Organic compounds bearing a difluoroaminooxy group
摘要:
A preparative method for the synthesis of C- and N-difluoroaminooxy compounds was elaborated. The method involves the reaction of N,N-difluoro-O-fluorosulfonyl hydroxylamine with the corresponding alkoxides and N-oximide salts. It was shown that N-difluoroaminooxy compounds can add to olefins at the double bond.
DOI:
10.1007/bf02494414
作为产物:
描述:
N-羟基丁二酰亚胺 在
sodium hydroxide 作用下,
以
甲醇 为溶剂,
反应 24.0h,
以58%的产率得到sodium salt of N-hydroxysuccinimide
参考文献:
名称:
Development of efficient processes for multi-gram scale and divergent preparation of fluorous-Fmoc reagents
摘要:
An optimized, multi-gram scale synthesis of fluorous-Fmoc reagents is described. Fmoc reagents bearing C3F7, C4F9, and C6F13 chains were prepared on multi-gram scale (ca. 1.0-7.0 g) in eight steps with overall yields of 73%, 60%, and 90%, respectively. The order of addition of the fluorous alkenes in a one-pot double tagging Heck reaction was also investigated in order to conduct an encoded mixture synthesis of f-Fmoc reagents. The target f-Fmoc reagents bearing C3F7, C4F9, and C6F13 chains could be effectively separated based on the fluorine content of the molecules. (C) 2015 Elsevier Ltd. All rights reserved.
DOI:
10.1016/j.tet.2015.05.083
作为试剂:
描述:
(5S,6S)-hexadec-1-yne-5,6-diol 在
CpRu[P(p-CH3OC6H4)3]2Cl 三(4-甲氧苯基)膦 、 tert-butylammonium hexafluorophosphate(V) 、 sodium salt of N-hydroxysuccinimide 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 22.0h,
以65%的产率得到(S)-(S)-1-(3,4-dihydro-2H-pyran-2-y)undecan-1-ol
Isopropenyl chloroformate (IPCF) was used for preparation of mixed carbonates (Aryl and isopropenyl) which are very suitable reagents for active ester synthesis of amino acid derivatives ( Boc derivatives In particular).
Diastereoselective and Enantiospecific Synthesis of γ-Substituted α,β-Unsaturated Nitriles from O<i>-</i>Protected Allylic Cyanohydrins
作者:Alejandro Baeza、Jesús Casas、Carmen Nájera、José M. Sansano
DOI:10.1021/jo060239j
日期:2006.5.1
γ-Functionalized α,β-unsaturated nitriles are prepared diastereoselectively and enantiospecifically fromenantioenriched cyanohydrin-O-phosphates and carbonates derived fromα,β-unsaturatedaldehydes, either by palladium or iridium-catalyzed nucleophilic allylic substitution reactions with different nucleophiles. Appropriate reaction conditions for dibenzylamine, benzylamine, sodium azide, NaOAc,
[EN] FLUOROUS TAGGING AND SCAVENGING REACTANTS AND METHODS OF SYNTHESIS AND USE THEREOF<br/>[FR] NOUVEAU REACTIFS DE MARQUAGE AU FLUOR ET DE PIEGEAGE ET PROCEDES DE SYNTHESE ET D'UTILISATION CORRESPONDANTS
Organic compounds bearing a difluoroaminooxy group
作者:A. V. Fokin、Yu. N. Studnev、V. P. Stolyarov、R. Sh. Valiev
DOI:10.1007/bf02494414
日期:1999.1
A preparative method for the synthesis of C- and N-difluoroaminooxy compounds was elaborated. The method involves the reaction of N,N-difluoro-O-fluorosulfonyl hydroxylamine with the corresponding alkoxides and N-oximide salts. It was shown that N-difluoroaminooxy compounds can add to olefins at the double bond.