α-Amino AcidsOxone®Oxidative decarboxylation of α-amino acids with acetonepotassium peroxymonosulfate (Oxone ®) is described. The reaction represents the first example of oxidative decarboxylation of an α-amino acid RCH(NH 2)COOH in which a product other than an aldehyde RCHO or a ...
As it is well known, following electron irradiation of amino acids deamination and decarboxylation takes place. For sulfur-containing amino acids, desulfurization also takes place [2]. We have accordingly decided to monitor the time behavior of the partial pressures associated with the following m/z...
Amino acidscopperdecarboxylationeliminationprimary aryl sulfonamidesA novel protocol for CuO-catalyzed decarboxylation/elimination of N-arylsulfonyl amino acids was developed. It is the first example of using an accessible amino acid as an ammonia synthetic equivalent for the synthesis of primary aryl ...
For one reason or another, it may be desirable to remove a carboxylic acid group (–COOH) from a molecule. This process is called, logically, decarboxylation. It may be the carboxylic group was previously introduced to guide some of steps in a synthesis. What? A Simple Example Consider the...
A practical, efficient, and operationally simple strategy for the ipsoiododecarboxylation and di-iodination of aromatic carboxylic acids using the low-cost commercial reagent succinimide (NIS) as iodine source is reported. This iodination or di-iodinatio
Because of their unique nucleophilic and then electrophilic reactivity, sulphur ylides are usually used as a versatile methylene synthon not only in synthetic laboratories2 but also in many bacteria3–5. For example, in the well-known Johnson– Corey–Chaykovsky reaction6, which was first discovered...
A value in this range is consistent with an amino acid–based radical that is not strongly exchange-coupled to the electronic spin of a nearby paramagnetic metal. Coupling would enhance the spin-lattice relaxation for the radical and raise P½. Values of P½ for compound I, for example,...
Molten salt electrolytes are described for use in electrochemical synthesis of hydrocarbons from carboxylic acids. The molten salt electrolyte can be used to synthesize a wide variety of hydrocarbons
of decarboylxative rearrangement to give the alkyl pyridyl sulfides; quinones and cyclic anhydrides serve this function well. For example, Theodorakis et al. demonstrated the addition reaction of alkyl radical generated from a Barton ester to a 1,4-quinone (Scheme 11). After addition of the ...
2. A process according to claim 1 wherein the extraction is conducted in the presence of an ion-pairing reagent belonging to the group consisting of lipophilic carboxylic acids, phosphoric acids, phosphinic acids, sulfonic acids or their salts. ...