Remarkable Alkene-to-Alkene and Alkene-to-Alkyne Transfer Reactions of Selenium Dibromide and PhSeBr. Stereoselective Addition of Selenium Dihalides to Cycloalkenes
作者:Vladimir A. Potapov、Maxim V. Musalov、Evgeny O. Kurkutov、Vladimir A. Yakimov、Alfiya G. Khabibulina、Maria V. Musalova、Svetlana V. Amosova、Tatyana N. Borodina、Alexander I. Albanov
DOI:10.3390/molecules25010194
日期:——
The original goal of this research was to study stereochemistry of selenium dihalides addition to cycloalkenes and properties of obtained products. Remarkable alkene-to-alkene and alkene-to-alkyne transfer reactions of selenium dibromide and PhSeBr were discovered during this research. The adducts of selenium dibromide with alkenes or cycloalkenes easily exchange SeBr2 with other unsaturated compounds
Reactivities of bis(2-bromoethyl)selenium dibromide and its related compounds: formation of hypervalent T-shaped coordinated selenium compounds by reaction with pyridine and its derivatives
The reaction of bis(2-bromoethyl)selenium dibromide 1 with pyridine 2a and its derivatives 2b-2d gave hypervalent T-shaped coordinated selenium compounds 3a-3d with two halogen atoms in the trans positions in moderate to good yields. Also, 2-pyridiniumethylselenol bromide 10 was obtained by the reaction of (2-bromoethyl)phenyl selenium dibromide 9 with 2a in 9.8% yield. The X-ray analysis of 10 revealed