Detail of "1851-22-5"

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Supplier:AOPHARM [ China (Mainland)]

Verified-Platinum Supplier 1st Year Platinum
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Tel:0086-311-66600578

Address:C-2103 Wonder Mall Business Square, 15 Yuhua West Rd., Shijiazhuang 050000, Hebei, China

Supplier:Toroma Organics Ltd. [ Germany]

600 Integral
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Tel:+49(0)681 / 9592852

Address:66123 Saarbruecken

600 Integral
600

Tel:021-36030322

Address:Room822, No.3, Wu Zhong Road, Shanghai, China

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Kinetics and mechanism of the chromium(II) reduction of pyridine N-oxides: Kinetics and mechanism of the chromium(II) reduction of pyridine N-oxides. Zipp, Arden P.; Ragsdale, Ronald O. (Dep. Chem., Univ. Utah, Salt Lake City, Utah, USA). J. Chem. Soc., Dalton Trans., (23), 2452-5 (English) 1976. CODEN: JCDTBI. 14906-64-0 and 1851-22-5 which are cas registry numbers are also used here. DOCUMENT TYPE: Journal CA Section: 67 (Catalysis and Reaction Kinetics) The kinetics of redn. of 15 substituted pyridine N-oxides by Cr(II) were studied in 1 mol/dm3 HClO4. The reactions proceeded by the stepwise redn. of pyridine N-oxide mols. via a free-radical path. Compds. with coordinating substituents in the ortho or para positon reacted faster (k >0.3 dm3/mol/s) than the others (k <2 .times. 10-3 dm3/mol/s). These substituent effects were discussed in terms of the ability of the pyridine N-oxides to coordinate to Cr(II) through groups other than the N-oxide, and the relative stabilities of the free-radical intermediates. .