HETEROCYCLES

Heterocycles has a pay-per-view service for Non-subscribers.
You will be able to directly purchase the full text article through PayPal.
Your purchased Paper can be downloaded after the payment is completed.
An e-mail will be sent the URL to download the paper.
If you have any questions, please contact: purchase@heterocycles.com

Price: ¥ 4,400 (Yen only)
Period: This Article can be accessed for 7 days.

■ The 1,3-Dipolar Cycloaddition of Methyl Acrylate to Hindered 3-Oxidopyraziniums

Madeleine Helliwell, Yun You, and John A. Joule*

*The School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, U.K.

Abstract

Methyl acrylate adds to 1,2,5,6-tetramethyl-3-oxidopyrazinium to give a standard 1,3-dipolar cycloadduct — a 3,8-diazabicyclo[3.2.1]octan-2-one — however from the more hindered 5,6-diethyl-1,2-dimethyl-3-oxidopyrazinium, a 4,7-dioxo-3,6-diazabicyclo[3.2.1]octane, the result of extensive rearrangement of the initial 1,3-dipolar cycloadduct, was obtained and its structure determined by X-Ray crystallographic analysis.