Rearrangement of primary 2,3-epoxy amines into 1,2-aziridinyl 3-ols.
摘要:
Conditions were found to transform primary 2,3-epoxy amines into 1,2-aziridinyl 3-ols which involve an intramolecular opening of the epoxide ring mediated by trimethylaluminum.
The synthesis of (R,S)-reboxetine employing a tandem cyclic sulfate rearrangement—opening process
摘要:
(R,S)-Reboxetine was synthesized in nine steps and with 43% overall yield starting from trans-cinnamyl alcohol. Following silylation and AD steps, the two hydroxyl groups at C-1 and C-2 were simultaneously activated to the cyclic sulfate. A series of tandem reactions initiated by desilylation transposed the activation to C-3, then to C-1, where nucleophilic displacements took place in succession. During this process, the configuration at C-2 was inverted while that at C-1 was retained through a double inversion. (C) 2012 Elsevier Ltd. All rights reserved.
Zinc Azide Mediated Mitsunobu Substitution. An Expedient Method for the One-Pot Azidation of Alcohols
作者:Marie Claude Viaud、Patrick Rollin
DOI:10.1055/s-1990-26809
日期:——
In the presence of the diisopropyl azodicarboxylate/triphenylphosphine couple, alcohols react with zinc azide/bis-pyridine complex to give various azides via a Mitsunobu-type substitution.
β-Fluoroamphetamines via the Stereoselective Synthesis of Benzylic Fluorides
作者:Alexander J. Cresswell、Stephen G. Davies、James A. Lee、Paul M. Roberts、Angela J. Russell、James E. Thomson、Melloney J. Tyte
DOI:10.1021/ol100862s
日期:2010.7.2
A range of substituted aryl epoxides undergo efficient ring-opening hydrofluorination upon treatment with 0.33 equiv of BF3 center dot OEt2 in CH2Cl2 at -20 degrees C to give the corresponding syn-fluorohydrins, consistent with a mechanism involving a stereoselective S(N)1-type epoxide ring-opening process. The benzylic fluoride products of these reactions are valuable templates for further elaboration, as demonstrated by the preparation of a range of aryl-substituted beta-fluoroamphetamines.
A One‐Pot Process toward 2‐Hydroxy‐1,3‐diamino Compounds: A Synthetic Application to Dual Norepinephrine/Serotonin Reuptake Inhibitors
作者:Nagum Lee、Seung Hyun Oh、Soo Y. Ko
DOI:10.1002/bkcs.10111
日期:2015.2
The synthesis of (R,S)-reboxetine employing a tandem cyclic sulfate rearrangement—opening process
作者:Jin Yu、Soo Y. Ko
DOI:10.1016/j.tetasy.2012.04.018
日期:2012.5
(R,S)-Reboxetine was synthesized in nine steps and with 43% overall yield starting from trans-cinnamyl alcohol. Following silylation and AD steps, the two hydroxyl groups at C-1 and C-2 were simultaneously activated to the cyclic sulfate. A series of tandem reactions initiated by desilylation transposed the activation to C-3, then to C-1, where nucleophilic displacements took place in succession. During this process, the configuration at C-2 was inverted while that at C-1 was retained through a double inversion. (C) 2012 Elsevier Ltd. All rights reserved.
Rearrangement of primary 2,3-epoxy amines into 1,2-aziridinyl 3-ols.
作者:Rachida Najime、Serge Pilard、Michel Vaultier
DOI:10.1016/s0040-4039(00)79090-3
日期:1992.9
Conditions were found to transform primary 2,3-epoxy amines into 1,2-aziridinyl 3-ols which involve an intramolecular opening of the epoxide ring mediated by trimethylaluminum.