and guanidine, respectively, were investigated in ethanol and dimethyl formamide media. In certain cases, only SN2 reactions occurred, while in others the 5-hydrazino- and 5-guanidopyrazoles reacted still further to yield related compounds with two pyrazole rings. On the basis of the intermediates and the different condensation products isolated, reaction schemes are proposed for the reactions discussed.

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