Iron perchlorate

Two new tetraphenylporphyrin (TPP) catalysts have been reviewed.331 Cr(TPP)m triflate is highly regio- and stereo-selective in rearranging epoxides into aldehydes, while the iron perchlorate analogue affords the corresponding ketones. 

Further examples of oxidative arylic coupling within this family of lignan precursors include the preparation of (+)-schizandrin (169) and (+)-gomisin A (170) (Figure 5), as published by Tanaka and co-workers. In this instance, the key Ar-Ar coupling step with 194 was realized using either ruthenium tetrakis(trifluoroacetate) or iron perchlorate (Scheme 47) [124, 131-133]. As pointed out by the authors, this result was noteworthy as this simple... 

Iron Perchlorate. The ferrous perchlorate and ferric perchlorate solutions were prepared as described by Kury (15). 

For the other cell considered in 45b, involving silver and iron perchlorates, the reaction for 1 faraday is... 

Fig. 29. The UV-Vis spectrum of [2]catenane 21-4PF6 shows - a by virtue of a strong charge transfer band at 830 nm - exclusive occupancy of the cyclophane cavity by the TTF unit, b Addition of one equivalent of Fe(Cl04)3 oxidizes the TTF unit to its radical cation, which results in the circumrotation of the crown ether, such that the 1,5-dioxynaphthalene unit resides within the cyclophane s cavity, as indicated by the appearance of a charge-transfer band at 515 nm. c Addition of a further equivalent of iron perchlorate yields the TTF dication which remains outside the cavity. Chemical reduction of the TTF dication back to its neutral form yields the [2]catenane in which the TTF resides exclusively within the cyclophane s cavity...

M. A. Koupparis and A. Barcuchova, Automated Flow Injection Spectro-photometric Determination of Some Phenothiazines Using Iron Perchlorate Applications in Drug Assays, Content Uniformity and Dissolution Studies. Analyst, 111 (1986) 313. 

For the standard hydrogen electrode a - = 1 (by the convention expressed in Eq.(11.31)), while rearrangement of Eq.(11.30) for the half cell containing the iron perchlorates in cell (11.24) gives ... 

Similarly, in the case of composition where iron perchlorate lithium perchlorate sec-nitropropane methanol formamide = 15 30 30 15 10, detonation is possible at the same temperatures with detonation velocity of 6,250 m/s (p = 1.56 g/cm ) at 20 °C and a freezing point of —19 °C. When cations in perchlorates such as Ba, Li, Fe, or Sr become high in concentration, the explosives exhibit high sensitivity and explosion performance. Likewise, when the concentration is low, poor sensitivity and performance would be observed. The best content is 20-70 %, although it allows a large range of 10-80 % for optimization. This explosive tolerates some water for better explosion parameters. However, excess water would dissolve component materials bar nitroalkane so that nitroalkane precipitate from the oxidizer solution and the explosibility is disabled. This principle is utilized in the destruction of such explosives. 

Example 13 Polymerization of Pyrrole Derivatives by Iron Perchlorate in Organic Solvent (Adapted from ref. 58)... 

Cl 4H3 2Cl2Ni,Oi,Zn, Chloro( 1, 4,8,11-tetramethyl-1, 4,8,11-tetraazacyclo-tetradecane)zinc(II) perchlorate, 44B, 930 Cl H3 2NgNiOS2, Isothiocyanato(tris(2-dimethylaminoethyl)amine)nic-kel(II) thiocyanate monohydrate, 39B, 739 Cl4H33Cl2FeN50i0 C2H3N, Hydroxyl-nitrosyl-(1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane)iron perchlorate acetonitrile solvate, 45B, 1172... 

C20H3 2ASaCl2FeN09, Nitrosylbis(O-phenylenebis(dimethylarsine))iron perchlorate, 43B, 1433... 

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