Organic Chemistry - ACS Publications - American Chemical Society

---

The Journal of

Organic Chemistry EDITOR-IN-CHIEF CLAYTON H. HEATHCOCK Department of Chemistry University of California #1460 Berkeley, California 94720-1460 ASSOCIATE EDITORS B a r r y K. C a r p e n t e r Cornell University J a m e s A. M a r s h a l l University of South Carolina C. D a l e P o u l t e r University of Utah University

Henry Rapoport of California, Berkeley

Andrew Streitwieser University of California, Berkeley S t e v e n M. W e i n r e b The Pennsylvania State University MANAGING EDITOR C h e r i R. H a d l e y ADVISORY BOARD Wesley G. Bentrude Weston Thatcher Borden Steven D. Burke David Collum Scott E. Denmark Philip DeShong Steven J. Gould Kendall N. Houk Thomas R. Hoye John A. Katzenellenbogen Jay R. Luly Philip D. Magnus Bruce E. Maryanoff Marvin J. Miller William Nugent Iwao Ojima Daniel H. Rich Stuart L. Schreiber David I. Schuster Lawrence T. Scott Amos B. Smith, III JoAnne Stubbe Laren M. Tolbert James D. Wuest Chi-Huey Wong

The Journal of Organic Chemistry (ISSN 0022-3263) is p u b l i s h e d biweekly by t h e American Chemical Society a t 1155 16th Street, N.W., Washington, DC 20036. Second-class postage paid at Washington, DC, and additional mailing offices. POSTMAS­ TER: Send address changes to The Journal of Organic Chemistry, Member & Subscriber Services, P.O. Box 3337, Columbus, OH 43210. Canadian GST Reg. No. R127571347. Printed in the USA. American Chemical Society 1155 16th St., N.W. Washington, DC 20036 (202) 872-4600 TDD (202) 872-8733 FAX (202) 872-4615 Journals Department American Chemical Society 2540 Olentangy River Road P.O. Box 3330 Columbus, OH 43210 (614) 447-3600, Ext. 3171 TELEX 6842086; FAX (614) 447-3745 Member & Subscriber Services American Chemical Society P.O. Box 3337 Columbus, OH 43210 (614) 447-3776; FAX (614) 447-3671 (800) 333-9511

Member

Dennis C. Liotta Emory University (Secretary—Treasurer of the Division of Organic Chemistry of the American Chemical Society)

U.S.

Canada All and Other Mexico Europe* Countries*

Printed

PUBLICATIONS DIVISION Robert H. Marks, Director Journals Department: Charles R. Bertsch, Head Editorial Office: Mary E. Scanlan, Man­ ager; Anne C. O'Melia, Journals Editing Manager; Esther J. Ober, Senior Associate Editor; Mary B. Harig and Lee S. Thur­ ston, Assistant Editors Advertising Office: Centcom, Ltd., 1599 Post Road East, P.O. Box 231, Westport, CT 06881 © Copyright 1995 American Chemical Society. Copyright permission: Reprographic copying beyond that permitted by Section 107 or 108 of the US Copyright Act is allowed, provided t h a t t h e appropriate per-copy fee is paid directly to the Copy­ right Clearance Center (CCC), 222 Rose­ wood Dr., Danvers, MA 01923, USA. Any­ one may excerpt up to 200 words per article for noncommercial, scholarly pur­ poses w i t h a p p r o p r i a t e credit to t h e source. Direct other reprint permission requests to ACS Copyright Office, Publica­ tions Division, 1155 Sixteenth St., N.W., Washington, DC 20036. For quotes and information on ordering bulk reprints, call (202) 872-4539 or write to the Distribution Office at the ACS Washington address. The paper used in t h i s publication m e e t s t h e m i n i m u m r e q u i r e m e n t s of American National Standard for Informa­ tion Sciences—Permanence of Paper for Printed Library Materials, ANSI Z39.481984. Editorial Information

Ex-Officio

Correspondence regarding a c c e p t e d papers and proofs should be directed to the Journals Department at the address above. P a g e charges of $25.00 per page may be paid for papers published in this jour­ nal. Payment does not affect acceptance or scheduling of papers. The American Chemical Society and its Editors assume no responsibility for the statements and opinions advanced by con­ tributors. Registered names and trademarks, etc., used in this publication, even without spe­ cific indication thereof, are not to be con­ sidered unprotected by law. The document number appears at the end of each article. A document number is a nine character code t h a t is unique to each article and is assigned during the editorial production of the manuscript. It serves as a link between the documents in the printed product and the electronic products (CJACS Plus Images and jour­ nals on CD-Rom) and makes it easy to retrieve the full text of the exact article. 1995 S u b s c r i p t i o n a n d O r d e r i n g Information Members may share/donate their per­ sonal subscriptions with/to libraries and the like but only after 5 years from publi­ cation.

Instructions for authors and copyright transfer form are printed in the first issue of each volume. Please conform to these instructions when submitting manu­ scripts. Manuscripts for publication should be submitted to the Editor, Clayton H. Heathcock, at his Berkeley, CA, address.

Members 1 yr Nonmembers t Microfiche Members 1 yr Nonmembers + Supplementary material on microfiche f

$ 76 $920

$126 $970

$ 198 $1068

$ 238 $1108

$ 76 $920 $ 90

$ 76 $920 $115

$ 106 $ 950 $ 115

$ 106 $ 950 $ 115

* Air service included. t Supplementary material on microfiche is included in. all nonmember subscriptions.

New and renewal subscriptions should be sent with payment to American Chemical Society, Department L-0011, Columbus, OH 43268-0011. Nonmember subscribers in Japan must enter subscrip­ tion orders with Maruzen Company Ltd., 3-10 Nihonbashi 2-chome, Chuo-ku, Tokyo 103, Japan. Tel: (03)272-7211. Microform a n d b a c k i s s u e orders should be sent to: Microforms & Back Issues Office a t t h e ACS Washington Office. Claims for missing numbers will not be allowed if loss was due to failure of notice of change of address to be received in the time specified; if claim is dated (a) N o r t h America: more t h a n 90 d a y s beyond issue date, (b) all other foreign: more than 180 days beyond issue date. Claims are handled by Member & Sub­ scriber Services. Supplementary material isnotedinthe table of contents with a • . It is available as photocopy ($12.00 for up to 3 pages and $1.50 per page for additional pages, plus $2.00 for foreign postage) or a 24 χ micro­ fiche ($12.00, plus $1.00 for foreign post­ age). Canadian residents should add 7% GST. See supplementary material notice at end of journal article for number of pages. Orders must state whether for pho­ tocopy or for microfiche and give complete title of article, names of authors, journal, issue date, and page numbers. Prepay­ ment is required and prices are subject to change. Order from Microforms & Back Issues Office at t h e ACS Washington address. Supplementary material except s t r u c t u r e factors also a p p e a r s in t h e microfilm edition.