Three-carbon annelations. Regiocontrolled reactivity of trimethylsilyl- and ethoxyethyl-protected cyanohydrins. Versatile homoenolate and acyl anion equivalents
A New Strategy for Construction of Eight-Membered Carbocycles by Brook Rearrangement Mediated [6 + 2] Annulation
作者:Kei Takeda、Hidekazu Haraguchi、Yasushi Okamoto
DOI:10.1021/ol0353767
日期:2003.10.1
text] A newly developed strategy for construction of eight-memberedcarbocycles via [6 + 2] annulation that involves the combination of beta-alkenoyl acylsilanes and a vinyllithium derivative is described. A unique feature of this annulative approach is that it enables in one operation and a stereoselective manner construction of eight-membered ring systems containing useful functionalities for further