CH3, known as " normal " or n-butane, substitution occurring at a terminal atom, or CH 3.
From n-butane we may derive, by a similar substitution of methyl groups, the two hydrocarbons: (I) CH 3 CH 2 CH 2 CH 2 CH 3, and (2) CH 3.
Nitroso-tertiary butane, (CH 3) 3 C NO, is formed when the corresponding hydroxylamine is oxidized by sulphuric monoper acid (E.
In the difference between C - C - C - C C-C-C and With this compound C 4 H 10, named butane, C isomerism is actually observed, being limited to a pair, whereas the former members ethane, C 2 H 6, and propane, C 3 H 8, showed no isomerism.
POLYMETHYLENES, in chemistry, cyclic compounds, the simplest members of which are saturated hydrocarbons of general formula C 7, H 2nj where n may be r to 9, and known as tri-, tetra-, penta-, hexa-, and hepta-methylene, &c., or cyclo- propane, -butane, -pentane, -hexane, -heptane, &c.: - CH 21 CH 2 CH 2 CH2.CH2 CH2 CH2 CH2?C1H,, I I H ?
Cyclo-propane, -butane, -pentane, -hexane.
Soc., 1888, 53, p. 1 94): C2H4Br2+2NaCH(C02R)2--->(CH 2) 2 C(CO 2 R) 2 +CH 2 (CO 2 R) 2; ethyl butane tetracarboxylate is also formed which may be converted into a tetramethylene carboxylic ester by the action of bromine on its disodium derivative (W.
Cyclo-butane Group. Cyclo-butane, C 4 H 8, was obtained by R.
It melts at 154-156° C., losing carbon dioxide and passing into cyclo-butane carboxylic acid, C 4 H 7 CO 2 H.
This basic acid yields a monobrom derivative which, by the action of aqueous potash, gives the corresponding hydroxycyclo-butane carboxylic acid, C 4 H 6 (OH) CO 2 H.
The a-acid is diphenyl-2.4-cyclo-butane dicarboxylic acid -1.3; and the /3-acid diphenyl-3.4-cyclo-butane dicarboxylic acid -1.2.
Riiber (Ber., 1902, 35, p. 2411; 1904, 37, P. 22 74), by oxidizing diphenyl-2.4-cyclo-butane-bismethylene malonic acid (fron cinnamic aldehyde and malonic acid in the presence of quinoline) with potassium permanganate.
These acids are obtained by the reduction of the hydrobromides of the diand tetra-hydroterephthalic acids or by the action of ethylene dibromide on disodio-butane tetracarboxylic acid.