Results 41 to 50 of about 1,769 (121)

Chemical Investigation of Coculus Hlrsutus (Linn) Diels

open access: yes, 1962
Chemical investigation of Cocculus hirsulus affords an essential oil, β-sitosterol, ginnol, an inositol deriva­tive, and two alkaloids characterised as picrates.
S. N. Hirwe, J. R. Merchant, R. M. Naik
core   +1 more source

A NEW OCCURRENCE OF dl-METHYLISOPELLETIERINE

open access: yes, 1949
An investigation of Sedum sarmentosum Bunge has shown that this plant contains two liquid alkaloids which give rise to crystalline picrates. One of these bases proved to be dl-methylisopelletierine, identical with a synthetic specimen.
Léo Marion, Marcel Chaput
core   +1 more source

Heterocyclic derivatives of phosphoric and phosphorothioic esters Communication 7. Reactions of dialkyl phosphorochloridates and phosphorochloridothioates with carbazole [PDF]

open access: yes, 1966
By the reaction of diethyl and diisopropyl phosphorochloridates with the potassium derivative of carbazole in acetonitrile solution diethyl and diisopropyl carbazol-9-ylphosphonates were obtained. The picrates of these amido esters were prepared.
Arbuzov B., Zoroastrova V.
core  

The synthesis of new N2S2-macrocyclic schiff base ligands and investigation of their ion extraction capability from aqueous media

open access: yes, 2006
WOS: 000235411800012Two new macrocyclic Schiff bases, (5) and (7), containing nitrogen-sulfur donor atoms were designed and synthesized by reaction of a,a' bis(o-aminophenylthio)-1,2-xylene with glyoxal and phthaldialdehyde, respectively.
Ocak, U, Gokce, P, Alp, H, Ocak, M
core   +1 more source

Phosphoric and phosphorothioic esters containing heterocyclic groups - Cmmunication 4. Reaction of phosphorochloridic and phosphoro-chloridothioic compounds with 2-aminopyridine [PDF]

open access: yes, 1961
1. Reaction of phosphorochloridic esters with 2-aminopyridine gave some phosphoramidic esters, and the picrates of these were isolated. 2. In the thermal decomposition of these amido esters alkylation products of 2-aminopyridine were isolated. 3.
Osipova M., Arbuzov B., Zoroastrova V.
core   +1 more source

Evaluation of a (E,E)-dioxime containing two 15-membered dioxatrithiamacrocycles and its mononuclear Ni(II) complex as Ag+ extractants

open access: yes, 2006
WOS: 000241035400011A macrocyclic vic-dioxime (1) and its mononuclear Ni(II) complex (2) were studied as extractant. The aqueous solutions of Ag+, Mn2+, Pb2+, Ni2+, Cu2+, Cd2+, and Zn2+ picrates were used for extraction experiments.
Ozdemir, Mustafa   +3 more
core   +1 more source

Heterocyclic derivatives of phosphoric and phosphorothioic esters Communication 7. Reactions of dialkyl phosphorochloridates and phosphorochloridothioates with carbazole

open access: yes, 2020
By the reaction of diethyl and diisopropyl phosphorochloridates with the potassium derivative of carbazole in acetonitrile solution diethyl and diisopropyl carbazol-9-ylphosphonates were obtained. The picrates of these amido esters were prepared.
Arbuzov B., Zoroastrova V.
core  

Synthesis and binding character of ether-ester-ethyleneurea podands and macrocycles-synthetic nactin analogs

open access: yes, 1992
The ether-ester macrocycles and podands containing one or two ethyleneurea oxygen(s) as ligating site(s), selectively bind Sr2+ picrate over Li+, Na+, K+, Tl+, Mg2+ and Ca2+ picrates.
Harjit Singh   +5 more
core   +1 more source

Synthesis, characterization, and thermal study complexes of lanthanide picrates hydrated with glycine

open access: yes, 2016
Os complexos de picratos de lantanídeos com a glicina foram sintetizados e caracterizados. As análises de carbono, hidrogênio, nitrogênio e dados da análise térmica sugeriram a fórmula geral Ln(pic)3.2Gly.xH2O (Ln = La - Lu, Y; pic = picrato; Gly ...
Martins, Tereza da Silva
core   +1 more source

Complexes between lanthanide picrates and N,N-dimethylacetamide (DMA): synthesis, characterization, spectroscopic studies and thermal behavior

open access: yes, 2009
Nesta tese são descritos as preparações e caracterizações dos compostos de picratos de Ln (III) com o ligante N,N - Dimetilacetamida (DMA). Apresentaram a seguinte estequiometria: Ln(pic)3.3DMA, Ln = La(III) - Lu(III) e Y(III).
Melo, Carlos Vital Paixão de
core   +1 more source

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