Topic
Norbornadiene
About: Norbornadiene is a research topic. Over the lifetime, 2389 publications have been published within this topic receiving 38603 citations.
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29 citations
TL;DR: The nature of substrate activation, and initial bond breaking/making steps, and the dependence of initial rate (k) with diene ligand is in the order COD > NBD > CHD; which corresponds well with the order of hardness of the respective Ag(I) complexes.
Abstract: Silver(I) complex [Ag(diene)2]+Y− (where diene = cyclooctadiene, norbornadiene, and 1,3-cyclohexadiene; Y− = PF6−, BF4−) efficiently catalyzes the arylation of N-tosylaziridines with arenes and heteroarenes under ambient condition to provide the corresponding β-aryl amine derivatives with excellent regioselectivity. To understand the nature of substrate activation, and initial bond breaking/making steps, the following studies were conducted with the help of in situ NMR (1H, 31P, 109Ag) and ESI-MS probe: (I) evaluation of Hammett reaction constant (ρ); (II) correlation of initial rate (k) versus cone angle (θ) of ligand L for reactions mediated by [Ag(COD)2]PF6/L (where L is a phosphine or a phosphite ligand); (III) identification of silver−arene intermediates in solution; and (IV) correlation of initial rate (k) with ΔHOMO−LUMO of [Ag(diene)2]PF6 obtained from preliminary DFT studies. Study I led to a ρ-value of −0.586, indicating that the extent of electrophilic perturbation is considerably less than a t...
29 citations
TL;DR: In this paper, the rotational spectra of six 13 C and D isotopomers of norbornadiene have been measured between 12 and 25 GHz and the Fourier transform technique has been instrumental in observing the weak transitions of the norbornadienes because of the small permanent electric dipole moment.
Abstract: The rotational spectra of six 13 C and D isotopomers of norbornadiene have been measured between 12 and 25 GHz. The Fourier transform technique has been instrumental in observing the weak transitions of the norbornadienes because of the small permanent electric dipole moment. By combining the results from a previous study of norbomadiene, the complete substitution structure has been determined from the rotational constants of the parent and six isotopic species
29 citations
TL;DR: In this article, two sulfur atoms of the different dithiolato ligands are added to one of the double bonds of NBD and the reactions of 1 with quadricyclane (Q) are 103-104 times faster than those with NBD.
29 citations
TL;DR: In this article, the reactivity of twenty amines towards RuCl 2 (diene) n has been studied and the structures of two different isomers have been determined crystallographically to elucidate the stereochemical arrangement of the ligands about the ruthenium atom.
28 citations