通过手性腈的无氰化物合成和醛肟脱水酶催化的坎普消除反应的结合,我们在此报道醛肟脱水酶在5-sub-4,5-二氢异恶唑的不对称开环中合成手性β的新应用-羟基腈,具有广泛的底物范围,出色的对映选择性(高达99%ee)和良好的周转率(高达11 s -1)。简单分离并用碱性试剂处理后,剩余的手性5-sub-4,5-二氢异恶唑可轻松转化为它们相应的β-羟基腈。使用定点诱变,证实了含亚铁血红素的活性位点,并提出了两种可能的去质子化途径。据我们所知,这是第一个用于从一个简单的烯烃一步一步构建手性羟基和腈基的酶促反应,这为合成β-羟基互补对映异构体提供了一种新颖而有用的策略腈。
2-isoxazolines from arylcyclopropanes: I. Monoarylcyclopropanes in a reaction with nitrosyl chloride activated by sulfur(IV) oxide
作者:O. B. Bondarenko、A. Yu. Gavrilova、M. A. Kazantseva、V. N. Tikhanushkina、E. E. Nifant’ev、L. G. Saginova、N. V. Zyk
DOI:10.1134/s1070428002120163
日期:2006.2
A reaction of monoarylcyclopropanes with nitrosyl chloride activated by sulfur (IV) oxide gave in good yields 5-arylisoxazolines. The reaction is of electrophilic character. A scheme of the reaction was suggested.
Castro, Francisco J. Freire; Vila, Manuel M.; Jenkins, Paul R., Synlett, 1999, # 6, p. 798 - 800
作者:Castro, Francisco J. Freire、Vila, Manuel M.、Jenkins, Paul R.、Sharma, Madan L.、Tustin, Gary、et al.
DOI:——
日期:——
Substituted phenylcyclopropanes in the synthesis of 2-isoxazolines
作者:R. A. Gazzaeva、Yu. S. Shabarov、L. G. Saginova
DOI:10.1007/bf00515629
日期:1984.3
Smirnova, M. M.; Geiderikh, A. V.; Mochalov, S. S., Journal of Organic Chemistry USSR (English Translation), 1988, vol. 24, # 6, p. 1070 - 1075
作者:Smirnova, M. M.、Geiderikh, A. V.、Mochalov, S. S.、Shabarov, Yu. S.
DOI:——
日期:——
4,5-dihydroisoxazoles from arylcyclopropanes: II. Reaction of arylcyclopropanes with nitrosyl chloride activated by sulfur(VI) oxide
作者:O. B. Bondarenko、A. Yu. Gavrilova、M. A. Kazantseva、V. N. Tikhanushkina、E. E. Nifant’ev、L. G. Saginova、N. V. Zyk
DOI:10.1134/s1070428007040136
日期:2007.4
Arylcyclopropanes react with nitrosyl chloride activated by sulfur(VI) oxide to give the corresponding 5-aryl-4,5-dihydro-1,2-oxazoles in quantitative yields. The complex NOC1 center dot 2SO(3) is a highly efficient nitrosating agent which makes it possible to involve in the process arylcyclopropanes having both donor and acceptor substituents in the aromatic ring.