Enantioselective synthesis of siloxyallenes from alkynoylsilanes by reduction and a brook rearrangement and their subsequent trapping in a [4+2] cycloaddition
Two flavors of selectivity: An enantioselective Meerwein-Ponndorf-Verley- type reduction of alkynoylsilanes by a chiral lithium amide followed by a Brook rearrangement and SE2′ electrophilic substitution provides the title compounds in a one-po