Ethane, 1,2-Diamino

Ethan 1,2-Diamino-l, 2-di-2-thienyl-E16d. 1129 (Imin-Dimeris.), 1130 (R—CN rad. Dimerisier.)... 

Synonyms Cupriethylene diamine Cupriethylenediamine solution 1,2-Diaminoethane copper complex Ethane, 1,2-diamino-, copper complex Empirical C2H10N2 xCu Properties M.w. 506.92 Toxicology LD50 (oral, rat) 750 mg/kg, (skin, rabbit) > 8 g/kg corrosive poison irritating and corrosive to skin, eyes, and mucous membranes... 

Finally, Schiff base macrocycles incorporating telluroether functions are obtained by condensation of fe(2-formylphenyl)telluride with 1,2-diamino-ethane (analogues with Se incorporated have also been prepared).8,114... 

As discussed in Section 3.3.2, Corey demonstrated the utility of compound 55, prepared from 1,2-diphenyl-1,2-diamino ethane 54, as a chiral auxiliary for asymmetric aldol reaction. In a similar manner, his group utilized this compound 55 in both (R,R)- and (A,A)-forms for allylation reactions. Treatment of 55 with allyltributyltin in dry CH2CI2 at 0°C and then 23°C for 2 hours gives chiral allyl-borane 135. In this process, both the (R,R)- and (A,A)-forms can be obtained and applied in asymmetric allylation reactions. Thus, treatment of... 

A fritted polypropylene column is charged with Wang resin-bound l,3-diamino-2,2-dimethylpropane (note 1) (0.60 g, ca. 0.6 mmol), and the resin is swollen for lmin in 1,2-dichloro-ethane (7.0 mL note 2). The solvent is filtered off 1,2-di-chloroethane (5.2 mL), carbon disulfide (0.8 mL), and... 

A hydroxoaqua copper complex containing N, N, N, A -tetramethyl-1,2-diamino-ethane (250) is an excellent catalyst for the hydrolysis of sarin, O-isopropyl methylphosphonofluoridate (251), and diethyl p-nitrophenyl phosphate (252 R = Et). The mechanism of the reaction probably involves bound hydroxide attacking the phosphoryl group with concomitant electrophilic catalysis by copper. 

Poly(pyrido[3,4- ]pyrazine vinylene) 693 has been synthesized via condensation of 3,4-diamino-2,5-dibtomopyridine 691 with l,2-bis[3-(2 -ethylhexyloxy)phenyl]-ethane-l,2-dione 692 followed by coupling with l,2-bis(tri- -butyl-stannyl)ethylene in DMF at 110°C in the presence of tetrakis(triphenylphosphine)palladium. The vinylene polymer 693 showed improved stability toward photooxidation compared with similar polymers with purely aliphatic side chains and also had smaller band gaps (Equation 58) <2002SM(131)53>. 

Zur Reduktion von 3,4-Di-2-pyrimidyl-furazan-2-oxid mit Phosphor(III)-iodid/Iodwasserstoff zu 1,2-Diamino-1,2-di-2-pyrimidyl-ethan s. S. 667. 

Die selektive Reduktion von Nitrobenzol zu Azobenzol mit Natriumboranat gelingt in Gegenwart von 2 1-Polyamin-Kobalt-Komplexen. Als Polyamine werden 1,2-Diamino-ethan, Bis-[oc-amino-ethyl]-amin, l,2-Bis-[2-amino-ethylamino]-ethan und besonders wir-kungsvoll Bis-[2-(2-amino-ethylamino)-ethyl]-amin verwendet3. 

Die Umsetzung von 3-Pentanon mit Nitro-methan gelingt besser mit Diaminen als mit primaren und sekundaren Monoaminen als Katalysatoren. Die besten Umsetzungen ge-lingen mit l,2-Bis-[dimethylamino]-ethan (55%) bzw. mit 1,2-Diamino-ethan (83%)2 ... 

Nitromcthyl-2-penten2 860 mg (10 mmol) 3-Pentanon, 2,44 g (40 mmol) Nitro-methan, 1 -3 mmol Amin-Katalysator (Piporidin/Amino-eyclohexan/1,2-Bis-[dimethylamino]-ethan/l,2-Diamino-cthan) und 25 ml Benzol werden 21 h zum RtickfluB erhitzt. Es wird destillativ aufgearbeitet Sdp. 81 °/l 7 Torr (2,3 kPa) Ausbeute ... 

Mit dieser Methode lassen sich auf einfache Weise a,fi-ungesattigte Ketone bzw. Car-bonsaure-ester herstellen. Bei gleichzeitiger Anwesenheit einer Carbonyl- und einer Alk-oxycarbonyl-Gruppe wird mit Lithium in 1,2-Diamino-ethan die Carbonyl-Gruppe be-vorzugt eliminiert9 (s.Tab. 44, S. 380). 

In Gegenwart von Palladium-Schwarz reagiert Azetidin bei 120-170° mit der 3fachen molekularen Menge an 1,2-Diamino-ethan, 1,3-Diamino-propan oder Bis-[3-amino-pro-pyl]-amin unter Ringoffnung durch Umalkylierung (vgl. S. 1214f.) zu 1,4,8-Triaza-octan (70%), 1,5,9-Triaza-nonan (73%) bzw. 1,5,9,13-Tetraaza-tridecan (75%)1. 

Hydrated compounds of the type U02(H2L) xH20 have been reported for 1,2-diamino-propane-Af.NjA jAf -tetraacetic acid (x unspecified), tram diaminocyclohexane-N,N,N, N -tetraacetic acid (x = 0 or 3 (U02)2L-xH20, with x = 0 or 6 also known), 2,2 -diaminodiethyl ether-A, A,N, N -tetraacetic acid (x = 3), and 2,2 -diaminodiethyl sulfide-N,N,N, N -tetra-acetic acid (x = 0 or 4) the hydrates are predpitated from aqueous media, but in the last instance a mixture of ethanol and acetone was added to induce precipitation. The analogous di(2-aminoethoxy)ethane-/V, N,N, N -tetraacetic acid (H4L) forms the compounds... 

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