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:

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

Paper | Regular issue | Vol 32, No. 2, 1991, pp.261-268
Published online, 1st January, 1970
DOI: 10.3987/COM-90-5606
Reaction of N-Benzoyl-4,7-phenanthrolinium Salt with Trimethyl Phosphite and Crystal Structure of Dimethyl N,N’-Dibenzoyl-3,4,7,8-tetrahydro-4,7-phenanthroline-3,8-diphosphonate

Isao Takeuchi, Yoshiki Hamada,* and Zenei Taira

*Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tenpaku, Nagoya 468-8503, Japan


The reaction of 4,7-phenanthroline (1) with some substituted benzoyl chlorides and trimethyl phosphite in the presence of sodium iodide gave the corresponding α,α’-diphosphonates, α,γ’-diphosphonates, α-phosphonates, and γ-phosphonates respectively. 3,8-Diphosphonates (2a1, 2a2) were separated by thin layer chromatography and the crystal structure of 2a2 was determined by X-ray analysis.