1-庚基锂 、
2-Oxohexahydro-2H-cyclopenta[B]furan-4-carbaldehyde 在
三异丙氧基氯化钛 作用下,
生成
(1RS,5SR,6SR)-6-<(1SR)-1-Hydroxy-2-octynyl>-2-oxabicyclo<3.3.0>octan-3-one 、 (1RS,5SR,6SR)-6-<(1RS)-1-Hydroxy-2-octynyl>-2-oxabicyclo<3.3.0>octan-3-one 、 (1SR,5RS,6SR)-6-<(1RS)-1-Hydroxy-2-octynyl>-2-oxabicyclo<3.3.0>octan-3-one 、 (1SR,5RS,6SR)-6-<(1SR)-1-Hydroxy-2-octynyl>-2-oxabicyclo<3.3.0>octan-3-one