A Mild, Nonacidic Method for the Conversion of Carboxylic Esters into Oxazolines
作者:J. H. Dodd、J. Guan、C. F. Schwender
DOI:10.1080/00397919308013297
日期:1993.4
Abstract Conversion of carboxylic esters directly into amide alcohols is facilitated by use of base. Combined with a nonacidic cyclization of the intermediate amide alcohol this method allows formation of oxazolines under nonacidic conditions directly from the carboxylic esters.
Synthesis of fluoro- and polyfluoro-veratraldehydes by electrophilic fluorination
作者:Jun-ying Nie、Kenneth L. Kirk
DOI:10.1016/0022-1139(95)90108-t
日期:1995.10
Lithiation of oxazolines derived from fluorinated veratric acid, followed by electrophilic fluorination and subsequent reductive oxazoline cleavage, provides a convenient route to di- and tri-fluoroveratraldehydes. Similarly, 4-fluoroveratrol was converted by lithiation and fluorination to 3,4-difluoroveratrol, which can be used to prepare 5,6-difluoroveratraldehyde.
Dodd John H., Guan Jihua, Schwender Charles F., Synth. Commun., 23 (1993) N 7, S 1003-1008