A Novel Approach for the Formation of Carbon−Nitrogen Bonds: Azidation of Alkyl Radicals with Sulfonyl Azides
作者:Cyril Ollivier、Philippe Renaud
DOI:10.1021/ja004129k
日期:2001.5.1
Two preparatively attractive methods for the azidation of alkyl radicals are described. Secondary and tertiary alkyl iodides and dithiocarbonates are easily converted into the corresponding azides, either by reaction with ethanesulfonyl azide in the presence of dilauroyl peroxide, or by treatment with benzenesulfonyl azide and hexabutylditin in the presence of a radical initiator. Interestingly, intramolecular
Water Compatible Hypophosphites-<i>d</i><sub>2</sub> Reagents: Deuteration Reaction via Deutero-deiodination in Aqueous Solution
作者:Zejin Song、Jing Zeng、Ting Li、Xiang Zhao、Jing Fang、Lingkui Meng、Qian Wan
DOI:10.1021/acs.orglett.0c00001
日期:2020.3.6
conventional deuteration approaches which typically entail deuterated solvents and/or moisture exclusion, an unprecedented deutero-deiodination reaction attainable in aqueous (H2O) solution is presented herein. By utilizing the stability of inorganic deuterated calcium/sodium hypophosphites against wayward H/D isotopicexchange within pH 2.5-11.7, these shelf-stable, nontoxic, cost-effective, and environmentally
Enzymatic resolution of norbor(NE)nylmethanols in organic media and an application to the synthesis of (+)- and (−)-endo-Norbornene lactone.
作者:A.J.M. Janssen、A.J.H. Klunder、B. Zwanenburg
DOI:10.1016/s0040-4020(01)80984-4
日期:1991.7
The enzymatic resolution of some norbornene carboxylic acids, norbornenylmethanols and -methylamines was evaluated. The kinetic resolution of norbornyl- and norbornenylmethanols by Porcine Pancreatic Lipase (PPL)-catalyzed transesterification in methyl acetate as the solvent leads to corresponding acetates and remaining methanols both of high enantiomeric purity. A useful application is the synthesis of both enantiomers of endo-norbornene lactone 8n via transesterification of iodolactone 18. The influence of structural variations on the efficiency of the PPL-catalyzed resolution of lactone methanols 21, 23, 25 and 28, at the optimal reaction conditions established for iodolactone 18, was investigated.
New Radical Allylation Reaction of Iodides
作者:Frédéric Le Guyader、Béatrice Quiclet-Sire、Stéphanie Seguin、Samir Z. Zard
DOI:10.1021/ja9708878
日期:1997.8.1
Formation of Carbon−Nitrogen Bonds via a Novel Radical Azidation Process