Reactions of thallium(I) azide and iodine with alkenes
作者:Richard C. Cambie、Rodney C. Hayward、Peter S. Rutledge、Truis Smith-Palmer、Paul D. Woodgate
DOI:10.1039/p19760000840
日期:——
The action of thallium(I) azide and iodine on some alkenes has been examined. This reagent gives different product ratios from those given by sodium azide and iodinechloride, and it differs from the latter reagent in that iodineazide cannot be preformed. Solvent incorporation occurs when thallium(I) azide–iodine is added to cyclohexene in acetonitrile. In addition to products arising from diaxial
Multigram‐scale enzymatic kinetic resolution of
<i>trans</i>
‐2‐azidocyclohexyl acetate and chiral reversed‐phase HPLC analysis of
<i>trans</i>
‐2‐azidocyclohexanol
作者:Paulina Hebda、Lilianna Wiśniowska、Przemysław W. Szafrański、Marek Cegła
DOI:10.1002/chir.23397
日期:2022.2
Lipase-catalyzed hydrolytic kineticresolution is a method of obtaining optically pure chiral alcohols and amines, which requires additional tools for determining enantiomerical purity. Herein, we present a study on multigram-scale hydrolytic kineticresolution of trans-2-azidocyclohexyl acetate using Pseudomonas cepacia lipase immobilized on Immobead support. We investigated several parameters of
Stereoselective Synthesis of 1,2,3-Triazolooxazine and Fused 1,2,3-Triazolo-<i>δ</i>-Lactone Derivatives
作者:Ayşegül Gümüş、Kudret Mert、Cihangir Tanyeli
DOI:10.1002/hlca.201300441
日期:2014.10
The stereoselective synthesis of 1,2,3‐triazolooxazine and fused 1,2,3‐triazolo‐δ‐lactone by applying chemoenzymatic methods is described. trans‐2‐Azidocyclohexanol was successfully resolved by Novozyme 435 with an ee value of 99%. Installation of the alkyne moiety on the enantiomerically enriched azidoalcohol by O‐alkylation, followed by intramolecular azidealkyne [3+2] cycloaddition resulted in