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1.
Rhodium Enalcarbenoids: Direct Synthesis of Indoles by Rhodium(II)‐Catalyzed [4+2] Benzannulation of Pyrroles
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Sudam Ganpat Dawande Vinaykumar Kanchupalli Jagadeesh Kalepu Haribabu Chennamsetti Bapurao Sudam Lad Dr. Sreenivas Katukojvala 《Angewandte Chemie (International ed. in English)》2014,53(16):4076-4080
Disclosed herein is the design of an unprecedented electrophilic rhodium enalcarbenoid which results from rhodium(II)‐catalyzed decomposition of a new class of enaldiazo compounds. The synthetic utility of these enalcarbenoids has been successfully demonstrated in the first transition‐metal‐catalyzed [4+2] benzannulation of pyrroles, thus leading to substituted indoles. The new benzannulation has been applied to the efficient synthesis of the natural product leiocarpone as well as a potent adipocyte fatty‐acid binding protein inhibitor. 相似文献
2.
K. S. Adhav M. V. Dawande R. S. Thakare R. B. Raut 《International Journal of Theoretical Physics》2011,50(2):339-348
Bianchi type-III cosmological model of universe filled with dark energy from a wet dark fluid (WDF) in presence and absence
of magnetic field is investigated in general theory of relativity. We assume that F
12 is the only non-vanishing component of F
ij
. We obtain exact solutions to the field equations using the condition that expansion is proportional to the shear scalar
i.e. (B=C
n
). The physical behavior of the model is discussed with and without magnetic field. We conclude that universe model do not
approach isotropy through the evolution of the universe. 相似文献
3.
We consider the problem of designing quality-of-service (QoS)-constrained routes for a set of multicast groups in an all-optical network. We present an integer goal programming formulation with the objectives of minimizing the cost of the multicast solution and minimizing the maximum link load of the network. Based on the structural properties of the problem, we develop a variable-fixing heuristic which is easy to implement, requires a modest amount of CPU time, and provides high-quality solutions. An extensive computational study is presented to justify our claims 相似文献
4.
Three-phase switch mode rectifier with hysteresis current control 总被引:10,自引:0,他引:10
A three-phase configuration of a switch mode rectifier (SMR) that makes use of continuous conduction waveform of the input supply current is suggested. Continuous conduction is achieved by the hysteresis current control (HCC) technique. This three-phase SMR operates at close to unity power factor and has reduced current stresses on the switching devices because of the continuous nature of input current. The conduction period considered for the rectifier diodes is 180°. Digitally simulated performance results are provided. Selected experimental results demonstrating the SMR operation are also presented 相似文献
5.
K. S. Adhav V. B. Raut M. V. Dawande 《International Journal of Theoretical Physics》2009,48(4):1019-1029
Bianchi type-III space time is considered in the presence of cosmic strings and thick domain walls source in the frame work
of general relativity. Exact cosmological models using various cases of ρ=α
λ and p=γ
ρ are presented. It is observed that the behavior of these models (with cosmic strings and domain walls), based on their physical
and kinematical properties, is found to be identical. 相似文献
6.
Frontispiece: Rhodium Enalcarbenoids: Direct Synthesis of Indoles by Rhodium(II)‐Catalyzed [4+2] Benzannulation of Pyrroles
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7.
K. S. Adhav A. S. Nimkar V. G. Mete M. V. Dawande 《International Journal of Theoretical Physics》2010,49(5):1127-1132
Axially symmetric Bianchi type-I space time is considered in the presence of massless scalar field and cosmic strings in Barber’s
(Gen. Relativ. Gravit. 14:117, 1982) self-creation theory with two conditions (i) A=B
n
and (ii) ε+λ=0. Some physical and kinematical properties of the model, thus obtained, are also discussed. 相似文献
8.
K. S. Adhav A. S. Nimkar M. V. Dawande 《International Journal of Theoretical Physics》2008,47(7):2002-2010
We have obtained Kaluza-Klein cosmological solutions in n-dimensions for quark matter coupled with the string cloud and domain walls in general relativity. Some properties of the
models, thus obtained, are also studied. 相似文献
9.
A programmable method for single- and three-phase switch-mode rectifiers (SMRs), operating with discontinuous current conduction to control input power factor close to unity, is presented. Single-phase SMR operation is based on variable turn-on time, while three-phase SMR operation is based on constant turn-on time 相似文献
10.
K. S. Adhav A. S. Nimkar M. V. Dawande 《International Journal of Theoretical Physics》2008,47(12):3201-3206
Axially symmetric Bianchi type-I cosmological micro model is obtained in Barber’s (Gen. Relativ. Gravit. 14:117, 1982) modified theory of general relativity. Some properties of the model are discussed. 相似文献