TY JOUR TI EFFICIENT SYNTHESIS OF A BISSPIRO-3,1-BENZOXAZIN-4,1’-CYCLOPENTANES KW 3,1-benzoxazine KW ortho-(cyclopent-1-enyl)-aniline KW intramolecular heterocyclization KW 3,1-бензоксазин KW орто-(циклопент-1-енил)-анилин KW внутримолекулярная гетероциклизация JO Herald of Technological University AU Salikhov, S.M. AU Zaripov, R.R. AU Krasko, S.A. AU Latypova, L.R. AU Gubaidullin, N.M. AU Abdrakhmanov, I.B. AU Zaikov, G.E. AU Sofina, S.Y. PY 2025 IS 17 PB Kazan National Research Technological University