三氟甲磺酸三甲基硅酯 、
(R)-4-{(R)-3-[(S)-2,2-dimethyl[1,3]dioxolan-4-yl]-3-hydroxyhexa-4,5-dien-1-ynyl}-2,2-dimethyl-6,6a-dihydro-3aH-cyclopenta[d][1,3]dioxole-3a-carbaldehyde 在
2,6-二甲基吡啶 作用下,
以
二氯甲烷 为溶剂,
以67%的产率得到(R)-4-{(R)-3-[(S)-2,2-dimethyl[1,3]dioxolan-4-yl]-3-trimethylsilyoxyhexa-4,5-dien-1-ynyl}-2,2-dimethyl-6,6a-dihydro-3aH-cyclopenta[d][1,3]dioxole-3a-carbaldehyde