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Chemistry of Heterocyclic Compounds. Volume 42. Small Ring Heterocycles. Part II. Azetidines, β-Lactams, Diazetidines, and Diaziridines PDF

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Preview Chemistry of Heterocyclic Compounds. Volume 42. Small Ring Heterocycles. Part II. Azetidines, β-Lactams, Diazetidines, and Diaziridines

SMALL RING HETEROCYCLES - 2 PART This is the Forry-Second Volume in the Series THE CHEMISTRY OF HETEROCYCLIC COMPOUNDS ~- THE CHEMISTRY OF HETEROCYCLIC COMPOUNDS A SERIES OF MONOGRAPHS ARNOLD WEISSBERGER EDWARD C. TAYLOR AND Editors SMALL RING HETEROCYCLES- Part 2 Azet idines, Lactams, Diazet idines, J- and Diaziridines Edited by Alfred Hassner DEPARTMENT OF CHEMISTRY STATE UNIVERSITY OF NEW YORK AT BINCHAMTON AN INTERSCIENCE@ PUBLICATION JOHN WILEY AND SONS NEWYORK * CHICHESTER BRISBANE TORONTO SINGAPORE An Interscience@ Publication Copyright 0 1983 by John Wiley & Sons, lnc. All rghts reserved. Published simultaneously in Canada. Reproduction or translation of any part of this work beyond that permitted by Section 107 or 108 of the 1976 United States Copyright Act without the permission of the copyright owner is unlawful. Requests for permission or further information should be addressed to the Permissions Department, John Wiley & Sons, Inc. Librov of Congress Cotaloging in Publicotion &to: Main entry under title: heterocycles. Small ring (The Chemistry of heterocyclic compounds, ISSN 0069 3154;v.42,pt. 1- ) “An Interscience publication”. Includes indexes. 1. Heterocyclic compounds. 2. Ring formation (Chemistry) I. Hassner, Alfred, 1930- . 11. Series: Chemistry of Heterocyclic compounds; v. 42, pt. 1, etc. QD4OO.SS115 547l.59 82-4790 0-47145625-1 ISBN ISBN 13: 078-0-471-05625-6 10 9 8 7 6 5 4 3 2 1 To my wife Cyd The Chemistry of Heterocyclic Compounds The chemistry of heterocyclic compounds is one of the most complex branches of organic chemistry. It is equally interesting for its theoretical implications, for the diversity of its synthetic procedures, and for the physiological and industrial significance of heterocyclic compounds. A field of such importance and intrinsic difficulty should be made as readily accessible possible, and the lack of a modem detailed and comprehensive as presentation of heterocyclic chemistry is therefore keenly felt. It is the intention of the present series to fill this gap by expert presentations of the various branches of heterocyclic chemistry. The subdivisions have been designed to cover the field in its entirety by monographs which reflect the importance and the interrelations of the various compounds, and accommodate the specific interests of the authors. In order to continue to make heterocyclic chemistry as readily accessible as possible new editions are planned for those areas where the respective volumes in the first edition have become obsolete by overwhelming progress. If, however, the changes are not too great so that the first editions can be brought up-to-date by supplementary volumes, supplements to the respective volumes will be published in the first edition. WEISSBERGER ARNOLD Research Laboratories Eastman Kodak Company Rochester, New York EDWARDC . TAYLOR Princeton University Princeton, New Jersey vii The chemistry of small ring compounds (three- and four-membered rings) has played a considerable role in the development of modem organic chemistry. Foremost among these reactive molecules are the small ring heterocycles. The presence of one or more heteroatoms in these strained rings imparts a measurable dipole moment to such molecules. It also adds a new dimension of intrinsic difficulty concerning the synthesis and stability of such heterocyclic analogs of cyclopropanes and cyclo- butanes. If one considers the compressed bond angles (near 60" in three-membered rings and near 90" in four-membered rings), the mere synthetic challenge, especially for the unsaturated analogs of these heterocycles, seems enormous. Indeed, the small ring heterocycles possess much greater reactivity toward a variety of reagents than do their five- or six-membered ring analogs. The overwhelming amount of recent research literature in this field has made it necessary to divide this treatise on small ring heterocycles into several parts, with three- and four-membered rings sometimes interspersed. The current volume con- stitutes Part 2 in the series. Part 1 includes the three-membered rings containing one nitrogen or sulfur; thus it consists of chapters on Aziridines, Azirines, and Three-Membered Rings Contain- ing Sulfur, which includes niiranes, Thiirenes, well as their respective Oxides, as Dioxides. and Onuim salts. Part 2 contains four chapters. Three of these cover the chemistry of four- membered containing nitrogen, namely Azetidines (and Azetines), PLactams, rings and Four-Membered Rings