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See also:TETRASTYLE (Gr. ehpa-, four, and See also:ari)aos, a See also:column) , the See also:term in See also:architecture given to a See also:portico of four columns which forms the See also:main front of a See also:temple (q.v.) . N: C . Billow (Ber., 1906, 39, pp . 2618, 4106), however, showed this substance to be an N-ammotriazole, which necessitates the first decomposition product being an See also:acid (I.), the See also:conversion into the (I.) H02C•C•NH•NH H02C•C—N•See also:NH2 N•N: C•See also:CO2H (II') N :NC CO2H triazole derivative (II.) being due to the See also:ring opening on the addition of the elements of See also:water and then closing again to the five-membered ring with elimination of water again . The decompositions of diazoacetic ester were then again examined by T . See also:Curtius and his students (Ber., 1907, 40, pp . 262, 350, 450, &c.), who showed that both triazole and tetrazine derivatives could be obtained from the bisdiazo-acetic acid which is formed by the See also:action of See also:alkali on diazo-acetic ester . |
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