Regio-selective hydroxylation of gem-difluorinated octanes by alkane hydroxylase (AlkB)
摘要:
gem-Difluoromethylene substituted molecules constitute a distinct class of fluorinated compounds. In this study, special chemistry has been developed for their preparation based on the highly selective terminal hydroxylation of these gem-difluorinated octanes by AlkB (alkane hydroxylase) from Pseudomonas putida Gpo1 to form gem-difluorinated octan-1-ols. The hydroxylation reaction is performed by whole-cell catalysis. Identification of the distal- and proximal-hydroxylation products was made by H-1, C-13, and F-19 NMR; GC and GC/MSD; and/or by comparison with authentic standards in GC. To the best of our knowledge, we have obtained the first synthesis of 2,2-, 3,3- and 4,4-difluorooctan-1-ols, from simple and inexpensive starting materials. (C) 2011 Elsevier Ltd. All rights reserved.
DOI:
10.1016/j.tetlet.2011.03.101
作为产物:
描述:
2,2-Difluor-octan 在
E. coli-alkane hydroxylase whole-cell system 作用下,
反应 3.0h,
以68%的产率得到7,7-difluorooctan-1-ol
参考文献:
名称:
Regio-selective hydroxylation of gem-difluorinated octanes by alkane hydroxylase (AlkB)
摘要:
gem-Difluoromethylene substituted molecules constitute a distinct class of fluorinated compounds. In this study, special chemistry has been developed for their preparation based on the highly selective terminal hydroxylation of these gem-difluorinated octanes by AlkB (alkane hydroxylase) from Pseudomonas putida Gpo1 to form gem-difluorinated octan-1-ols. The hydroxylation reaction is performed by whole-cell catalysis. Identification of the distal- and proximal-hydroxylation products was made by H-1, C-13, and F-19 NMR; GC and GC/MSD; and/or by comparison with authentic standards in GC. To the best of our knowledge, we have obtained the first synthesis of 2,2-, 3,3- and 4,4-difluorooctan-1-ols, from simple and inexpensive starting materials. (C) 2011 Elsevier Ltd. All rights reserved.
gem-Difluoromethylene substituted molecules constitute a distinct class of fluorinated compounds. In this study, special chemistry has been developed for their preparation based on the highly selective terminal hydroxylation of these gem-difluorinated octanes by AlkB (alkane hydroxylase) from Pseudomonas putida Gpo1 to form gem-difluorinated octan-1-ols. The hydroxylation reaction is performed by whole-cell catalysis. Identification of the distal- and proximal-hydroxylation products was made by H-1, C-13, and F-19 NMR; GC and GC/MSD; and/or by comparison with authentic standards in GC. To the best of our knowledge, we have obtained the first synthesis of 2,2-, 3,3- and 4,4-difluorooctan-1-ols, from simple and inexpensive starting materials. (C) 2011 Elsevier Ltd. All rights reserved.