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A mild oxidation method of hydroxamic acids: efficient trapping of acyl nitroso intermediates

✍ Scribed by Seiji Iwasa; Kentaro Tajima; Shinji Tsushima; Hisao Nishiyama

Publisher
Elsevier Science
Year
2001
Tongue
French
Weight
51 KB
Volume
42
Category
Article
ISSN
0040-4039

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✦ Synopsis

Ru(II)(pybox-dh)(pydic) 2a-2e 1a; R=C 6 H 5 1b; R=p-CH 3 C 6 H 5 1c; R=p-ClC 6 H 5 CH 2 O 1d; R=CH 3 1e; R=t-BuO R O TETRAHEDRON LETTERS

πŸ“œ SIMILAR VOLUMES

Iridium(I)-catalyzed hydrogen peroxide o
Iridium(I)-catalyzed hydrogen peroxide oxidation of hydroxamic acids and hetero Diels–Alder reaction of the acyl nitroso intermediates with cyclopentadiene
✍ Seiji Iwasa; Ahmad Fakhruddin; Yasuyuki Tsukamoto; Masayuki Kameyama; Hisao Nish πŸ“‚ Article πŸ“… 2002 πŸ› Elsevier Science 🌐 French βš– 68 KB

## Ir(I)(coe) 2 Cl] 2 (2 mol%)-catalyzed hydrogen peroxide oxidation of hydroxamic acids in the presence of cyclopentadiene gave the corresponding cycloadducts up to 97% yield. With a catalyst loading of 0.05 mol%, a maximum TON was attained to 740.