By boiling trichloroethylene with 1 mole % of benzoyl peroxide, a dimer of trichloroethylene, 1, 1, 3, 3, 4, 4-hexachloro-1-butene, was obtained in 62% conversion. 1, 2, 3, 4-Tetrachloronaphthalene and a compound of molecular formula C8H4Cl14, whose structure is presumably (CHCl2CCl2CHClCCl2-) 2, were isolated in small amounts from the reaction mixture. The former is thought to have resulted from successive addition of a phenyl radical produced from benzoyl peroxide to two molecules of trichloroethylene followed by intramolecular inter action of the odd electron of the radical thus formed with the benzene ring.The latter arises apparently from dimerization of the dimer radical CHCl2CCl2-CHClCC22·. The details of the reaction mechanism are discussed.
Many copolymerized polyamides have been synthesized by combinati on of dimethyl isocinchomeronate and several diamines and dicarboxylic acid esters, in which many of them showed suitable melting points and spinning property. For example, a polyamide from dimethyl isocinchomeron ate, tetramethylenediamine, and dimethyl adipate (4: 10: 6) gave a suitable polyamide product having high Young coefficient to answer the object of this experiment and the process has practical value from the standpoint of the raw materials. An increase of melting point of the copolymerized polyamide with the same copolymer components ratio was observed with an increase in the numbers of meth-ylene groups when a dibasic acid having an even number of methylene group was used and it was attributed to the complexity of factors to determine the melting point of copolymerized polyamide containing isocinchomeronic acid group.
Catalytic hydrogenation of ethylene glycol, propylene glycol and glycerin with Raney nickel in the presence of ammonia at 250 yielded corresponding piperazine derivatives. The yields from propylene glycol, ethylene glycol and glycerin were 76%, 30% and 22-30%, respectively, and there were no remarkable differences in yields between ethylene glycol and glycerin.
2-Methoxyfluorene in glacial acetic acid is nitrated and the products are separated into 2-methoxy-7-nitrofluorene (mp 218-9°C) and 2-methoxy-3-nitrofluorene (mp 190-1°C) with 54% and 9% yield, respectively. 2-Methoxy-7-aminofluorene (mp 189-90°C), 2-methoxy-3-aminofluorene (mp 203-4°C), and 2-methoxy-3-acetaminofluorene (mp 241-2°C) are also synthesized and ultraviolet absorption spectra of each of these compounds are estimated.