114 " BIBLIOGRAPHY OF 



PERKIN, Jr., W. H., 1890. 



J. Chem. Soc. 57, 204-241. 

 a — a'-Diacetyladipic Ester. 



Sodacetoacetic ester and ethylene bromid react to form two products, 



QJJ CO CH2 



(i) acetyl-triraethylene-carboxylic ester, qq'^ij >C<l , and (2) 



«— a'-diacetyladipic ester, co^r^> CHCH^ CH^ CH <qo^r^ The 



latter compound is a thick colorless oil, rather difficultly separable 

 from impurities, which decomposes some when distilled yielding a 

 mixture of several compounds. It will give a diphenylhydrazin 

 derivative, 



CH3 C (N2 HCe N5) ^ ^^^^2^^^^^ -^ C(N3HC6H5)CH3, 



which melts at 145° and when heated higher gives bis-phenyl-methyl 

 methylene-pyrazolone, 



C6 H5 N NC6 H5 



N CO OC N . 



II I I II 



CH3 C-CHCH2 CHa CH-CCH3 



Many other reactions and derivatives of a — a'-diacetyladipic ester were 

 given. 



FEIST, FRANZ, 1890. 



Ann. Chem. 257, 253-297 ; Ber. 23, 463 (C). 

 Dehydracetic Acid. 



In this long article account is given of a study of dehydracetic acid 

 made in order to determine its constitutional formula and its relation to 

 its isomers. A large number of reactions are described and a great 

 many of its derivatives are produced and their constitution determined. 

 A figure is given representing the most important reactions and a table 



