Darstellung und Eigenschaften von und Reaktionen mit metallhaltigen Heterocyclen, VII [1]. Heterolytische Spaltung der Re-Re-Bindung in den Zweikern-Anionen [(OC)4ReP(R2 )O]2 2- mit Elektrophilen - ein Weg zu Heterocyclen mit Re-σ-Bindung / Preparation and Properties of, and Reactions with, Metal-Containing Heterocycles, VII [1]. Heterolytic Cleavage of the Re-Re Bond in the Binuclear Anions [(OC)4ReP(R2)O]2 2- with Electrophiles -a Pathway to Heterocycles with Re-C-σ-Bonds
Open Access
- 1 September 1980
- journal article
- research article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 35 (9) , 1104-1110
- https://doi.org/10.1515/znb-1980-0908
Abstract
The preparation of the six-membered rhenacyclohexanes (1a, b) [R = CH3 (a), C6H5 (b)] is accomplished by heterolytic cleavage of the Re-Re bond in the binuclear anions [(OC)4ReP(R2)O]2 2- with strong electrophiles like the alkanediylbis(triflate) (CH3 )2C(CH2Y)2 (Y = OSO2CF3). followed by an attack of the co-positioned carbenium-like C atom on the phosphinite oxygejn of the anion. 1 a, b insert SO2 under ring expansion yielding the seven-memberod heterocyeles (2a, b). 1b crystallizes triclinic in the space group P1̄ with Z = 2. Some characteristic IR and NMR data are discussed.Keywords
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