Reactions of 2,5-dihydro-2,5-dimethoxy-furan with phenylselenenylchloride: Regio- and stereocontrolled generation of highly functionalized C4 building-blocks
作者:Franco D'Onofrio、Roberto Margarita、Luca Parlanti、Daniele Pernazza、Giovanni Piancatelli
DOI:10.1016/s0040-4020(97)10044-8
日期:1997.11
An efficient protocol for stereo- and regiocontrolled synthesis of small polyfunctional molecules is presented. The stereospecific addition of PhSeCl to 2,5-dihydro-2,5-dimethoxy-furan 1 in solvents, such as methylene chloride and methanol, gives cyclic and linear acetals 2 and 3, depending on the solvent used. Emphasis is given to the regiocontrolled hydrolysis of acetal groups for the preparation
提出了一种有效的协议,用于立体和区域控制的小多功能分子的合成。在溶剂(例如二氯甲烷和甲醇)中,将PhSeCl立体定向添加到2,5-二氢-2,5-二甲氧基呋喃1中,根据所用溶剂的不同,可得到环状和线性缩醛2和3。重点是缩醛基的区域控制水解,以制备立体定义的和高度官能化的C 4合成子,例如8、9和13。