Practical methodology for the asymmetric synthesis of organofluorine compounds
摘要:
Pseudoephedrine alpha-fluoroacetamide (1), a nonvolatile, crystalline solid, is alkylated efficiently and with high diastereoselectivity with reactive alkylhalides. The alkylation products can be hydrolyzed under mild basic conditions to form alpha-fluoro carboxylates with high enantiomeric enrichment. (C) 1998 Elsevier Science Ltd. All rights reserved.
Practical methodology for the asymmetric synthesis of organofluorine compounds
摘要:
Pseudoephedrine alpha-fluoroacetamide (1), a nonvolatile, crystalline solid, is alkylated efficiently and with high diastereoselectivity with reactive alkylhalides. The alkylation products can be hydrolyzed under mild basic conditions to form alpha-fluoro carboxylates with high enantiomeric enrichment. (C) 1998 Elsevier Science Ltd. All rights reserved.
Synthesis of tertiary alkyl fluoride centers by asymmetric CC(F) bond formation
作者:Andrew G. Myers、Lydia McKinstry、James L. Gleason
DOI:10.1016/s0040-4039(97)01706-1
日期:1997.10
Asymmetric alkylation of pseudoephedrine α-fluoropropionamide (1) affords α-alkylated products efficiently and with excellent stereocontrol at the newly formed tertiary alkyl fluoride center. Mild alkaline hydrolysis of the products provides the corresponding carboxylic acids with high enantiomeric excess.