Disilyl selenide

Selenoaldehydes,2 In the presence of 5-10 mole% of butyllithium, this disilyl selenide converts aldehydes into selenoaldehydes with formation of the disiloxane [(CH,)3SiOSi(CH3),]. The active reagent is presumed to be lithium trimethylsilyl-selenide, (CH3)3SiSeLi, which can be regenerated by a Peterson-type elimination (equation I). 

Disilyl selenide, 3 240 Disodium ethylenedithiolate complexes with group VIIB metals, 12 242 Disodium phthalocyanine, preparation and properties of, 7 39... 

A similar range of derivatives of Ti, Zr and Hf result as indicated in Scheme 7, and of particular interest are the reactions of 32 with DMPM to give the A-frame -like complexes 33 with disilyl selenide elimination97. 

Si2SeH , Disilyl selenide, 24 127 Si3AlCi2H33, Aluminum, tris[(trimethyl-sily )methy ]-, 24 92... 

However, the former method requires the troublesome manipulation involved in preparing sodium selenide (or lithium selenide) in liquid ammonia and conducting the silylation in benzene (or diethyl ether). The latter method is inefficient and results in a low yield of the desired disilyl selenide. Thus a one-pot, high-yield procedure based on the lithium triethylborohydride reduction of elemental selenium has been developed, as depicted in eq 3. In this method, both preparation of Li2Se and silylation with MesSiCl are performed in THE Technically important is the use of selenium shot if selenium powder is utilized, the yield of Li2Se decreases sharply. Moreover, addition of small amount of boron trifluoride etherate (1.6 mol %) accelerates the silylation of Li2Se. ... 

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