Tan, Ze published the artcileSelective Synthesis of Epolactaene Featuring Efficient Construction of Methyl (Z)-2-Iodo-2-butenoate and (2R,3S,4S)-2-Trimethylsilyl-2,3-epoxy-4-methyl-γ-butyrolactone, COA of Formula: C7H13BrSi, the publication is Organic Letters (2006), 8(13), 2783-2785, database is CAplus and MEDLINE.
(+)-Epolactaene (I) was synthesized in 14 steps in the longest linear sequence. The synthesis was highlighted by a highly efficient preparation of the lactone intermediate II, which only required three steps from the com. available (S)-3-butyn-2-ol. It also featured a fully stereocontrolled synthesis of the intermediate (2E,3E,5E,9E)-2-ethylidene-4,10-dimethyl-11-oxo-3,5,9-undecatrienoic acid Me ester, which was constructed through the use of Zr-catalyzed methylalumination of alkynes and a series of Pd-catalyzed organozinc cross-coupling reactions, such as homopropargylation, direct ethynylation, and alkenylation of (Z)-α-iodocrotonic acid Me ester.
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 C5H5NO3S, COA of Formula: C7H13BrSi.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary