Download Chemistry of Heterocyclic Compounds: Thiophene and Its by Edited by: Salo Gronowitz, Visit Amazon's Salo Gronowitz PDF

By Edited by: Salo Gronowitz, Visit Amazon's Salo Gronowitz Page, search results, Learn about Author Central, Salo Gronowitz,

ISBN-10: 0470187263

ISBN-13: 9780470187265

ISBN-10: 0471612219

ISBN-13: 9780471612216

Actual houses of Thiophene Derivatives (S. Gronowitz & A. Hornfeldt).

Nucleophilic Substitution of Thiophene Derivatives (D. Spinelli, et al.).

Biologically lively Thiophene Derivatives Revisited: 1983 1988 (J. Press).

Index.Content:
Chapter I actual houses of Thiophene Derivatives (pages 1–294): Salo Gronowitz and Anna?Britta Hornfeldt
Chapter II Nucleophilic Substitution of Thiophene Derivatives (pages 295–396): Domenico Spinelli, Giovanni Consiglio, Carlo Dell'Erba and Marino Novi
Chapter III Biologically energetic Thiophene Derivatives Revisited: 1983–1988 (pages 397–502): Jeffery B. Press

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Read or Download Chemistry of Heterocyclic Compounds: Thiophene and Its Derivatives, Part Four, Volume 44 PDF

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Extra info for Chemistry of Heterocyclic Compounds: Thiophene and Its Derivatives, Part Four, Volume 44

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347 The structures of thiophenium bismethoxycarbonylmethylide has been determined by X-ray a n a l y ~ i s . The ’ ~ ~ structure of the complex between thiophene and triphenylmethane has been X-Ray crystallographic investigations of tetracyanothiophene show that the molecule is planar and has C,,, symmetry. ’ * The structures of all three ortho-acetylthiophenecarboxylicacids have been determined. In all the molecules the carbonyl group is in the same plan as the thiophene ring. Carboxylic and ketonic groups are linked together by intramolecular hydrogen bonds, and the position of the carboxylic hydrogen suggests enolic ~ h a r a c t e r .

The ~ ~ ~polarography ~~~~ of methyl 4-nitro-2thiophenecarboxylate and 5-bromo-4-nitro-2-thiophenecarboxylatehas been Polarography was used as an analytical tool for thedetermination of thiophene as 2 - n i t r o t h i 0 p h e n e ~ ~and ' * ~of~ the ~ isomer distribution obtained on nitration of -- I-M-Zsubstituted thiophenes such as 2-formyl-, 2-acetyl-, and 2 - ~ y a n o t h i o p h e n e s , (for ~ ~ ~ review, see Ref. 254). 255 A polarographic method for the determination of thiophene in liquid hydrocarbons is the reduction of thiophene-l ,I-dioxide in DMF.

The crystal structure of other chelates containing thiophene rings have also been elucidated. Examples are the bivalent platinum and palladium complexes of 2-(2'-thieny1)pyridine(TP) with a thienyl-metal bond; thus the complex has the composition Pt(TP) (TP-H)I. '5s In a later study, the synthesis of complexes with the composition M(TP),X, ( X - = Br-, CI-) has been described and the crystal structure of Pd(TP)Br, elucidated. The palladium atom is located on an inversion center and is coordinated to two nitrogen atoms and to bromine atoms in a typical square planar fashion.

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Chemistry of Heterocyclic Compounds: Thiophene and Its Derivatives, Part Four, Volume 44 by Edited by: Salo Gronowitz, Visit Amazon's Salo Gronowitz Page, search results, Learn about Author Central, Salo Gronowitz,


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