Synthesis 2018; 50(13): 2601-2607
DOI: 10.1055/s-0036-1591555
paper
© Georg Thieme Verlag Stuttgart · New York

CuI-Catalyzed [3+2] Cycloaddition of Hindered Vinylidenebisphosphonates (VBP) with Azomethine Imines for Highly Regioselective Access to Dinitrogen-Heterobicycle-Containing Bisphosphonates

Zhongxiang Zhu
a   Key Laboratory of Tropical Medicinal Plant Chemistry of the Ministry of Education, College of Chemistry & Chemical Engineering, Hainan Normal University, Haikou 571158, Hainan Province, P. R. of China   Email: wmsh@hainnu.edu.cn   Email: wumingshu@126.com
,
Qinghe Wang
a   Key Laboratory of Tropical Medicinal Plant Chemistry of the Ministry of Education, College of Chemistry & Chemical Engineering, Hainan Normal University, Haikou 571158, Hainan Province, P. R. of China   Email: wmsh@hainnu.edu.cn   Email: wumingshu@126.com
,
Dulin Kong
b   School of Pharmaceutical Sciences, Hainan Medical University, Haikou 571199, Hainan Province, P. R. of China
,
Tiao Huang
a   Key Laboratory of Tropical Medicinal Plant Chemistry of the Ministry of Education, College of Chemistry & Chemical Engineering, Hainan Normal University, Haikou 571158, Hainan Province, P. R. of China   Email: wmsh@hainnu.edu.cn   Email: wumingshu@126.com
,
Mingshu Wu*
a   Key Laboratory of Tropical Medicinal Plant Chemistry of the Ministry of Education, College of Chemistry & Chemical Engineering, Hainan Normal University, Haikou 571158, Hainan Province, P. R. of China   Email: wmsh@hainnu.edu.cn   Email: wumingshu@126.com
› Author Affiliations
Further Information

Publication History

Received: 08 December 2017

Accepted after revision: 27 February 2018

Publication Date:
08 May 2018 (online)


Abstract

A concise, atom-economic, and highly regioselective synthetic strategy for the construction of several dinitrogen-fused heterocycles bearing bisphosphonates by 1,3-dipolar cycloaddition reaction of azomethine imines with tetraethyl vinylidene-1,1-bisphosphonate in the presence of CuI in toluene media has been developed. The targeted compounds were obtained in good yields and with excellent regioselectivity. This method for the synthesis of gem-bisphosphonates (BPs) is particularly attractive due to features such as low cost, mild conditions, atom economy, high stereoselectivity, and potential biological activity of the product.

Supporting Information