The Mitsunobu reaction in the synthesis of α,α-difluoro-β-amino acids
摘要:
A three-stage strategy is proposed to prepare alpha,alpha -difluoro-beta -amino acids starting from aldehydes and with ethyl bromodifluoroacetate as a fluorine source. The Mitsunobu reaction as a key step was studied by P-31 and F-19 NMR for alkyl- and aryl-substituted alpha,alpha -difluoro-beta -hydroxyesters and performed under optimized conditions giving the target compounds. (C) 2001 Elsevier Science B.V. All rights reserved.
The Mitsunobu reaction in the synthesis of α,α-difluoro-β-amino acids
摘要:
A three-stage strategy is proposed to prepare alpha,alpha -difluoro-beta -amino acids starting from aldehydes and with ethyl bromodifluoroacetate as a fluorine source. The Mitsunobu reaction as a key step was studied by P-31 and F-19 NMR for alkyl- and aryl-substituted alpha,alpha -difluoro-beta -hydroxyesters and performed under optimized conditions giving the target compounds. (C) 2001 Elsevier Science B.V. All rights reserved.