The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 5704-04-1, Name is 2-((1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl)amino)acetic acid, SMILES is O=C(O)CNC(CO)(CO)CO, in an article , author is Tang, Rui, once mentioned of 5704-04-1, Quality Control of 2-((1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl)amino)acetic acid.
A Xanthene-Based Mono-Anionic PON Ligand: Exploiting a Bulky, Electronically Unsymmetrical Donor in Main Group Chemistry
The synthesis of a novel mono-anionic phosphino-amide ligand based on a xanthene backbone is reported, togetherr with the corresponding Ga-I complex, (PON)Ga (PON = 4-(di(2,4,6-trimethylphenyl)phosphino)-5-(2,6-diisopropylanilido)-2,7-di-tert-butyl-9,9-dimethylxanthene). The solid-state structure of (PON)Ga (obtained from X-ray crystallography) reveals very weak O…Ga and P…Ga interactions, consistent with a R2NGa fragment which closely resembles those found in one-coordinate amidogallium systems. Strong N-to-Ga pi donation from the amido substituent is reflected in a very short N-Ga distance (1.961(2) angstrom), while the P…Ga contact (3.076(1) angstrom) is well outside the sum of the respective covalent radii. While the donor properties of the PON ligand towards Ga-I are highly unsymmetrical, oxidation to Ga-III leads to much stronger coordination of the pendant phosphine as shown by P-Ga distances which are up to 20 % shorter. From a steric perspective, the PON ligand is shown to be significantly bulkier than related beta-diketiminate systems, a finding consistent with reactions of (PON)Ga towards O-atom sources that proceed without oligomerization. Despite this, the enhanced P-donor properties brought about by oxidation at gallium are not sufficient to quench the reactivity of the highly polar Ga-O unit. Instead, intramolecular benzylic C-H activation is observed across the Ga-O bond of a transient gallanone intermediate.
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