Ethyl phosphite

The pyridine ligand in some alkenyl cobalt(III) DMG complexes may be replaced by methyl or ethyl phosphite by addition of the phosphite to a solution of the (DMG)2 complex in ethanol. In a similar manner aniline may be displaced by (CH30)3P from [CH2=CHCo(DMG)2C6HjNH2] (129). 

Ethylphenyldichlorophosphine, 31, 89 Ethyl phenylpropiolate, 32, 75 Ethyl phosphite, 31, 111 Ethyl pyruvate, 31, 59 1,1 Eth vn ylene-6is-c yclohex ANOL, 32, 70... 

Internal nitrenes normally react at the adjacent position. Reduction of 2-(2-nitrophenyl)furan by ethyl phosphite yields furoindole derivatives in fair yield (34%) only, whereas much better results attend the pyrolysis of 2-(2-azidophenyl)furan.280 Furopyrazoles are obtained similarly.281 Azidofurans yield nitrenes that insert into adjacent CH links to form furo-pyrroles.282 Quite different results attend either the pyrolysis or the photolysis of azide 107a for the expected insertion into the side chain occurs giving the related indole but it is accompanied by the surprising replacement of furan oxygen by nitrogen producing 107b and similar products.283... 

Dibrom-tris-[2,2,2-trichlor-ethoxy]-phosphoran>0 Eine Ldsung von 1,0 g (6,3 mMol) Brom in 5 ml Dichlorme-than wird bei -60° zu einer Losung von 2,33 g (6,3 mMol) Tris-[2,2,2-trichlor-ethyl]-phosphit in 10 ml Dichlor-methan gegeben. Nach lstdgm. Riihren bei -60° wird auf 20° erwarmt und das ausgefallene Phosphoran abfil-triert Ausbeute 2.75 g (82,5%) Schmp. 89-91°. 

A method for converting 1,3-butadiene into polybutadiene having at least an 88.4% vinyl content using iron isooctanoate, triisobutylaluminum, and ethyl phosphite is described. The optimum weight ratio of reagents of aluminum/iron was 5 100 with a phosphite/iron ratio of 1 20, respectively. 

A reactor was charged with 84 ml of hexane and butadiene (10 g) and then treated sequentially with iron isooctanoate (0.0124 mmol), triisobutylaluminum (0.19 mmol), and ethyl phosphite (0.0295 mmol). The mixture was placed into a 50°C water bath and polymerized for 4 hours. Thereafter an aqueous alcohol solution containing 2,6-di(t-butyl)-4-cresol was added to precipitate the mbber sample. The material was dried, and the product was isolated. 

Calculated AG( — 50°Q values are in the range 38-6 to 43-7 kJ mol and rate constants in the range 11 x 10 to 4-9 x 10 s . Similar studies on other Ni(ii) complexes are reported (54,242,243,252). Co(ii) complexes with ethyl phosphite, phosphonite, and phosphinite ligands (L) may be high spin complexes of the type C0CI2L2 or low spin, 5-coordinate complexes of the type C0CI2L3. In organic solvents the equilibrium ... 

Ethylphenyldichlorophosphine, 31, 89 Ethyl (1-phenylethylidene)-cyanoacetate, 39, 25, 53 Ethyl N-phenylformimidate, 35, 65 Ethyl phenylpropiolate, 32, 75 Ethyl phosphite, 31, ill Ethyl pyruvate, 31,59 Ethyl stearate, 34, 13 N-Ethyl-m-toluidine, 38, 31 Ethyl vinyl ether, 37, 75 1-Ethynylcydohexanol, 35, 2 1,1 -Ethynylene-Wt-cyclohex anol, 32,70... 

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