(3+3)-ANNULATION OF DONOR-ACCEPTOR CYCLOPROPANES TO 1,2,3-TRISUBSTITUTED DIAZIRIDINES. A. FIRST EXAMPLE OF (3+3)-ANNULATION OF TWO DIFFERENT THREE-MEMBERED RINGS ArticleChagarovskiy A.O., Vasin V.S., Ivanova O.A., Kuznetsov V.V., Makhova N.N., Trushkov I.V.Advances in synthesis and complexing: book of abstracts the fourth international scientific conference in two parts. Moscow, RUDN University, 24–28 april 2017 г.: Volume 1 «Organic chemistry section». Том 1. 2017. С. 58-58