Preparation and characterization of the rhenium silyl esters (η 5-C 5 Me 5)(CO)(NO) ReC (O) OSiR 3 (SiR 3= SiMe 2 Ph, SiEt 3)

MDB Cavanaugh, SM Tetrick, CJ Masi…

Index: Cavanaugh, Marisa DiBiase; Tetrick, Stephen M.; Masi, Christopher J.; Cutler, Alan R. Journal of Organometallic Chemistry, 1997 , vol. 538, # 1-2 p. 41 - 48

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Citation Number: 4

Abstract

Three synthetic approaches to the rhenium silyl esters Cp*(CO)(NO) ReC (O) OSiEt3 (3) and Cp*(COXNO) ReC (O) OSiMe2Ph (4) were evaluated.(a) Treatment of a CH2Cl2 solution of Cp*(CO) 2 (NO) Re+ BF4− with a silanolate NaOSiEt3 (5) or NaOSiMe2Ph (6) provided 90% isolated yields of 3 and 4. These stable orange-yellow solids are extremely moisture sensitive: traces of water hydrolyze them to Cp*(CO)(NO) ReCO2H and the parent silanol. ...