Cyclic Organogermanium Hydrides

The cyclic organogennanes listed in Table 92 are prepared (I) by reaction of the corresponding halides with LiAlH or LiAlD4. The cyclic hydride chlorides are obtained by reaction of a dihydride (ll) with mercuric chloride. 

with n-CeHiaCJCH - CoHi3CH CH(Bu)6eCH2CH2( H2 (2575). n-BuCH CH2 Bu(n-CeHia)6eCH2CH26H2 (2575). 

By rxn. of Bu(ClCH2CHMeCH2)GeHCl with Na in MePh, in 20% yield 

By rxn. of (1h2(CH2)3 eBr2 with LiAlH in N atm., in 90% yield (1 4 92). By rxn. of GeCU with (CH2CH2MgBr)2 in Et20, followed by LiAlH4, in 21% yield 

By rxn. of Ph2GeBr2 with (CH2CH2MgBr)2, followed by Br and LiAlH, in 57% yield (2O59). 

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Other cyclic organogermanium hydrides are listed in Table 92. 

This chapter includes deuterides as well as compounds having deuterium-substitution in the carbon moiety. All compounds are listed in Table 2. Cyclic organogermanium deuterides may be found in Chapter 7 3 The following scheme summarizes synthetic methods for deuterium substituted organogermanium hydrides. 

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