2-甲氧基丙烯 、
(3S,5S,7R,9R,11S,13S,15R,17R)-2,2,6,6,10,10,14,14,18,18-decamethylnonadecane-1,3,5,7,9,11,13,15,17,19-decol 在
对甲苯磺酸 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 18.0h,
以52%的产率得到(4SR,6RS)-2,2,5,5-tetramethyl-4-[(4RS,6SR)-2,2,5,5-tetramethyl-6-{(4SR,6RS)-2,2,5,5-tetramethyl-6-[(4RS)-2,2,5,5-tetramethyl-1,3-dioxan-4-ylmethyl]1,3-dioxan-4-ylmethyl}-1,3-dioxan-4-ylmethyl]-6-[(4SR)-2,2,5,5-tetramethyl-1,3-dioxan-4-ylmethyl]-1,3-...