Tetranitromethane as an efficient reagent for the conversion of epoxides into β-hydroxy nitrates
作者:Yuliya A. Volkova、Olga A. Ivanova、Ekaterina M. Budynina、Elena B. Averina、Tamara S. Kuznetsova、Nikolai S. Zefirov
DOI:10.1016/j.tetlet.2008.04.050
日期:2008.6
A convenient regioselective method for the preparation of β-hydroxy nitrates based on the ring opening reaction of epoxides by tetranitromethane in the presence of triethylamine is described. A series of substituted β-hydroxy nitrates were obtained in high yields under mild conditions.
Oxiranes and aziridines efficiently undergo ring opening with bismuth nitrate at room temperature to furnish the corresponding β-(nitrooxy)-substituted alcohols and amines respectively. The conversions are highly regio- and stereoselective and afford the nitrooxy-compounds in excellent yields within a short period of time.
Ceric ammonium nitrate: A mild and efficient reagent for conversion of epoxides to β-nitrato alcohols
作者:Nasser Iranpoor、Peyman Salehi
DOI:10.1016/0040-4020(94)00979-5
日期:1995.1
Catalytic amount of Ce(IV) as cericammoniumnitrate (CAN) alone or in the presence of excess nitrate ion reacts smoothly and efficiently with epoxides under mild conditions to produce the corresponding β-nitrato alcohols in good to excellent yields.
1,4-Bis(triphenylphosphonium)-2-butene Peroxodisulfate: An Efficient Reagent for Synthesis of β-Nitrato Alcohols
作者:Rashid Badri、Maryam Gorjizadeh
DOI:10.1080/00397910902898593
日期:2009.11.5
A simple and efficient method for the ring opening of epoxides to -hydroxy nitrates has been achieved in the presence of ammonium nitrate and 1,4-bis(triphenylphosphonium)-2-butene peroxodisulfate.
Resolution of racemic 3-aryloxy-1-nitrooxypropan-2-ols by lipase-catalyzed enantioselective acetylation
Both (R)- and (S)-enantiomers of 3-aryloxy-1-nitrooxypropan-2-ols (R)-(-)-1, (S)-(+)-2 were prepared in high enantiomeric excess by lipase from Pseudomonas cepacia (Amano PS) or Pseudomonas fluorescens (Amano AK)-catalyzed acetylation of racemic alcohols la-g with vinyl acetate in n-hexane at 4 or 22 degreesC. The enantio selectivity of this transformation was dependent on the substitution pattern of the aryl ring with E-values ranging from 31 to 111. (C) 2001 Elsevier Science Ltd. All rights reserved.