A method for functionalization of an aromatic amino acid or a nucleobase with a fluoroalkyl-containing moiety RF, wherein the aromatic amino acid is reacted in the presence of at least one reductant with at least one hypervalent iodine fluoroalkyl reagent carrying the floroalkyl-containing moiety RF is disclosed. Novel hypervalent iodine fluoroalkyl reagents is also disclosed.

A method for functionalization of an aromatic amino acid or a nucleobase with a fluoroalkyl-containing moiety RF, wherein the aromatic amino acid is reacted in the presence of at least one reductant with at least one hypervalent iodine fluoroalkyl reagent carrying the floroalkyl-containing moiety RF is disclosed. Novel hypervalent iodine fluoroalkyl reagents is also disclosed.

Electrolytes and electrolyte additives for energy storage devices are disclosed. The energy storage device comprises a first electrode and a second electrode, where one or both of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, an electrolyte, and at least one electrolyte additive compound selected from a carbonate, oxalate, trioxidane, peroxide, peroxoate, dioxetanone, oxepane dione, oxetane dione, anhydride, oxalate or 1,4-dioxane-2,3-dione; each of which may be optionally substituted.

Electrolytes and electrolyte additives for energy storage devices are disclosed. The energy storage device comprises a first electrode and a second electrode, where one or both of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, an electrolyte, and at least one electrolyte additive compound selected from a carbonate, oxalate, trioxidane, peroxide, peroxoate, dioxetanone, oxepane dione, oxetane dione, anhydride, oxalate or 1,4-dioxane-2,3-dione; each of which may be optionally substituted.

Electrolytes and electrolyte additives for energy storage devices are disclosed. The energy storage device comprises a first electrode and a second electrode, where one or both of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, an electrolyte, and at least one electrolyte additive compound selected from a carbonate, oxalate, trioxidane, peroxide, peroxoate, dioxetanone, oxepane dione, oxetane dione, anhydride, oxalate or 1,4-dioxane-2,3-dione; each of which may be optionally substituted.

Electrolytes and electrolyte additives for energy storage devices are disclosed. The energy storage device comprises a first electrode and a second electrode, where one or both of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, an electrolyte, and at least one electrolyte additive compound selected from a carbonate, oxalate, trioxidane, peroxide, peroxoate, dioxetanone, oxepane dione, oxetane dione, anhydride, oxalate or 1,4-dioxane-2,3-dione; each of which may be optionally substituted.

Certain embodiments of the invention provide a lubricating oil composition comprising a lubricating oil base stock and a compound of formula (I): ##STR00001##
or a salt thereof, wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 have any of the values defined in the specification, as well as methods of use thereof.

Certain embodiments of the invention provide a lubricating oil composition comprising a lubricating oil base stock and a compound of formula (I): ##STR00001##
or a salt thereof, wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 have any of the values defined in the specification, as well as methods of use thereof.

The present invention relates to compounds of formula: ##STR00001##
and methods for linking tetrazines with dienophiles to establish at least two linkages by sequentially performing at least two cycloaddition reactions. The methods in particular allow establishing multi-labeling strategies. In particular, the invention relates to methods for forming linkages by cycloaddition reactions, wherein the method comprises reacting a first alkyl-substituted tetrazine with a first dienophile comprising a trans-cyclooctenyl group followed by reacting a second tetrazine with a second dienophile comprising a cyclooctynyl group, wherein the reaction of the first tetrazine with the first dienophile proceeds in the presence of the second dienophile.

A recoverable instant thickening acid and its reusing method is usable for the recycling and reusing of a gas well carbonate reservoir acidizing fluid and production stimulation operation. The recoverable instant thickening acid includes the following components in weight percentage: 1.5-3 parts of a thickener, 0.5-3 parts of potassium chloride and 100 parts of a hydrochloric acid solution, wherein the thickener is a mixture composed of a mass ratio of 40%-70% of N-lauryl-N-hydroxyethyl-N-hydroxypropyl ethylenediamine propionate or its derivatives, 4%-12% of ethanol and 18%-56% of water. With the thickening acid for performing an acidizing treatment, the residual acid solution can be re-prepared as a thickening acid for an acidizing treatment without a chemical treatment, assisting the green and environmentally friendly production and sustainable development of gas fields.