135736-75-3

Upstream product

• 536-74-3 phenylacetylene 
• 135736-74-2 (Z)-α,β-bis(chlorodimethylgermyl)styrene 
• 22702-77-8 1,2-dichlorotetramethyldigermane 
• 501-65-5 diphenyl acetylene 

Relevant academic research and scientific papers

Preparation, structural characterization of 1,2-digermacyclobut-3-enes, and their palladium-catalyzed insertion of alkynes

1,2-Digermacyclobut-3-enes were prepared by the treatment of Z-α,β-bis(chlorodialkylgermyl)ethenes with Na metal in boiling toluene and their structures were fully established by spectroscopic methods coupled with X-ray crystallography. In the presence of an appropriate catalyst, 1,2-digermacyclobut-3-enes reacted smoothly with alkynes to give the corresponding insertion products, 1,4-digermacyclohexa-2,5-dienes in moderate to good yields. Conventional complexes, such as [Pd(PPh3)4] and [Pt(PPh3)4], serve as efficient catalysts. The mechanism of the insertion reaction of alkynes into the germanium-germanium bond of 1,2-digermacyclobut-3-enes is discussed in terms of a key intermediate, a 1,4-digerma-2-buten-1,4-diylpalladium.

Digermylplatinum(II) organometallic rings L2PtGe(Me2)EGeMe2 [E = N-, O, S, (η-C5H4)2Fe]

The synthesis, reactivity, and characterization of the digermylplatinum(II) linear complexes (ClMe2Ge)2Pt(PPh3)2 (1) and (ClMe2Ge)2Pt(diphos) (2) and cyclic complexes (diphos)PtGe-(Me2)EGeMe2 [E = S (3), -NPh (4), (η5-C5H4)Fe(η5-C 5H4) (5), O (6)] are reported. The chemistry of 2-6 is illustrated through their reactions with phenylacetylene and N-methyltriazolinedione. Complexes 3 and 6 give double germylation of these unsaturated systems, while 2, by reaction with triazolinedione, gives the monogermylated complex Me2-(Cl)GePt(Cl)diphos and the dimer of the germylated heterocycle Me2GeNC(O)N(Me)C(O)N.

Double Germylation of Unsaturated Carbon Compounds with Digermanes in the Presence of Palladium and Platinum Catalysts

Double germylation of acetylenes, isoprene, and ethylene with 1,2-dichloro-1,1,2,2-tetramethyldigermane proceeds in the presence of palladium- and platinum-phosphorus ligand complexes to afford α,ω-bis(chlorodimethylgermyl) compounds in moderate to good yields.