英语翻译The combined organic layers were washed withbrine,dried
英语翻译
The combined organic layers were washed with
brine,dried over MgSO4,filtered,and concentrated in vacuo
to afford a pale yellow viscous oil which was purified by flash
chromatography (heptane/EtOAc = 9:1 f 4:1) to afford
aldehyde 4 as a colorless oil (1.55 g,99%).The oil was used
directly in the next step since the aldehyde epimerizes when
stored in the freezer