210 PROCEEDINGS OF THE AMERICAN ACADEMY 



with chlorine. Immediately after the preparation of the pure chlor- 

 benzylchloride by Neuhof, many of its derivatives were studied by 

 Beilstein and Kuhlberg and Neuhof;* and the two former extended their 

 investigations to the chlorbenzyl compounds containing more than one 

 atom of chlorine attached to the benzole ring. Since that time, but 

 little attention has been given to this class of compounds ; the only 

 researches being those of Bohler,t and later, Vogt and Henninger,| on 

 the sulphoacids, of Berlin,§ who obtained some curious results from 

 the amines, and of Sintenis,|| who investigated the ethers. 



Beside these chlorbenzyl compounds, only two other classes of sub- 

 stances lying within the range of this paper have been studied, the 

 nitrobenzyl compounds, — the first of which, nitrobenzylchloride, was 

 described by Beilstein and Geitner in 1866, in the paper already 

 referred to ; IT its derivatives were further studied by Grimaux,** 

 Beilstein, and Kuhlberg.ff Bohler,t$ Strakosch,§§ Czumpelik.|||| 

 Radziszewski,1[ir Henry,*** and Jackson ; fff and a few amidobenzyl 

 compounds, the cyanide prepared by Czumpelik,||| and the amines by 

 Strakosch.§§§ 



All these substances belonged to the para series, and no isomeric 

 chlor- or nitrobenzyl compounds were known with the exception, 

 perhaps, of the monochlorbenzylsulphosalts described by Vogt and 

 Henninger, {|||{| and the isomeric nitrobenzylalcohol obtained by Gri- 



* Beilstein, KuhlLerg, Neuhof, Ann. Chera. Pliarm., 147, p. 339; ib., 150. 

 p. 280 ; ib., 146, p. 3iy. 



t Biihler, Zeitschr. Chem., 1868, p. 440. 



t Vogt, Henninger, Ann. Chim. Pliys. [4], 27, p. 130; Ann. Chem. Piiarm., 

 165, p. 362. 



§ Berlin, Ann. Chem. Pharm., 151, p. 137. 



II Sintenis, ib., 161, p. 329. 



TF Beilstein and Geitner, Ann. Chem. Pharm., 139, p. 331. 



** Grimaux, Comptes Rend., LXV., p. 211 ; Ann. Chem. Pharm., 145, p. 46. 



tt Beilstein, Kuhlberg, Neuhof, Ann. Chem. Pharm., 147, p. 339; ib., 150, 

 p. 286 ; ib., 146, p. 319. 



U Bohler, Zeitschr. Chem., 1868, p. 440. 



§§ Strakosch, Ber. D. Ch. G., 1872, p. 692. 

 nil Czumpelik, ib., 1870, p. 473. 



ITF Radziszewski, ib., 1870, p. 198. 



*** Henry, ib., 1869, p. 637. 



ttt Jackson, ib., 1875, p. 321. 



Jtt Ozumpelik, ib., 1870, p. 473. 



§§§ Strakosch, ib., 1872, p. 692. 



lijlll Vogt, Henninger, Ann. Chim. Phys. f4J,27, p. 130; Ann. Chem. Pharm., 

 165, p. 362. 



