Online article for Non-subscribers

Pay per view

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.

Paper | Regular issue | Vol 29, No. 8, 1989, pp.1545-1550
Published online, 1st January, 1970
DOI: 10.3987/COM-89-5001
Reactions of Pyrazole and Pyrrole Derivatives with Trimethylchlorosilane

Katsuhiro Saito,* Yoichi Horie, Toyonobu Murase, and Kensuke Takahashi

*Faculty of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan

Abstract

Reactions of 1-carbomethoxypyrazole and 1-carbomethoxypyrrole with trimethylchlorosilane in hexamethylphosphortriamide in the presence of magnesium afforded the parent compounds, respectively, eliminating the substituents. The similar reaction using 1-methylpyrazole gave 1-methyl-5-trimethylsilylpyrazole through a substitution reaction. The reactions are considered to proceed via radical anions of the heterocycles formed by electron transfers from magnesium.