摘要:
A composition for reducing a copper oxide layer to metallic copper so as to facilitate bonding a resin to the metallic copper is disclosed. The composition is an aqueous reducing solution containing a cyclic borane compound. Examples of such cyclic borane compounds include those having nitrogen or sulfur as a ring-forming member, such as morpholine borane, piperidine borane, pyridine borane, piperazine borane, 2,6-Iutidine borane, 4-methylmorpholine borane, and 1,4-oxathiane borane, and also N,N-diethylaniline borane.
摘要:
A complex comprises organoborane and polyoxyalkylenepolyamine. The complexes are useful in systems for initiating the polymerization of acrylic monomer, which systems further include an amine reactive compound. Polymerizable acrylic monomer compositions useful as adhesives can be prepared.
摘要:
In the preparation of dimethylamine-borane by reacting an alkali metal or alkaline earth metal borohydride with a dimethylammonium salt, the improvement which comprises effecting the reaction in a liquid mixture comprising dimethylamine as a solvent and an additional organic solvent.
摘要:
A method of synthesizing boron analogues of choline and choline related mrials is disclosed. The method comprises reacting N,N dimethylethanolamine with hydrogen chloride or an acid chloride to form an ester hydrochloride. The resulting aminoalcohol hydrochloride or ester hydrochloride is further reacted with tetraethyl NBH.sub.4.Also disclosed are pharamaceutically interesting compounds of acetylcholine.
摘要:
A single stage process is provided for the direct synthesis of mixed polyimino derivatives of aluminum and alkaline earth metals consisting of reacting aluminum, an amine, the alkaline earth metal or hydride or amide derivative thereof, in the presence of hydrogen, the reaction being promoted by an activator in either hydrocarbon or ether solvents.
摘要:
A prochiral or racemic substrate such as a prochiral ketone is converted into an optically active product through a process wherein said substrate is subjected to an asymmetric hydrogen transfer reaction by means of an optically active amino-alane or polyimino-alane represented by the formulaH.sub.2 AlNR.sub.1 R.sub.2, H Al(NR.sub.1 R.sub.2).sub.2 or (H AlNR).sub.nwherein R, R.sub.1 and R.sub.2 are alkyl, aryl or cycloalkyl radicals, n is an integer higher than 4, and which contains an Al -- N direct bond and an Al -- H bond per aluminum atom, and the third substituent bound to aluminum is halogen, --H, ##STR1## or --OR wherein R has the aforesaid meaning, and wherein the asymmetry center is constituted by a primary or secondary amine group containing an optically active alkyl radical.
摘要:
POLYMERIC MATERIALS TREATED WITH CARGED BORON-NITROGEN CONTAINING COMPOUNDS ARE PROVIDED, ALON WITH A METHOD FOR IMPARTIN IMPROVED PROPRTIES TO POLYMERIC MATERIALS BY TREATING THEM WITH CAGED BORON-NITROGEN CONTAINING COMPOUNDS. THE CAGED BORON-NITROGEN CONTAINING COMPOUNDS ARE INCORPORATED IN OR USED TO TREAT THE SURFACE OF POLYVINYL CHLORIDE, POLYETHYLENE, VINYL CHLORIDEVINYL ACETATE COPOLYMERS, POLYETHYLENE TEREPHTHALATE AND THE LIKE. EXAMPLES OF CAGED COMPOUNDS USED IN THIS INVENTION ARE 3,7,10-TRIMETHYL-2,8,9-TRIOXA-5-AZ-1-BORATRICYCLO (3.3.3.0) UNDECANE; 3 - HYDROXYMETHYL - 7,10-DIMETHYL-2,8,9-TRIOXA-5 - AZA - 1 - BORATRICYCLO (3.3.3.0) UNDECANE STEARATE; 4,4,7,10-TETRAMETHYL-2,8,9-TROXA-5AZA-1-BORATRICYCLO (3.3.3.0) UNDECANE.