The Yields of Some Organolithium Compounds by the Improved Procedure

Abstract

Vol. 55 has a strong tendency to coordinate with unsaturated atoms (as in the amine oxides) the 1:1 complex of aluminum chloride and dimethylaniline should be stable in the presence of olefins and should not be a catalyst for the polymerization of the latter, and this was found to be the case. More striking yet, it was found that the introduction of trimethylamine vapor during adsorption runs on acetylene, ethylene and isobutylene stopped adsorption completely. Thus it seems clear that an activated olefin molecule may cause the rupture of a C-Cl coordinate link, or even of an Al-0 coordinate link, but is unable to break the much stronger A1=N link. Summary 1. A study has been made of the reaction of aluminum chloride with acetylene, ethylene and isobutylene.2. A study has been made of the action upon acetylene, ethylene and isobutylene of some organic complexes of aluminum chloride.3. A theory of polymerization based on the electronic structures of aluminum chloride and olefins has been advanced.

Radiosynthesis of a 2‐substituted 4,5‐dihydro‐1H‐[2‐11C] imidazole: the I2 imidazoline receptor ligand [11C] benazoline

“…Possibly the concentration we used was too low or the 2-naphthyllithium, which was reported to be particularly sensitive to the Wurtz-coupling, was lost, as was reported for the reaction of 2-bromonaphthalene and lithium metal that gave exclusively di-2-naphthyl. 7 Although formation of 2-naphthyllithium from n-butyllithium has been reported in the literature (e.g. ref.…”

Synthesis of Cyclopropanols from β‐Chloroethyl Cyclopropyl Ethers

“…Triethyl-, tri-n-propyl-, tri-isopropyl-, and tri-n-butyl phosphites react with N-phenylbenzimidoyl chloride or its pchloro, p-bromo, p-methoxy, and p-nitro derivatives at 0 Without exception, the phenyliminobenzylphosphonates ( I ) could be hydrolysed with dilute sulfuric acid a t 50 "C to give aniline and the corresponding benzoylphosphonates, which were isolated as their 2,4-dinitrophenylhydrazones (2).…”

“…49 "C from methanol. It has A, , , = 295 mp, log E = 4.05 in cyclohexane, and infrared absorptions at 695 (m), 805 (s), 1000 (m), 1230 (s), and 1490 (m) cm-1 121.The new compound readily absorbs 1 mole ofchlorine, being converted quantitatively into hexachlorotellurophene (3), bright yellow crystals, m. p. 200 "C. When a suspension of (3) using N M R methods [1,2]. The values obtained for p e~ were 4.5 B.M.…”

“…in benzene is shaken with aqueous sodium hydrogen sulfite, it is reconverted quantitatively into (2). In contrast to (2), the hexachloro derivative (3) is decomposed rapidly by aqueous alkali to 1,2,3,4-tetrachloro -1,3 -butadiene (4), tellurous acid, andalkali chloride.…”

“…In contrast to (2), the hexachloro derivative (3) is decomposed rapidly by aqueous alkali to 1,2,3,4-tetrachloro -1,3 -butadiene (4), tellurous acid, andalkali chloride. This ring cleavage…”