Hydroxylamine as an oxygen nucleophile: substitution of sulfonamide by a hydroxyl group in benzothiazole-2-sulfonamides
作者:Jos J. A. G. Kamps、Roman Belle、Jasmin Mecinović
DOI:10.1039/c2ob26929e
日期:——
the corresponding amine. Mechanistic studies that employ a combination of structure–reactivity relationships, oxygen labeling experiments, and (in)direct detection of intermediates and products reveal that the reaction proceeds via oxygen attack, and that oxygen incorporated in the 2-hydroxybenzothiazole product derivesfrom hydroxylamine. The reaction, which is performed under mild conditions, can be
Synthesis of some disubstituted 1,2,4-oxadiazoles and furazans
作者:B. W. Nash、R. A. Newberry、R. Pickles、W. K. Warburton
DOI:10.1039/j39690002794
日期:——
No Beckmann rearrangement occurs when ω-chlorophenylglyoxime is treated with phosphorus pentachloride, and the steam-volatile product is 3-chloro-4-phenylfurazan (II; R = Cl), not, as previously reported, 3-chloro-5-phenyl-1,2,4-oxadiazole (I; R = Cl).
当用五氯化磷处理ω-氯苯基乙二肟时,不会发生贝克曼重排,并且蒸汽挥发产物为3-氯-4-苯基呋喃山(II; R = Cl),而不是以前报道的3-氯-5-苯基- 1,2,4-恶二唑(I; R = Cl)。
A Facile Synthesis of 1,2,4-Oxadiazolidin-3-ones via Tandem <i>O,N</i>-Addition of Hydroxyureas to Methyl Propiolate
作者:Kyukwan Zong
DOI:10.1055/s-1998-1936
日期:1998.11
BENNOUNA, CHAKIB;PETRUS, F.;VERDUCCI, J.;HAUW, C.;GAULTIER, J., CAN. J. CHEM., 1981, 59, N 19, 2891-2897
作者:BENNOUNA, CHAKIB、PETRUS, F.、VERDUCCI, J.、HAUW, C.、GAULTIER, J.