A Mild, Room-Temperature Protection of Ketones and Aldehydes as 1,3-Dioxolanes under Basic Conditions
作者:Alfred Hassner、Chennakesava Bandi、Sharad Panchgalle
DOI:10.1055/s-0032-1317529
日期:——
Protection of ketones or aldehydes as 1,3-dioxolane derivatives proceeds within minutes at room temperature in the presence of N-hydroxybenzenesulfonamide, its O-benzyl derivative, or the tosyl analogue, in the absence of strong protonic acids, and in the presence of base (Et3N). Acid-sensitive groups such as O-THP, O-TBS, or N-Boc are unaffected.
在室温下,在 N-羟基苯磺酰胺、其 O-苄基衍生物或甲苯磺酰基类似物存在下,在不存在强质子酸的情况下,在几分钟内将酮或醛保护为 1,3-二氧戊环衍生物碱 (Et3N)。O-THP、O-TBS 或 N-Boc 等酸敏感基团不受影响。