Containing Two Nitrogens (Diazetidines and Diazetines). To tie in with the latter subject, a chaptei on three-membered rings containing two nitrogens (Diaziridines, Diazirines, Dioziridinones) is included. It is only since the mid-1960s that an explosive expansion in the chemistry of some of these heterocycles has taken place. In 1964, when the first review of this series on three- and four-membered heterocycles, edited by Weissberger, was published, azetines were unknown, while p-lactams and diazetidines were covered as part of the azetidines (trimethyleneimines) chapter and little was known about diaziridines. Most of these topics are now covered in separate chapters of the current volume. The recent interest in 0-lactams, largely due to the pharmacological properties of penam (e.g., penicillin) and cepham (e.g., cephalosporin) antibiotics, has neces. sitated a chapter devoted to synthesis of 0-lactams (azetidinones), separate from the azetidine chapter. Even so, coverage here had to be limited to general synthetic approaches to the 0-lactam ring system. 0-lactam antibiotics rightfully require Since a separate volume, only a few illustrative references to their synthesis are included. There has been a great deal of recent progress on regio- and stereoselectivity, as well as on photochemistry of these three and four-membered rings. What is even intriguing is their use as synthons for other functional groups as well as for larger ix X Preface ring heterocycles. Furthermore, there has been increasing interest in the biological properties and polymerization behavior of such molecules. An effort was made to briefly present the general state of the art and to empha- size research results of the past 15-20 years. Such an undertaking makes it necessary to be more selective than all-inclusive. Often it became more realistic to build on existing reviews of the subject. Editing this volume is especially meaningful to me, because I had the privilege of being involved firsthand in the exciting explorations of some of these hetero- cycles during the past years. 20 I am indebted to the authors of the chapters for their splendid cooperation and patience and to my secretary, Joyce Scotto, for her invaluable help. Most of all, this book is devoted to my family, whose love has sustained me through this effort, and to the loving memory of my daughter, Erica, cruelly torn from us at a tender age. ALFREDH ASSNER Binghamton, New York February I983 Contents 1. AZETIDINES 1 James A. Moore and Rita Seelig Ayers 2. THE OF THE PLACTAM FUNCTION 219 SYNTHESIS Gaty A. Koppel 3. FOURMEMBERED RINGS CONTAINING NITROGEN TWO HETEROATOMS 443 Reinhatd Richter and Henri Ulrich 4. DIAZIRIDINES, 3H-DIAZIRINES, DIAZIRIDINONES, AND DIAZIRIDLNIMINES 547 Harold W. Heine Author Index 629 Subject Index 651 xi Chemistry of Heterocyclic Compounds, Volume4 2 Edited by Alfred Hassner Copyright 0 1983 by John Wiley & Sons, Ltd. CHAPTER I A ze t idi nes JAMES A . MOORE Department of Gemistry. University of Dehwre. Newark. Dehware RITA SEELIG AYERS . . .. E I du Pont de Nemours and Co Centmi Research and Development Department. Experimental Station. Wilmington.D ehwre I . Introduction . . . . . . . . . . . . . . . . . . . . 3 I1. Physical Properties . . . . . . . . . . . . . . . . . . 4 1 . Thermodynamic Data and Basicity . . . . . . . . . . . . . 4 . 2 Vacuum Ultraviolet and Photoelectron Spectra . . . . . . . . . 5 3 . Infrared and Raman Data . . . . . . . . . . . . . . . 5 4 . Spectra . . . . . . . . . . . . . . . . . . . 6 NMR 5 . Diffraction Data and Molecular Structure . . . . . . . . . . . 7 6 . Spectra . . . . . . . . . . . . . . . . . . . 8 Mass . ESR Spectra . . . . . . . . . . . . . . . . . . . 7 9 ill . Synthesis of the Azetidine Ring . . . . . . . . . . . . . . 10 1. Formation of the N-C, Bond . . . . . . . . . . . . . . 10 A . Secondary Azetidines . . . . . . . . . . . . . . . 11 B . N-Alkylazetidines . . . . . . . . . . . . . . . . 12 C. Quaternary Azetidinium Compounds . . . . . . . . . . . 14 D . NArylazetidines . . . . . . . . . . . . . . . . . 15 E. N-Sulfonylazetidines . . . . . . . . . . . . . . . 16 F . N-Alkyl-3-azetidinols and Azetidinones . . . . . . . . . . 17 C . N-Alkylazetidine-2-carboxylatesa nd Related Compounds . . . . . 19 H . N.Akyl.2-aryl.3.acyIazetidines . . . . . . . . . . . . . 20 2 . Formation of the C,-C, Bond . . . . . . . . . . . . . . 21 A . Photochemical Cyclization . . . . . . . . . . . . . . 21 B . Other Methods . . . . . . . . . . . . . . . . . 22 3 . Cycloaddition . . . . . . . . . . . . . . . . . . . 22 A. Thermal [2+2] Cycloaddition . . . . . . . . . . . . . 23 B . Photochemical [2+2] Cycloaddition . . . . . . . . . . . 25 C . [ 3+1) Cycloaddition . . . . . . . . . . . . . . . 28 4 . Formation of Azetidines from Other Ring Systems . . . . . . . . 30 1

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