The Journal of
Organic Chemistry EDITOR-IN-CHIEF C L A Y T O N H. H E A T H C O C K Department of Chemistry University of California Berkeley, California 94720 SENIOR EDITORS Peter Beak University of Illinois,
Urbana
Robert M. Coates University of Illinois, Urbana C. Dale P o u l t e r University of Utah University
Henry Rapoport of California,
American Chemical Society 1155 16th St., N.W. Washington, DC 20036 (202) 872-4600 TDD (202) 872-8733 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 & S u b s c r i b e r Services American Chemical Society P.O. Box 3337 Columbus, OH 43210 (614) 447-3776 (800) 333-9511
Berkeley
A n d r e w Streitwieser, J r . University of California, Berkeley Steven M. Weinreb Pennsylvania State University ASSISTANT EDITOR Cheri R. H a d l e y
ADVISORY BOARD Paul A. Aristoff Paul A. Bartlett David E. Bergbreiter Barry Carpenter Pat N. Confalone Rick L. Danheiser John Faulkner Roger Freidinger Bruce Ganem Robert H. Grubbs David Hart Alfred Hassner David Lynn Frank B. Mallory Albert I. Meyers John J. Partridge Matthew Platz Kenneth L. Rinehart Gary B. Schuster Ichiro Shinkai Charles Starks W. Clark Still Craig A. Townsend Edwin Vedejs
Ex-Officio
The Journal of Organic Chemistry ( I S S N 0 0 2 2 - 3 2 6 3 ) is p u b l i s h e d biweekly b y t h e American Chemical Society a t 1155 16th Street, N . W . , W a s h i n g t o n , D C 20036. S e c o n d class p o s t a g e p a i d a t W a s h i n g t o n , D C , a n d a d d i t i o n a l mailing offices. P O S T M A S T E R : Send address changes to The Journal of Organic Chemistry, Member & Subscriber Services, P . O . Box 3337, C o l u m b u s , O H 43210.
Member
William R. Roush Indiana University (Secretary-Treasurer of the Division of Organic Chemistry of the American Chemical Society)
PUBLICATIONS DIVISION Robert H. Marks, Director Journals Department: Charles R. Bertsch, Head; M a r i a n n e C. Brogan, Associate Head; Mary E. Scanlan and Joseph E. Yur vati, Journals Editing Managers; Esther J. Ober, Associate Editor; Diane E. Needham and Teresa M. Schleifer, Assistant Editors Advertising Office: Centcom, Ltd., 500 Post Road East, Westport, CT 06880 © Copyright 1990 by the American Chemical Society. Copyright permis sion: An individual may make a single reprographic copy of an article in this pub lication for personal use. Reprographic copying beyond that permitted by Section 107 or 108 of the U.S. Copyright Law is allowed, provided that the appropriate percopy fee is paid through the Copyright Clearance Center, Inc., 27 Congress St., Salem, MA 01970. For reprint permission, please write to the Copyright Administra tor, Publications Division, at the ACS Washington address. T h e paper used in this publication meets the minimum requirements of Amer ican National Standard for Information S c i e n c e s — P e r m a n e n c e of P a p e r for Printed Library Materials, ANSI Z39.481984. Editorial Information I n s t r u c t i o n s for a u t h o r s and copyright transfer form are printed in the first issue of each volume. Please conform to these instructions when submitting manuscripts. M a n u s c r i p t s for publication should be submitted to the Editor, Clayton H. Heathcock, at his Berkeley, CA, address. Correspondence regarding a c c e p t e d p a p e r s 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. B u l k r e p r i n t s of individual articles are available. For information write to Distri bution Office at the ACS Washington address.
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. S u b s c r i p t i o n and B u s i n e s s Information 1990 s u b s c r i p t i o n p r i c e s , including postage. (For membership information, contact Office of Membership Develop ment at the ACS Washington address.)
U.S. Printed Members—1 yr $ 56 2yr $100 Nonmembers $428 Microfiche Members—1 yr $ 56 2 y r $100 Nonmembers $428 Supplementary $ 40 material ση microfiche
Canada All Other and Mexico Europe* Countries* $ 98 $184 $470
$134 $256 $506
$162 $312 $534
$ 56 $100 $428 $ 55
$ 81 $150 $453 $ 55
$ 81 $150 $453 $ 55
* Air service included.
New a n d r e n e w a l s u b s c r i p t i o n s should be sent with payment to American Chemi cal Society, Department L-0011, Colum bus, OH 43268-0011. Subscriptions are available only on a calendar year basis. Rates quoted do not apply to nonmember subscribers in Japan, who must enter sub scription orders with Maruzen Company Ltd., 3-10 Nihonbashi 2-chome, Chuo-ku, Tokyo 103, Japan. Tel: (03) 272-7211. P r i n t e d edition single i s s u e prices: current year, $17.00; prior year, $18.00. B a c k v o l u m e p r i c e : $453.00. Foreign postage additional. Mail orders should be sent to Microforms & Back Issues Office at the ACS Washington address. Phone o r d e r s can be placed for printed, microfiche, and microfilm editions by call ing the ACS toll free at (800) 333-9511 from anywhere in the continental United States. Phone orders can be charged to Visa, MasterCard, or American Express accounts. Changes of a d d r e s s must include both old and new addresses with ZIP code and a recent mailing label. Send all address changes to Member & Subscriber Services. Please allow 6 weeks for change to become effective. Claims for missing n u m b e r s 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) North America: more than 90 days beyond issue date, (b) all other foreign: more than 180 days beyond issue date. Hard copy claims are handled by Member & Sub scriber Services. S u p p l e m e n t a r y m a t e r i a l is noted in the table of contents with a • . It is available as photocopy ($10.00 for up to 3 pages and $1.50 per page for additional pages, plus $2.00 for foreign postage) or a 24X micro fiche ($10.00, plus $1.00 for foreign post age). See supplementary material notice at end of journal article for number of pages. Orders must state whether for photocopy or for microfiche and give complete title of article, names of authors, journal, issue date, and page numbers. Prepayment is required and prices are subject to change. Order from Microforms & Back Issues Office at the ACS Washington address. Supplementary material except structure factors also appears in the microfilm edi tion and may be ordered by subscription (in microfiche only).
