Manganese chloride reagent

Maltodextrin 182 Maltose 164,165, 181-184 Mandelin s reagent 426 Manganese cations 144 Manganese(II) chloride reagent 333 Mannitol 409,410 Marking the front 132 Marmesin 67 Marquis reaction 352 Marquis reagent 299 Matacil 107... 

Cahiez, G. Butyl Manganese Chloride and Related Reagnets. In Encyclopedia of Reagents for Organic Synthesis-, Paquette, L., Ed. Wiley ... 

Copper-Catalyzed Alkylation of Organomanganese Reagents Preparation of 2,2-Dimethyldecane from tert-Butyl Manganese Chloride. 

Manganese-copper-catalyzed conjugate addition of organomagnesium reagents to a,p-enones is a general synthetic method. Table I shows that the reaction can be successfully performed even with enones of low reactivity. 30% Manganese chloride is necessary to obtain good yields. In most cases, however, 0.1% cuprous chloride is sufficient.3... 

Although 2-(orf/io-chlorophenyl)-4,4-dimethyloxazoline 465 does not react with a Grignard reagent under normal conditions, Cahiez recently reported that the substitution occurred in the presence of a catalytic amount of manganese chloride (10% mol) to give the substitution product 466 in acceptable yield... 

To 2 ml of the soda extract add 1 ml concentrated hydrochloric acid and 2 ml of the manganese(II) chloride reagent. A brown (or black) colouration indicates the presence of nitrate, nitrite, hexacyanoferrate(III), chlorate, bromate, iodate, chromate or permanganate. A negative test indicates the absence of the above oxidizing agents except small amounts of nitrates and nitrites and of arsenate if reducing anions have been found, this test is inconclusive. 

In the presence of manganese chloride, hmctionalized aromatic halides and aromatic Grignard reagents crosscouple under mild conditions. Likewise, synthetically important heterocycles cross-couple in the presence of cobalt catalysts. 

Manganese (III) acetate or chloride salts [Mn30(0Ac) H0Ac, MnCb] can react with alkenes to afford 1,2-dichlorides and chlorohydrin acetates (equation 16). i The manganese(III) reagent promotes the chlorination of 1,6-heptadiene (42) to afford almost equal amount of open chain and cycliz dichlorides... 

Dicyclopentadienyl manganese was first obtained by thermal decomposition of the ammine [MnfNHsle] (CbHb)2 (50, 111). Shortly afterward, it was made in good yield by the reaction between manganese bromide and cyclopentadienyl sodium in tetrahydrofuran (214), and it may also be prepared by the interaction of manganese chloride and an ethereal solution of the Grignard reagent, followed by sublimation (60). At ordinary temperatures it forms brown crystals. 

Mn-doped CdS nanoparticles were synthesized by the colloidal chemistry method with cadmium chloride (CdCli), manganese chloride (MnClj) and sodium sulfide (NaaS) as starting materials. PVA was used as a capping reagent. All steps of the synthesis were performed at room temperature under ambient conditions. 

Pure water with a volume about half that of the sample is placed in a sample bottle and 1 mL of the SO % sulphuric acid solution, 1 mL alkaline iodide solution and 1 mL mangane-se(/7) chloride reagent are added separately. After each reagent addition the solution is thoroughly mixed to avoid any precipitation of manganese hydroxides. 

Unfortunately, oxidation of chloride ions = 1l3 will also occur. This problem is overcome by using the Zimmerman-Rheinhardf reagent which contains manganese(II) ions and phosphoric acid. 

Acylation reactions can also be greatly improved in this way, with t-alkyl- or sec-alkyl-manganese reagents reacting with acid chlorides in excellent yields [123]. The related addition-elimination to 3-ethoxy-2-cyclohexenone is also improved, resulting after acidic aqueous workup in 3-methyl-2-cyclohexenone [125]. The perilla-ketone 126 was prepared in an improved yield using copper(I) catalysis (Scheme 2.58) [129]. 

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