Inui, Masaharu published the artcileHighly Stereoselective Construction of Spiro[4.5]decanes by SmI2-Promoted Ketyl Radical Mediated Tandem Cyclization, Application of (4-Bromobut-1-yn-1-yl)trimethylsilane, the publication is Organic Letters (2007), 9(3), 469-472, database is CAplus and MEDLINE.
Ketyl radical mediated, samarium diiodide-promoted tandem cyclization of ω-alkynyl carbonyl compounds, e.g. (phosphonomethylene)decynal I, bearing activated alkenes gave spiro[4.5]decanes, e.g. II, stereoselectively. In the presence of HMPA, α,β-unsaturated esters and alkenyl phosphonates were converted to spiro[4.5]decanes and a monocyclic compound, resp. In the presence of Sm, bicyclic lactones were obtained from α,β-unsaturated esters, and a spiro[4.5]decane was obtained from an alkenyl phosphonate. The stereochem. changeover at initial cyclization was controlled by a variety of activators.
Organic Letters published new progress about 69361-41-7. 69361-41-7 belongs to bromides-buliding-blocks, auxiliary class PROTAC Linker,Aliphatic Linker, name is (4-Bromobut-1-yn-1-yl)trimethylsilane, and the molecular formula is C7H13BrSi, Application of (4-Bromobut-1-yn-1-yl)trimethylsilane.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary