propane diol, readily obtainable by dihydroxylation of commercially available allylphenylsulfone, acts as an efficient and new protection reagent for both aldehydes and ketones. This protective group is elegantly removed by use of 1,8-diazabicyclo[5.4.0]-7-undecene (DBU), under nonaqueous conditions.
通过对市售的烯丙基苯基砜进行二羟基化可以很容易地获得3-苯基磺酰基
1,2-丙二醇,它是醛和酮的一种有效的新型保护剂。在非
水条件下,通过使用
1,8-二氮杂双环[5.4.0] -7-
十一碳烯(
DBU)可以优雅地除去该保护基。