Zum Ringschluß des 2.2′‐Dilithiumbiphenyls mit Triarylzinn‐ und ‐bleihalogenid

Group 14 metalloles. 1. Synthesis, organic chemistry, and physicochemical data

“…In marked contrast, the reaction of RLi (R = nBu, fBu, Ph) at -70 °C in THF with TMSI or TMGE gives r 2 'vB, ( 104 ) ( 1:10 ) occurs.…”

Marriage of heavy main group elements with π-conjugated materials for optoelectronic applications

“…Soon after, the same group prepared a series of benzoplumboles and spiro-cycles (133-152; Scheme 11). 125,126 The first crystallographic structure determinations of plumboles appeared in a 2010 study by Saito. 127 In this report, both the structures of hexaphenylplumbole Ph 2 PbC 4 Ph 4 (137) as well as its spiro analogue Pb(C 4 Ph 4 ) 2 (133) were determined; the general synthetic route used by the Saito group followed prior chemistry outlined by van Beelen et al (Scheme 11).…”

“…examined a series of thiophene-capped stannole model complexes(126)(127)(128)(129) in Scheme 10) and found that compound 129 was the most suitable for Stille coupling, leading to effective C-C bond formation with arylstannane (ArSnMe 3 ) reagents while leaving the Sn-C linkages about the core stannole heterocycle intact. Co-polymerization of 129 with bis(trimethylstannyl)thiophene yielded selective Stille coupling to form the air-and moisture-stable thiophene-stannole copolymer 130 as a dark purple solid in high molecular weight (M w = 17.0 kDa) (Scheme 10).…”