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Part – B Studies on isatin derivatives….. Mesropyan et. al. 251 synthesized new N-derivatives of isatin by treating ethyl- chloroacetate, N-(2-chloroethyl) morpholine, and 1, 4bis(chloromethyl)benzene with isatin sodium salt. N-derivatives of isatin and 5-bromoisatin were also prepared by Mannich reaction. (Fig. B.1.21) Mogilaiah et. al. 252 disclosed a conventional method for the preparation of the Mannich base of 3-[3-(p-chlorophenyl)-1, 8-naphthyridin-2ylhydrazono]-2-indolinones using formaldehyde and piperidine. The starting material was prepared by the condensation of 2-hydrazino-3-(p-chlorophenyl)- 1, 8-naphthyridine and 3-phenylimino-2-indolinones. (Fig. B.1.22) Fig. B.1.22 Fig. B.1.21 NH N Yogeeswari et. al. 253 synthesized Mannich bases of gatifloxacin by reacting them with formaldehyde and several isatin derivatives. (Fig. B.1.23) Sriram et. al. 254 reported the synthesis of various aminopyrimidinimino isatin derivatives which was achieved in two steps. First step consists condensation of 5-bromo isatin and 5-(3, 4, 5-trimethoxybenzyl) pyrimidine- 2,4-diamine followed by Mannich reaction using formaldehyde and various secondary amines (R'). (Fig. B.1.24) Department of Chemistry, Saurashtra University, Rajkot-360 005 127 Cl O N N
Part – B Studies on isatin derivatives….. A new class of 4-aminoquinoline derivatives based on the natural product isatin scaffold were designed and synthesized using Mannich reaction on isatin and isatin thiosemicarbozones by Chiyanzu et. al. 215 (Fig. B.1.25) Fig. B.1.23 Fig. B.1.25 Fig. B.1.24 Department of Chemistry, Saurashtra University, Rajkot-360 005 128
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Saurashtra University Re - Accredit
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Statement under O. Ph. D. 7 of Saur
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ACKNOWLEDGEMENT It is a moment of g
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Jignesh Lunagariya, Hitesh Sarvaiya
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CONTENT Content General Remarks 6 A
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Content 3.2 Reaction scheme 149 3.3
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5.14 Conclusion 313 5.15 Spectral r
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MF Molecular Formula MW Molecular W
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GABA Gamma Amino Butyric Acid MES M
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PART - A STUDIES ON 2-METHYL INDOLI
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Part-A Studies on 2-methyl indoline
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CHAPTER - 1 PREPARATION AND YIELD O
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Chapter - 1 Preparation and Yield o
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Chapter - 2 Microwave assisted simp
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Chapter - 2 Microwave assisted simp
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CHAPTER - 4 STUDIES ON DIFFERENT TY
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Chapter - 4 Studies on different ty
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Chapter - 5 Synthesis and Character
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Chapter - 6 Biological evaluation o
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Summary Synthesis and biological pr
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Summary Synthesis and biological pr
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Conferences / Seminar / Workshop At
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