The method of obtaining a carbonyl compound by oxidizing a primary or secondary alcohol compound is carried out with higher yield than using sodium hypochlorite as the oxidizing agent. The primary or secondary alcohol compound is oxidized in the presence of hypochlorous acid tetraalkylammonium, preferably with the coexistence of nitroxyl radical catalyst and halogenated metal-based co-catalyst, to produce carbonyl compounds consisting of aldehyde compounds, carboxylic acid compounds, and ketone compounds.
A detailed study of tetrathiomolybdate mediated tandem regio- and stereoselective ring opening of aziridine, disulfide formation, reduction of disulfide bond and Michael reaction in a one-pot operation is reported. This constitutes four reactions that take place in one-pot operation. In the reaction of [BnEt3N]4MoS4 with an aziridine derived from cyclohexene and in the absence of Michael acceptor intermediates
一锅操作中,详细报道了四硫代钼酸盐介导的氮丙啶串联区域和立体选择性开环,二硫键形成,二硫键还原和迈克尔反应的详细研究。这构成了一锅操作中发生的四个反应。在[BnEt 3 N] 4 MoS 4的反应中在不存在迈克尔受体的情况下,用衍生自环己烯的氮丙啶的化合物分离并充分表征了磺酰胺基二硫化物和磺酰胺基硫醇。还已经表明,可以在环氧化物存在下选择性地打开氮丙啶环。通过掺入合适的迈克尔受体作为底物的一部分,可以进行分子内的1,4-加成,以高收率合成含硫的无环环状氨基酸酯衍生物和硫代双环[3.3.1]壬烷衍生物。 。
Synthesis of 1,5-diazaspiro[2.3]hexanes, a novel diazaspirocyclic system
作者:Asta Žukauskaitė、Sven Mangelinckx、Gert Callebaut、Clarence Wybon、Algirdas Šačkus、Norbert De Kimpe
DOI:10.1016/j.tet.2013.02.065
日期:2013.4
The convenient synthesis of 1,5-diazaspiro[2.3]hexanes, as new structurally challenging strained diazaspirocyclic compounds, was developed starting from easily accessible ethyl2-(bromomethyl)-1-tosylaziridine-2-carboxylate. The key transformations in the developed four-step sequence involved a chemoselective reduction of the functionalized ethyl 1-tosylaziridine-2-carboxylate to the corresponding
<i>Vicinal</i>, Double C–H Functionalization of Alcohols via an Imidate Radical-Polar Crossover Cascade
作者:Allen F. Prusinowski、Raymond K. Twumasi、Ethan A. Wappes、David A. Nagib
DOI:10.1021/jacs.0c01318
日期:2020.3.18
iodination via 1,5-hydrogen atom transfer (HAT), (ii) desaturation via I2 complexation, and (iii) vicinal amino-iodination of an in situ generated allyl imidate. The synthetic utility of this double C-Hfunctionalization is illustrated by conversion of aliphatic alcohols to a diverse collection of α,β,γ substituted products bearing heteroatoms on three adjacent carbons. The radical-polar crossover mechanism
Regio- and Stereospecific Synthesis of β-Sulfonamidodisulfides and β-Sulfonamidosulfides from Aziridines using Tetrathiomolybdate as a Sulfur Transfer Reagent
comprehensive study of a general and effective one-step procedure for the synthesis of β-sulfonamidodisulfides directly from N-tosyl aziridines in a regio- and stereospecific manner under neutral conditions without the use of any Lewis acid or base has been reported. This methodology is extended to the synthesis of an optically pure cyclic seven-membered disulfide 29. Synthesis of a variety of β-sulfonamidosulfides
Pyridinium Hydrobromide Perbromide: A Versatile Catalyst for Aziridination of Olefins Using Chloramine-T
作者:Sayyed Iliyas Ali、Milind D. Nikalje、A. Sudalai
DOI:10.1021/ol9900966
日期:1999.9.1
[reaction: see text] Pyridiniumhydrobromideperbromide (Py x HBr3) catalyzes effectively the aziridination of electron-deficient as well as electron-rich olefins using Chloramine-T (N-chloro-N-sodio-p-toluenesulfonamide) as a nitrogen source to afford the corresponding aziridines in moderate to good yields.
[反应:查看文本]氢溴酸吡啶鎓过溴化物(Py x HBr3)使用氯胺T(N-氯-N-sodio-p-甲苯磺酰胺)有效催化缺电子和富电子烯烃的叠氮化得到中等至良好产率的相应氮丙啶。