Autor: Kotadiya, V. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Acid-Promoted Synthesis of Imidazolyl-Pyrazole Derivatives via a Multicomponent Reaction Using Ultra Sound Irradiation
Autorzy:: Baria, B.
Viradiya, D.
Kotadiya, V.
Kakadiya, R.
Shah, A.
Powiązania:: https://bibliotekanauki.pl/articles/412490.pdf
Data publikacji:: 2014
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Imidazole
ultrasound irradiation
Imidazolyl-Pyrazole
Benzil
Opis:: Some new imidazolyl pyrazole derivatives have been synthesized using benzil, ammonium acetate, and heterocyclic aldehyde in ethanol and acetic acid under ultra sound irradiation. The obtained products using this approach are having high purity and good in yield. By conducting the reactions in ethanol, the solid products were precipitated out and could be isolated simply by filtration. The synthesized compounds were characterized by various analytical techniques such as 1H and 13C NMR and further supported by mass spectroscopy.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2014, 11, 3; 277-283
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Highly efficient and eco-friendly one-pot synthesis of penta substitute pyrrole derivatives under catalyst-free conditions
Autorzy:: Viradiya, D. J.
Baria, B. H.
Kakadiya, R.
Kotadiya, V. C.
Shah, A.
Powiązania:: https://bibliotekanauki.pl/articles/412605.pdf
Data publikacji:: 2014
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: one-pot synthesis
penta-substituted pyrrole derivatives
multi-component reactions
Opis:: An eco-friendly and efficient one-pot synthesis of penta-substituted pyrrole derivatives via a four-component reaction of maldrum’s acid, arylglyoxal monohydrate, dimethyl but-2-yne-dioate and amines under catalyst-free conditions in an environmentally friendly medium is described. The simple experimental procedure, catalyst-free reaction conditions, short period of conversion, and excellent yields are the advantages of the present method. Good chemical yields have been achieved without the need for chromatography and recrystallization or other purification methods.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2014, 11, 3; 257-264
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: PEG mediated eco-friendly one pot sunthesis of benzylamine coumarin derivatives using multicomponent reactant
Autorzy:: Viradiya, D. J.
Kotadiya, V. C
Khunt, M. D.
Baria, B. H.
Bhoya, U. C.
Powiązania:: https://bibliotekanauki.pl/articles/412545.pdf
Data publikacji:: 2014
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: one pot reaction
benzylamine coumarin derivative
green synthesis
PEG-400
Opis:: A green resourceful, eco-friendly and facile protocol was developed for the synthesis of benzylamine coumarin derivatives by the reaction of 4-hydroxy coumarin, secondary amine and aromatic aldehyde in the presence of PEG400 as a solvent as well as catalyst at room temperature. A wide range of functional groups were tolerated in the developed protocol. The structures of all the synthesized compounds were confirmed by 1H NMR, IR, MASS and Elemental Analysis. The target molecules were obtained in good to excellent yield applying this method.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2014, 11, 2; 177-184
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Easy, Simplistic and Green Synthesis of Various Benzimidazole and Benzoxazole Derivatives Using PEG400 as a Green Solvent
Autorzy:: Khunt, M. D.
Kotadiya, V. C.
Viradiya, D. J.
Baria, B. H.
Bhoya, U. C.
Powiązania:: https://bibliotekanauki.pl/articles/411999.pdf
Data publikacji:: 2014
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: PEG-400
Benzimidazole
Benzoxazole
Green synthesis
Opis:: An improved environmentally benign procedure for the synthesis of various benzimidazole and benzoxazole derivatives using green solvent PEG400. We have optimized the reaction condition and it was found that PEG400 was believed to be best as compared to PEG200, PEG600 and PEG800 at 80 to 85 °C. This method provides a novel route for the synthesis of benzimidazole and benzoxazole derivatives. The main attractive features of this process are a mild reaction conditions, easy workup procedure and good to excellent yield. The structures of all the synthesized compounds were confirmed by 1H NMR, IR, MASS and Elemental Analysis.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2014, 6; 61-68
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Novel conversion of 4-aminoquinolines to new tricyclic (R,S)-3-methylazeto[3,2-c] quinolin-2(2aH)-ones and versatile one step synthesis of N-(quinolin-4-yl) carbamates from 4-aminoquinolines
Autorzy:: Kotadiya, V. C.
Viradiya, D. J.
Baria, B. H.
Kanzariya, J. S.
Kakadiya, R.
Shah, A.
Powiązania:: https://bibliotekanauki.pl/articles/412269.pdf
Data publikacji:: 2014
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: quinolin
carbamates
azeto-quinolinone
aminoquinolines
Opis:: Reaction of 4-aminoquinolines with 4-nitrophenyl chloroformate have resulted in finding a novel transformation of 4-aminoquinolines to tricyclic (R,S)-3-methylazeto[3,2-c]quinolin-2(2aH)-ones. The structure of azeto-quinolinone was determined via spectroscopic and chemical methods. Various alcohols were used as nucleophiles to open the 1-azetinone ring to give the corresponding N-(quinolin-4-yl)carbamates in good yields. We also found a new and versatile one step synthesis of N-(quinolin-4-yl)carbamates by reacting 4-aminoquinolines with alkyl chloroformates in the presence of anhyd K2CO3 in acetonitrile.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2014, 11, 3; 265-276
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

Artykuł

Informacja