Simon, Meike published the artcileDiastereoselective Intramolecular Carbolithiations of Stereodefined Secondary Alkyllithiums Bearing a Remote Alkynylsilane, Application In Synthesis of 69361-41-7, the publication is Organic Letters (2018), 20(12), 3518-3521, database is CAplus and MEDLINE.
Various secondary alkyl iodides bearing a remote alkynylsilane underwent intramol. carbolithiations triggered by an I/Li-exchange performed at -100° using t-BuLi (2.5 equiv). The resulting alkenyllithiums were stereoselectively converted to tetrasubstituted cyclopentane exo-alkylidenes. After Pd-catalyzed hydrogenation, cyclopentanes and cis-bicyclo[4.3.0]nonanes were obtained with stereocontrol of four contiguous centers.
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 C4H5ClN2S, Application In Synthesis of 69361-41-7.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary