Sentence Examples


  • 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.
  • Is methyl-cyclo-hexadiene - i.
  • C02R CH 3 CH: CBr CO 2 R+NaCH (CO 2 R) 2 --->CH 3 C. I C(C02R)2 by the action of diazomethane or diazoacetic ester on the esters of unsaturated acids, the pyrazoline carboxylic esters so formed losing nitrogen when heated and yielding acids of the cyclo- propane series (E.
  • Cyclo-propane Group. Trimethylene, Calls, obtained by A.
 

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