121868-37-9Relevant academic research and scientific papers
Isotopic effect on tautomeric behavior of 5-(2,6-disubstituted-aryloxy)- tetrazoles
Noroozi Pesyan, Nader
body text, p. 592 - 599 (2012/01/17)
Isotopic effect on tautomeric behaviors of the synthesized 5-phenoxy- (1a), 5-(2,6-dimethylphenoxy)- (1b), 5-(2,6-diisopropylphenoxy)- (1c), 5-(2,6-dimethoxyphenoxy)- (1d) and 5-(4-methylphenoxy)-tetrazole (1e) were investigated in DMSO-d6 by adding one drop of D2O. Among 1a-e, 1a, 1d and 1e show small rotational barrier around C5-O1 and O1-C6 while in 1b and 1c there are distinguishable rotational barrier about that bonds. The 1H NMR spectra of 1b and 1c show slightly different chemical shifts for two methyl and isopropyl groups on those phenyl ring, respectively, while the chemical shifts difference (Δδ) between two methyl and two isopropyl groups were enhanced by adding D2O. The 13C NMR spectra of 1b show two overlapped singlets for methyl groups after adding D 2O. Representatively, the calculations of compound 1c were performed with GAUSSIAN-03and the rotational barrier about C5-O1 and between isopropyl group and phenyl ring in 1c was calculated with B3LYP/6-31G(d) basis set.
Functionalization of Olefins by Alkoximidoylnitrenes
Subbaraj, A.,Rao, O. Subba,Lwowski, Walter
, p. 3945 - 3952 (2007/10/02)
(N-Cyano- and N-(methylsulfonyl)alkoxycarbimidoyl)nitrenes, generated in situ from the corresponding azides by 300-nm UV-light, convert a variety of olefins cleanly and stereospecifically to the corresponding aziridines.These can readily be hydrolyzed to
