Facile H/D Exchange at (Hetero)Aromatic Hydrocarbons Catalyzed by a Stable Trans-Dihydride N-Heterocyclic Carbene (NHC) Iron Complex
作者:Subhash Garhwal、Alexander Kaushansky、Natalia Fridman、Linda J. W. Shimon、Graham de Ruiter
DOI:10.1021/jacs.0c07689
日期:2020.10.7
pincer complexes have played an important role in homogeneous catalysis during the last ten years. Yet, despite intense research efforts, the synthesis of iron PCcarbeneP pincer complexes has so far remained elusive. Here we report the synthesis of the first PCNHCP functionalized iron complex [(PCNHCP)FeCl2] (1) and the reactivity of the corresponding trans-dihydride iron(II) dinitrogencomplex [(PCNHCP)Fe(H)2N2)]
Nuclear spin-spin coupling between fluorine and hydrogen in fluorobenzene
作者:Børge Bak、J.N. Shoolery、George A. Williams
DOI:10.1016/0022-2852(58)90098-5
日期:1958.1
Abstract High resolution proton and fluorine nuclear magneticresonance (nmr) spectra of fluorobenzene, 4D-, 2,4,6-D 3− , and 2,3,5,6-D 4 -fluorobenzene have been obtained and analyzed. Double irradiation techniques were employed to eliminate the effects of the deuterium nuclear spin. The secular equation for 4D-fluorobenzene has been solved and the parameters adjusted for the best correspondence between
The present application describes deuterium-enriched escitalopram, pharmaceutically acceptable salt forms thereof, and methods of treating using the same.