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Communication | Regular issue | Vol 23, No. 12, 1985, pp.2989-2993
Published online, 1st January, 1970
DOI: 10.3987/R-1985-12-2989
New Boron Heteropentacyclic Compounds of C2 Symmetry Bearing Two Chiral Atoms: Nitrogen and Boron

Nerberto Farfán and Rosalinda Contreras*

*Centro de Investigación y de Estudios Avanzados, Departmento de Química , I.P.N, Apartado 14-740, México, D.F., 07000, Mexico

Abstract

The preparation and spectroscopic characterization of two new boron heteropentacyclic compounds derived from 2,5-diaminohydroquinone ephedrines is described. Although the nitrogen boron coordination affords four new chiral centers, stereoselective ring closure proceeds to give only one isomer.